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Background: Following the successful completion of feasibility and acceptability studies of internet-delivered self-help Acceptance and Commitment Therapy for family carers of people with dementia (iACT4CARERS), a full-scale randomised controlled trial (RCT) evaluating its clinical and cost effectiveness will be conducted. This paper describes the design and protocol for a multi-site, parallel, single-blind, 2-arm RCT evaluating the clinical and cost effectiveness of iACT4CARERS plus treatment-as-usual (TAU) in comparison to TAU alone for reducing anxiety in family carers of people with dementia., Methods: 496 family carers aged ≥18 years, who are caring for a person with dementia, will be recruited from national healthcare services, general practices and community groups in England. Participants randomised to the intervention arm will receive iACT4CARERS over 12 weeks. Participants will complete outcome measures at baseline (0 weeks) and at 12-weeks and 24-weeks post-randomisation. The primary outcome and timepoint will be anxiety at 12 weeks. Secondary outcomes will include psychological flexibility, depression, and cost-effectiveness (cost per quality adjusted life years). Primary analyses will be by intention-to-treat and data will be analysed using linear mixed models. Fidelity and quality of implementation will be assessed and contextual factors associated with variation in outcomes identified in a process evaluation., Conclusion: If iACT4CARERS is found to be effective and affordable, this self-help intervention, including minimal contact with minimally trained therapists, has the potential to be rolled out widely within healthcare services in the UK, reducing inequality in access to psychological services among this population., Clinical Trials Registration: ISRCTN registry identifier ISRCTN45995725., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Background: Diabetes distress (DD) is a prevalent concern among people with type 1 diabetes (T1D) and is linked to poor clinical outcomes. Instead of targeting the elimination of DD, we propose a novel approach that empowers individuals with strategies to manage their diabetes effectively in the context of DD: Acceptance and Commitment Therapy (ACT). The purpose of this in-progress trial is to compare an ACT group intervention (ACT1VATE) with usual care in improving HbA1c, DD, quality of life, and cost-effectiveness in adults with T1D., Methods: This is a two-arm, parallel group, randomized controlled superiority trial enrolling N = 250 adults with T1D, elevated HbA1c, and significant DD in a real-world community-based health system. Participants are randomized to receive ACT1VATE (a five-week ACT group telehealth intervention) or diabetes self-management education and support (usual care as the first-line recommended intervention for DD). The trial will examine comparative effectiveness in improving HbA1c, DD, quality of life, and cost-effectiveness over 12 months., Discussion: We predict that ACT1VATE will be superior given its (1) specific focus on DD, without any expectation that difficult diabetes-related thoughts and emotions must (or can) be completely eliminated; and (2) purposeful linkage of diabetes self-care behaviors to an individual's deeply held values, thus eliciting intrinsic, patient-centric motivation for meaningful and lasting health behavior changes. This trial will provide a valuable test of real-world effectiveness, drive sustainability and scalability, and inform the future of chronic disease care., Trial Registration: NCT04933851 (https://clinicaltrials.gov/ct2/show/NCT04933851)., Clinical Trial: Clinicaltrials.govNCT04933851https://clinicaltrials.gov/study/NCT04933851., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Objective: While there is sufficient evidence of Acceptance and Commitment Therapy's effectiveness in allowing patients to deal with chronic pain, the effectiveness in cognitive fusion, one of the six core components of the Psychology Flexibility Model, has yet to be established. The aim of this article is to assess whether psychological interventions decrease cognitive fusion., Methods: The Web of Science, SCOPUS, Medline, and PsycINFO databases were searched for primary studies up to June 2024. Studies with a cognitive fusion measure in which chronic pain patients received a psychological intervention were included. A methodological quality scale was applied to the selected studies and the average effect sizes (Hedges g) were calculated., Results: This review included 18 articles with 24 studies (19 pre-post/follow-up studies and five randomized control trials). Cognitive fusion decreased significantly after the intervention. The effect sizes were small/medium at post-test, g = -0.39, p < .001, 95% CI [-0.52, -0.26]; and medium at long-term follow-up, g = -0.55, p < .001, 95% CI [-0.74, -0.36]. A similar tendency was found for studies with RCTs at post-test, g = -0.61, p = .006, 95% CI [-1.05, -0.17], short-term follow-up, g = -0.79, p < .001, 95% CI [-1.18, -0.40] and long-term follow-up, g = -0.58, p = .003, 95% CI [-0.95, -0.20]). Moderator variables such as unemployment, gender, pain intensity, level of depression before the intervention, and duration and intervention modality were identified., Conclusion: Psychological interventions tended to decrease cognitive fusion in chronic pain patients. Nonetheless, more clinical trials are needed to establish the role of cognitive fusion in psychological flexibility., Competing Interests: Declaration of competing interest The authors have no competing interests to report., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Given the prevalence of depression, it is worthwhile to consider a variety of treatment approaches to reach as many sufferers as possible, including highly accessible formats such as self-help books. Books based in acceptance and commitment therapy (ACT) and cognitive behavioral therapy (CBT) propose to treat depression through distinct processes of change, though the degree to which these treatments are distinguishable in this format is unclear. Furthermore, it is possible that some individuals may respond better to therapeutic processes from one approach over the other based on personal preferences. We tested the effects of ACT and CBT self-help books on processes of change in a sample of 139 depressed college students in which some participants were given a choice of treatment and others were randomized. Cognitive fusion, which improved better in the ACT group, was the only process of change that distinguished the two treatments. Additionally, early improvements in cognitive fusion were associated with less depression-related stigma at posttreatment. Lastly, randomization, instead of choosing a treatment, led to greater improvements in almost all processes of change. We discuss how these findings inform personalized care, tangible differences between ACT and CBT, and effective practices for treating depression at large scale.

Background: Reintegration and adjustment to civilian life after military service is crucial for veterans' mental and physical health. However, there is a lack of evidence-based interventions in Australia that specifically address the psychological and cultural factors associated with improved adjustment and mental health in this group. The aim of this study was to evaluate the feasibility, acceptability, and initial outcomes of a novel group intervention program, developed to address this gap in supports and services for Australian veterans., Methods: A non-controlled, within-subjects longitudinal design was employed with a feasibility framework including assessment of demand, implementation, integration, experience, perceived effectiveness, and burden or discomfort. The program included eight weekly 2.5-hour group sessions using cognitive-behavioural and acceptance and commitment therapy techniques. Participants included 24 transitioned veterans who completed the Military-Civilian Adjustment and Reintegration Measure, Quality of Life Enjoyment and Satisfaction Questionnaire-Short Form, Depression Anxiety Stress Scale-21, and PTSD Checklist for DSM-5 at pre-intervention, post-intervention, and three-month follow-up., Results: High participant ratings of engagement, experience and usefulness of the program were found, as well as perceived improvement in adjustment to civilian life as a result of the program. Sound program retention (82.8%), completion (87.5%), and manual adherence rates (89.6%) were also found. Significant improvements were found in adjustment and reintegration scores from pre-intervention to post-intervention (p = < 0.001) and from pre-intervention to follow-up (p = < 0.05), with large effect size (η p 2  = 0.344). All participants who completed the program reported they would recommend the program to another veteran., Conclusion: This study demonstrated the feasibility and acceptability of a novel group intervention program designed for military veterans in Australia. The program showed promising initial evidence of effectiveness in improving adjustment and reintegration to civilian life and provides an essential first step towards addressing a substantial gap in services for veterans struggling to adjust to civilian life. A randomised controlled trial may be an appropriate next step., Anzctr Registration Number: ACTRN12622000172707., Date of Registration: 02/02/2022., Type of Registration: Retrospectively registered., (© 2024. The Author(s).)

Background: Working in accident management centers and medical emergencies makes employees face psychological tensions and leads to a decrease in their work quality and endangering the lives of patients. Therefore, any solution to reduce their tension will be valuable. This study was conducted to investigate the effect of acceptance and commitment-based therapy (ACT) on work-related rumination and job fatigue among the employees of the Emergency and Medical Accident Management Center of Alborz Province, Iran., Methods: This study is an experimental research with intervention and control groups conducted between January 16, 2019, and July 8, 2019. Sixty-four employees were selected based on the entry criteria and randomly assigned to two groups. People in the intervention group participated in 8 sessions of 2-hour therapy based on acceptance and commitment. Questionnaires for demographic information, work-related rumination, and occupational recovery/exhaustion were used to collect data. The intervention was conducted with univariate and multivariate covariance analysis., Results: The findings showed that the average job fatigue reached 16.78[Formula: see text] 11.44 from 37.06 ± 16.70 in the pre-test with a decrease of 20.28 points. Also, the average of all rumination dimensions related to work decreased in the post-test. The findings showed that the effectiveness of treatment based on acceptance and commitment therapy was confirmed on job fatigue and all its components and all dimensions of work-related rumination (p < 0.05). The partial eta square index was greater than 0.14 in all cases and showed the significant effectiveness of the intervention on all components of work-related rumination and job fatigue., Conclusion: Treatment based on acceptance and commitment reduced rumination and job fatigue. It is recommended to practice this intervention to improve personnel's mental health and the quality of services provided to patients., Clinical Trial Number: Not applicable., (© 2024. The Author(s).)

Introduction: Tinnitus is a common ailment that affects 10%-15% of adults worldwide. Comorbidities associated with tinnitus often include hearing loss, emotional distress and sleep disorders, with insomnia being a common issue among patients with tinnitus. Audiological and psychological approaches are typically used to treat chronic subjective tinnitus, with the combination of sound therapy and cognitive-behavioural therapy-based counselling having the strongest evidence for effectiveness. Acceptance and commitment therapy (ACT) has also shown promising effects in reducing the impact of tinnitus when delivered in groups or online. However, there is a lack of evidence on the effects of combining ACT with sound therapy for patients with tinnitus-related insomnia. Therefore, this study aims to compare the efficacy of internet-delivered ACT combined with sound therapy versus sound therapy alone for tinnitus in a superiority, two-arm randomised controlled trial., Methods and Analysis: A total of 164 patients with chronic subjective tinnitus and insomnia will be randomised to receive internet-delivered guided self-help tinnitus treatment based on ACT combined with tailored sound therapy or tailored sound therapy alone. The primary outcome is the variation in Tinnitus Handicap Inventory scores observed 2 months after randomisation between the two study groups. Secondary outcomes will include insomnia severity, sleep parameters, tinnitus loudness, tinnitus acceptance, depression and anxiety. The outcomes will be assessed at 2, 3 and 6 months post randomisation., Ethics and Dissemination: The study is approved by the review board and ethics committee of the Eye and ENT Hospital of Fudan University (approval number: 2023066-1). The findings will be disseminated through presentations at relevant conferences and peer-reviewed publications., Trial Registration Number: NCT05963542., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Despite recent calls for more peer support initiatives aimed at promoting mental health in postsecondary institutions, those initiatives remain scarce. In this study, a multisite randomized controlled trial was designed to assess the effect of an online peer support intervention based on acceptance and commitment therapy using mental health and school indicators. Undergraduate students were recruited in three Canadian universities and randomly assigned to an intervention ( n  = 54) or a wait-list control group ( n  = 53). Compared to control participants, those who took part in the program self-reported reduced psychological inflexibility, stress, anxiety and depression, and increased psychological flexibility and well-being. The intervention had no effect on academic satisfaction and engagement. These results were found both in completer and intent-to-treat samples. The findings provide evidence that peer support may be a beneficial adjunct to mental health interventions offered to college and university students.

This article proposes a multicomponent hypnotherapeutic approach for obsessive-compulsive disorder (OCD) treatment. This new approach combines hypnosis with exposure and response prevention, cognitive reappraisal, principles of acceptance and commitment therapy, and other components. In the presented case study, the patient was treated for four months with both biological and psychological first-line therapy with minor effects; the patient was then treated with hypnotherapy. The patient listened to a recorded hypnosis session, which was constructed according to the new proposed principle. After three weeks of near-daily listening to the session, the patient's Yale-Brown Obsessive-Compulsive Scale score decreased by 38.5%, which helped achieve a 51.5% reduction from the initial score, suggesting that this method might have significantly contributed to the therapeutic outcome. In addition, this article discusses the differences between the proposed approach and previously published hypnotherapeutic methods for OCD treatment and the hypothetical use of such an approach for other disorders characterized by compulsive behavior. Further randomized controlled studies are needed to confirm the efficacy of hypnotic approaches for treating OCD.

Abstract: The participation of military personnel in operations like the Anti-Terrorist Operation (ATO)/Joint Forces Operations (JFO) can lead to significant psychological trauma, potentially resulting in posttraumatic stress disorder (PTSD). Understanding the effectiveness of psychotherapy in treating PTSD among ATO/JFO participants is crucial given its profound impact on personal relationships, life scenarios, and overall well-being. This study evaluates how acceptance and commitment therapy can alleviate PTSD symptoms and enhance well-being in Ukrainian military personnel with combat-related PTSD. The main research method was a psychological experiment, and the case study method was used as an auxiliary research method. The study revealed the following: combatants in the ATO/JFO who have been diagnosed with PTSD should be classified as persons with disabilities due to certain limitations in their life activities, namely, the inability to control their behavior, and difficulties in work and communication. This study proves that cognitive-behavioral psychotherapy has a clear advantage in overcoming PTSD in the military, as it allows transforming psychological trauma into posttraumatic growth. Attachment and acceptance therapy, a form of behavioral therapy, has emerged as one of the most effective treatments for PTSD. It focuses on diagnosing and addressing the psychological consequences of war by analyzing the connections among cognition, affect, and behavior. Given the protracted nature of PTSD, the practical significance of the study is to develop effective psychotherapeutic interventions for the expected recovery of ATO/JFO participants affected by combat operations., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Misophonia is a disorder characterized by an intense emotional reaction to specific sounds, often leading to significant distress and impairment in daily functioning. Acceptance and commitment therapy (ACT) is a promising psychotherapy for treating misophonia, but has only been previously tested in case studies. This paper presents a protocol for the first randomized controlled trial (RCT) assessing the efficacy and feasibility of ACT supplemented by audiological interventions for misophonia versus progressive relaxation training (PRT)., Methods: The outlined protocol is a RCT with 60 adults with misophonia. After undergoing a comprehensive psychological and audiological evaluation, participants were randomly assigned to ACT (n = 30) or PRT (n = 30). All participants completed clinician-administered and self-report assessments at baseline, post-intervention, 3-month follow-up, and 6-month follow-up. The primary outcome was misophonia severity and impairment measured via clinical interview. Secondary outcomes included disgust, anger, sensory sensitivities, well-being, distress, and psychological flexibility., Discussion: This paper outlines the rationale of using ACT supplemented by audiological methods for misophonia with the novel therapeutic target of enhancing psychological flexibility. The results of this randomized controlled trial will help determine if ACT is an efficacious and acceptable treatment for misophonia. This trial will also help clarify active psychological mechanisms of misophonia, and assess whether this combination of psychological and audiological services can effectively help individuals with misophonia., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Inc.)

Background: Regarding the prevalence and pervasiveness of psychiatric disorders, which significantly affect not only the patients themselves, but also their families, family therapy has emerged as a promising intervention. This research examined the effects of Acceptance and Commitment Therapy (ACT) on stigma and family functioning in family members of patients with psychiatric illnesses, demonstrating effectiveness in improving family functioning and coping strategies in the face of mental illness., Methods: This randomized controlled clinical trial without blinding. Forty family members of patients with psychiatric disorders were randomly assigned to an intervention group (N = 20) or a control group (N = 20). The intervention group received ACT in eight weekly sessions, each lasting 90 min, while control group remained on a waiting list. Both groups were assessed at three time points: pre-intervention, post-intervention, and at a one-month follow-up. Data collection instruments included a demographic information questionnaire, a stigma assessment, and a family functioning measure. Data were analyzed using SPSS software version 23., Results: A statistically significant difference was observed between the mean post-test and follow-up stigma scores of the intervention and control groups (P < 0.05). The intervention group's mean scores showed a rising trend, whereas the control group's mean scores showed a declining trend. This was evident from within-group comparisons of the mean post-test and follow-up stigma scores. Repeated measures ANOVA indicated that the pattern of change in stigma for the intervention group was significant, in contrast to control group, suggesting a reduction in stigma (P < 0.001)., Conclusion: In light of the findings presented in this study, ACT emerges as a promising intervention for mitigating stigma, and enhancing the family functioning of individuals afflicted with mental disorders. To improve the generalizability of the study results, comparable studies using this therapy method should be undertaken on family caregivers of patients with mental illnesses., Iranian Registry of Clinical Trials: IRCT registration number: IRCT20190917044802N10., Registration Date: 14/9/2023., (© 2024. The Author(s).)

We updated systematic reviews for mindfulness and acceptance and commitment therapy for problematic alcohol use and disorders. We found growing evidence mindfulness was associated with reduced alcohol consumption and/or other therapeutic effects and was superior to other treatments under certain conditions. Mindfulness may be valuable for treating comorbidity and offer an alternative to traditional psychosocial interventions., (© The Author(s) 2024. Medical Council on Alcohol and Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Introduction: The head and neck comprise vital organs and are apparent human body parts. Tumours here impair physical and sensory functions as well as appearance and social interactions, leading to body image distress (BID) and threatening mental health and quality of life. Acceptance and commitment therapy has shown effectiveness in improving BID in groups such as breast cancer patients. This study aims to apply this therapy to intervene in head and neck cancer (HNC) patients, aiming to improve BID and promote better psychological well-being., Methods and Analysis: This study is a prospective, parallel-group, randomised controlled trial. A total of 64 HNC patients will be allocated to either an intervention group or a control group. The intervention group will engage in a 3 week, six-session group-based acceptance and commitment therapy programme, while the control group will receive standard treatment. The primary outcome is cancer-related BID, and secondary outcomes are HNC-related BID, psychological flexibility, coping style and psychological distress. These indicators will be measured at baseline, postintervention and 1 month following the intervention's completion., Ethics and Dissemination: The trial has received approval from the Institutional Review Board of Shanghai Proton and Heavy Ion Hospital (2308-67-02). The study results will be shared through peer-reviewed journals and conferences., Trial Registration Number: ChiCTR2300077863., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Misophonia is characterized by decreased tolerance to idiosyncratic and repetitive human-generated sounds (ie, triggers), coupled with affective-based reactions that result in impairment and distress. Often having its onset in youth, misophonia can become especially prominent during key developmental periods, including emerging adulthood. While efforts to develop interventions for misophonia remain ongoing, a consensus has not yet been reached concerning recommended first-line treatments. Acceptance and commitment therapy (ACT), which has demonstrated efficacy in treating various psychiatric disorders via targeting psychological flexibility processes, represents one potentially feasible approach for addressing misophonia. This case study describes the application of an individually delivered, 12-session ACT intervention for a black female in her early 20s with misophonia. Descriptive data collected at 4 time points (pretreatment, mid-treatment, posttreatment, and at 2-month follow-up) suggested the potential promise of ACT as a treatment for misophonia, improving psychological flexibility processes and reducing secondary depression and anxiety symptoms. Findings are discussed in the context of the possible mechanisms of ACT most likely responsible for misophonia-related clinical improvement. More rigorous studies (eg, clinical trials) are needed to confirm promising findings from existing case studies., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Personal recovery is a persisting concern for people with psychotic disorders. Accordingly, mental health services have adopted frameworks of personal recovery, prioritizing adaptation to psychosis alongside symptom remission. Group acceptance and commitment therapy (ACT) for psychosis aims to promote personal recovery alongside improved mood and quality of life., Aims: The objectives of this uncontrolled, prospective pilot study were to determine whether 'Recovery ACT' groups for adults are a feasible, acceptable and safe program within public mental health services, and assess effectiveness through measuring changes in personal recovery, wellbeing, and psychological flexibility., Method: Program feasibility, acceptability and safety indicators were collected from referred consumers ( n =105). Adults ( n =80) diagnosed with psychotic disorders participated in an evaluation of 'Recovery ACT' groups in Australian community public mental health services. Participants completed pre- and post-group measures assessing personal recovery, wellbeing, and psychological flexibility., Results: Of 101 group enrollees, 78.2% attended at least one group session ( n =79); 73.8% attended three or more, suggesting feasibility. Eighty of 91 first-time attendees participated in the evaluation. Based on completer analyses ( n =39), participants' personal recovery and wellbeing increased post-group. Outcome changes correlated with the linear combination of psychological flexibility measures., Conclusions: 'Recovery ACT' groups are feasible, acceptable and safe in Australian public mental health services. 'Recovery ACT' may improve personal recovery, wellbeing, and psychological flexibility. Uncontrolled study design, completer analyses, and program discontinuation rates limit conclusions.

This study aimed to test the effectiveness of an acceptance-based medication adherence intervention for people with early-stage psychosis. An assessor-blind, three-arm randomized controlled trial design was used. One hundred and twenty-six participants who were adults with ≤3 years of psychosis were recruited from four district Integrated Community Centers for Mental Wellness in Hong Kong. They were randomly assigned to receive a 10-session acceptance-based, insight-inducing medication adherence therapy (AIM-AT) intervention, a conventional psychoeducation group program, or usual treatment (n = 42 per group). Primary outcomes were medication adherence and insight into the illness/treatment. All study outcomes were measured at recruitment and immediately, 6 months, and 12 months post-intervention. Participants in the AIM-AT experienced statistically significant improvements in the primary outcomes (levels of medication adherence and insight into illness/treatment), when compared to those in the other two groups over the 12-month follow-ups. The AIM-AT group also had significantly greater improvements in psychotic symptoms, psychosocial functioning, service satisfaction, length of rehospitalization, and total number of patients hospitalized over the follow-up period. These findings support the effectiveness of the AIM-AT to improve medication adherence, psychosocial health, and service satisfaction in people with early-stage psychosis., Competing Interests: Declaration of competing interest The authors declare no potential conflict of interest for the study., (Copyright © 2024. Published by Elsevier B.V.)

Previous reviews of online self-help have not exclusively focussed on universally delivered Acceptance and Commitment Therapy (ACT). This systematic review aimed to evaluate the effectiveness of universal online self-help ACT interventions for young people. Relevant databases were searched for studies examining ACT interventions that were delivered universally, online and as self-help (guided and unguided) to young people aged 10 to 25-years-old. Eleven studies met inclusion criteria. These were assessed for quality and findings summarised using a narrative synthesis. Outcomes on mental health, well-being and ACT processes were reviewed, and results across studies were mixed. Most studies found significant improvements in mental health and well-being outcomes following the ACT intervention; however less than half found improvements in ACT process measures. Subgroups, such as those with elevated mental health symptoms, had better outcomes. There were no changes in measures of psychological inflexibility. However, methodological issues limited the interpretation of findings. Heterogeneity between studies and methodological issues made it difficult for this review to draw conclusions regarding the effectiveness of universal online self-help ACT interventions for young people. Future research with consistent approaches is needed across these types of interventions to improve methodological rigour to determine whether these interventions are effective., Competing Interests: Declaration of competing interest None, (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Subthreshold obsessive-compulsive symptoms (OCS) are associated with increased distress, help seeking behaviours, and functional problems, and may predict progression into further mental health problems. This study investigated the effectiveness of a four-module internet-based acceptance and commitment therapy (iACT) for adults with OCS compared to internet-based progressive relaxation training (iPRT). Eighty-nine adults with OCS participated in a single-blinded randomised controlled trial of iACT or iPRT. Self-report assessments of OCS, psychological flexibility, and quality of life, among others, were measured at baseline, post-treatment, and at three-month follow-up. Both iACT and iPRT showed large pre-post improvements in OCS (b = 6.32, p < 0.001, d = 0.8) and medium improvements in psychological flexibility (b = -0.38, p = 0.011, d = 0.47) and quality of life (b = -5.26, p = 0.008, d = 0.58), with no significant differences in effects between groups. All improvements were maintained at follow-up. There were no differences in attrition or adherence between groups. iACT was rated more favourably by participants at post-treatment, and there were some differences in qualitative feedback across groups. These findings suggest both iPRT and iACT may be helpful in improving mental health in adults with OCS, but that iACT may be more acceptable., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Shelley Viskovich and Kenneth Pakenham receive royalties from UniQuest for commercial (not research) licensing arrangements entered into by third parties who want to deliver YOLO. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Background: Behavioral weight loss interventions achieve only limited weight loss in adolescent samples and weight regain is common. This limited intervention success may be attributed, in part, to adolescents' lack of self-regulation skills essential for lifestyle modification and use of a one-size fits-all approach to produce weight loss in boys and girls. Interventions which teach self-regulation skills, such as Acceptance-Based Therapy (ABT), and are tailored to meet gender-specific concerns, are critical to help adolescents adapt to pervasive biological and environmental influences toward weight gain., Objective: This trial tests the effect of an ABT intervention on cardiometabolic health, health-related behaviors, and psychological factors among adolescent girls with overweight or obesity (OW/OB)., Methods: Girls 14-19 years (N = 148; ≥ 40% racial/ethnic minorities) with OW/OB (BMI: ≥ 85th percentile) will be enrolled in the study. Participants will be randomized to one of two 6-month interventions, consisting of either 18 sessions of ABT or 9 sessions of a health education control, an augmented version of standard care for adolescent OW/OB, both led by bachelor's level interventionists., Results: Recruitment is taking place in Philadelphia, USA, from January 2024 to January 2028. Cardiometabolic health markers (adiposity; blood pressure; blood lipids), health-related behaviors (dietary intake; physical activity; sleep), and psychological factors (quality of life; depression; disordered eating; psychological flexibility) will be measured at baseline, mid-treatment, post-treatment, 6-month follow-up, and 12-month follow-up., Conclusions: This study will provide valuable information on a novel intervention tailored to the needs of adolescent girls with OW/OB to address self-regulation and cardiometabolic health., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Michelle I. Cardel is an employee and shareholder at WW International, Inc., (Copyright © 2024 Elsevier Inc. All rights reserved.)

This article reviews acceptance and commitment therapy (ACT) for anxiety disorders, obsessive-compulsive disorder (OCD), trichotillomania, excoriation disorder, hoarding, and body dysmorphic disorder (BDD). Measurement of psychological inflexibility and its relationship to pathology is reviewed. Outcome work in all disorders listed is reviewed with results supporting ACT for anxiety disorders, OCD, and trichotillomania, but there is limited evidence for excoriation disorder, hoarding, and BDD. Future research should focus on processes of change in addition to outcomes., Competing Interests: Disclosure Dr M.P. Twohig and Dr M.E. Levin have books published with Oxford University Press and New Harbinger Press. Dr M.P. Twohig also published a course with Praxis CET. This paper was partially supported by funding from the Huntsman Foundation., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Multiple studies have investigated the efficacy of acceptance and commitment therapy (ACT) in improving psychological flexibility among overweight and obese individuals. However, to date, no specific reviews have focused on ACT and weight-related difficulties in this population. This systematic review of the literature aims to identify and assemble all ACT interventions in randomized controlled trials (RCT) that address weight-related difficulties in the treatment of overweight and obese adults. The PRISMA 2020 framework was used for the systematic review, includes manual and computerized database searches. Five databases (Medline, PubMed, Scopus, PsycInfo, and Google) were utilized to gather all articles that: (a) published in English; (b) adopted the RCT design; (c) used ACT as an intervention; (d) included adult participants aged over 18 years with BMI of over 25 kg/m 2 , and (e) included weight-related difficulties and weight as outcome measures. The review identified seven studies comprising 698 overweight or obese participants of both genders. Improvements were reported in weight-related difficulties and percentage of weight loss in the ACT group and the non-ACT group. The present review supports ACT as an effective intervention that can help adults with weight-related difficulties and excess body weight. Further studies should be conducted in various overweight or obese populations with a more systematic RCT research design to establish the effectiveness of ACT in this area., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Objectives: To develop and determine the acceptability of a group-based digital health psychoeducational intervention aimed at reducing cancer worry based on acceptance and commitment therapy for individuals at high risk for pancreatic cancer., Sample & Setting: 13 individuals at high risk for pancreatic cancer with a genetic variant or family history., Methods & Variables: Three groups met virtually for one hour each week for four weeks. These sessions provided psychoeducational materials. Digital resources provided mindfulness and educational content. Reported measurements included qualitative responses and participant-reported acceptability., Results: All participants found the sessions to be useful and would recommend them to others. Recommendations from the first two groups included requests to access the content provided during the remote sessions, contributing to the creation of digital content for the third group., Implications for Nursing: Individuals at high risk for pancreatic cancer can benefit from psychoeducation to reduce cancer worry, which can be accomplished through digital psychoeducational interventions.

Objective: Rehabilitation interventions for chronic pain typically include education, cognitive behavioural therapy, and exercise therapy, or a combination of these. A systematic review and meta-analysis of rehabilitation interventions for neuropathic pain was conducted., Design: Randomized controlled trials were identified in PubMed, EMBASE, Cochrane Central Register of Controlled Trials, and PsycINFO databases from inception up to 3 March 2022., Subjects/patients: Adults with chronic (> 3 months) neuropathic pain., Methods: Primary outcomes were pain intensity, pain-related disability, and work participation. Secondary outcomes were quality of life, emotional strain, insomnia, and adverse outcomes, according to VAPAIN guidelines. Analyses were made post-intervention, which was defined as the assessment point immediately following the intervention or at the first-time measurement conducted after the intervention period., Results: In total, 15 studies (total population, n = 764) were incorporated. Most common interventions were cognitive behavioural programmes including acceptance and commitment therapy (n = 4), mindfulness-based interventions (n = 5), and yoga (n  =  2). Psychological interventions reduced both pain intensity (SMD -0.49, 95% CI -0.88 to -0.10) and pain-related disability (SMD -0.51, 95% CI -0.98 to -0.03), whereas other interventions had an effect on pain intensity but not on pain-related disability., Conclusion: Rehabilitation interventions, and psychological interventions in particular, seem to be of value for patients with chronic neuropathic pain.

Background: Provoked vestibulodynia (PVD) causes suffering in many women's lives due to its impact on relationships, sexual functioning and functioning in other key domains., Objective: Here, we report a randomized controlled trial conducted to examine whether Acceptance and Commitment Therapy (ACT) with a focus on values-based exposure, delivered online, benefits women with PVD., Methods: Participants (n = 88) were randomized to either guided online ACT for 10 weeks or a wait-list control group. Outcomes were assessed at baseline, post treatment and 1 year later. Analyses were based on intention to treat using linear mixed models., Results: There were significant group differences on the primary outcomes, Female Sexual Index and Female Sexual Distress Scale, in favour of online ACT with moderate effect sizes. Differences were also found on several secondary outcomes and therapeutic process measures, all in favour of ACT. No differences were found at post-treatment for depression or anxiety. At the 1-year follow-up, results were maintained and a difference between baseline and follow-up was also found for depression., Conclusion/significance: In summary, a relatively brief, guided, online version of ACT appears to produce benefits for women with PVD and related impacts on daily functioning. 50% to 60% of the women who participated in the treatment reliably improved in sexual functioning and distress., (© 2024 The Authors. European Journal of Pain published by John Wiley & Sons Ltd on behalf of European Pain Federation ‐ EFIC ®.)

Background: Given the degenerative nature of the condition, people living with motor neuron disease (MND) experience high levels of psychological distress. The purpose of this research was to investigate the cost-effectiveness of acceptance and commitment therapy (ACT), adapted for the specific needs of this population, for improving quality of life., Methods: A trial-based cost-utility analysis over a 9-month period was conducted comparing ACT plus usual care (n = 97) versus usual care alone (n = 94) from the perspective of the National Health Service. In the primary analysis, quality-adjusted life years (QALYs) were computed using health utilities generated from the EQ-5D-5L questionnaire. Sensitivity analyses and subgroup analyses were also carried out., Results: Difference in costs was statistically significant between the two arms, driven mainly by the intervention costs. Effects measured by EQ-5D-5L were not statistically significantly different between the two arms. The incremental cost-effectiveness was above the £20,000 to £30,000 per QALY gained threshold used in the UK. However, the difference in effects was statistically significant when measured by the McGill Quality of Life-Revised (MQOL-R) questionnaire. The intervention was cost-effective in a subgroup experiencing medium deterioration in motor neuron symptoms., Conclusions: Despite the intervention being cost-ineffective in the primary analysis, the significant difference in the effects measured by MQOL-R, the low costs of the intervention, the results in the subgroup analysis, and the fact that ACT was shown to improve the quality of life for people living with MND, suggest that ACT could be incorporated into MND clinical services., (© 2024 The Authors. European Journal of Neurology published by John Wiley & Sons Ltd on behalf of European Academy of Neurology.)

Background: People with MS (pwMS) commonly experience a range of hidden symptoms, including cognitive impairment, anxiety and depression, fatigue, pain, and sensory difficulties. These "invisible" symptoms can significantly impact wellbeing, relationships, employment and life goals. We developed a novel bespoke online group neuropsychological intervention combining psychoeducation and cognitive rehabilitation with an Acceptance and Commitment Therapy (ACT)-informed approach for pwMS in an acute tertiary hospital. This 'Neuropsychological Intervention for Managing Invisible Symptoms' in MS (NIMIS-MS) consisted of 6 sessions, each with a psychoeducation and ACT component. The content included psychoeducation around managing cognitive difficulties, fatigue, pain, sleep and other unpleasant sensations in MS with the general approach of understanding, monitoring, and recognising patterns and potential triggers. Specific cognitive rehabilitation and fatigue management strategies were introduced. The ACT-informed component focussed on three core ACT areas of the 'Triflex' of psychological flexibility (Harris, 2019): Being Present, Opening Up, and Doing What Matters., Methods: 118 pwMS attended the NIMIS-MS group intervention which was delivered 14 times in six-week blocks over an 18-month period. To evaluate the effectiveness and acceptability, participants completed measures of depression and anxiety (HADS), functional impairment (WSAS), Values- Progress (VQ) and Values- Obstruction (VQ), and Acceptance of MS (MSAS) pre and post NIMIs-MS group intervention. Qualitative feedback was obtained during focus groups after the final session and via online feedback questionnaires RESULTS: Pre-post analysis showed that symptoms of depression and anxiety were significantly lower and acceptance of MS was significantly higher following completion of the NIMIS-MS group. Qualitative feedback showed that participants reported that they felt more equipped to manage the "invisible" symptoms of MS following completion of the group, and benefited from using ACT-based strategies and techniques. Participants highly valued the peer support that evolved during the NIMIS-MS groups. The online format was considered more accessible than in-person groups, due to less concerns of travel time, cost, fatigue, and comfort and infection., Conclusion: Evaluation suggests that our novel NIMIS-MS groups is an acceptable, beneficial and feasible approach for providing neuropsychological interventions to individuals with MS., Competing Interests: Declaration of competing interest The authors do not have any competing or conflicting interests to declare., (Copyright © 2024. Published by Elsevier B.V.)

Trichotillomania (TTM) is associated with impairments in response inhibition and cognitive flexibility, but it is unclear how such impairments relate to treatment outcome. The present study examined pre-treatment response inhibition and cognitive flexibility as predictors of treatment outcome, change in these domains from pre-to post-treatment, and associations with TTM severity. Participants were drawn from a randomized controlled trial comparing acceptance-enhanced behavior therapy (AEBT) to psychoeducation and supportive therapy (PST) for TTM. Adults completed assessments at pre-treatment (n = 88) and following 12 weeks of treatment (n = 68). Response inhibition and cognitive flexibility were assessed using the Stop Signal Task and Object Alternation Task, respectively. Participants completed the MGH-Hairpulling Scale. Independent evaluators administered the NIMH-Trichotillomania Severity Scale and Clinical Global Impressions-Improvement Scale. Higher pre-treatment TTM severity was associated with poorer pre-treatment cognitive flexibility, but not response inhibition. Better pre-treatment response inhibition performance predicted positive treatment response and lower post-treatment TTM symptom severity, irrespective of treatment assignment. Cognitive flexibility did not predict treatment response. After controlling for age, neither neurocognitive variable changed during treatment. Response inhibition and cognitive flexibility appear uniquely related to hair pulling severity and treatment response in adults with TTM. Implications for treatment delivery and development are discussed., Competing Interests: Declaration of competing interest Ms. Barber, Dr. Deckersbach, Mr. Bauer, Dr. Compton, Dr. Robinson, Dr. Saunders, and Dr. Franklin declare that they have no conflicts of interest. Dr. Woods receives book royalties from Guilford Press, Springer Press, and Oxford University Press. Dr. Twohig has books with New Harbinger and Oxford University Press, and an online course with Praxis CET. Dr. Ricketts has received research funding from the National Institute of Mental Health (NIMH), and the TLC Foundation for Body-Focused Repetitive Behaviors. She has received honoraria from the Centers for Disease Control and Prevention and Springer Nature., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Objective: Persistent physical symptoms (PPS) represent a major health problem affecting daily functioning. This RCT aimed to examine whether a guided Internet-based treatment based on acceptance and commitment therapy (ACT) provided additional benefits compared to Treatment as Usual (TAU) in reducing somatic complaints and psychological distress in adults with PPS., Methods: A total of 103 adults with PPS related to indoor environments, chronic fatigue or both conditions were assigned to receive either either a 14-week intervention (video-based case conceptualization + Internet-based ACT) combined with TAU (iACT + TAU; n = 50) or TAU alone (n = 53). Somatic symptoms, depression, anxiety, insomnia, and psychological flexibility were assessed from pre-intervention to a 3-month follow-up. Additionally, the association between changes in psychological flexibility from pre- to post-intervention and changes in symptoms from pre to 3-month follow-up was explored. Analyses were conducted using a multigroup method with full information maximum likelihood estimator., Results: The results revealed a significant interaction effect, indicating reductions in somatic symptoms and symptoms of depression and anxiety with moderate to large between-group effects (d = 0.71-1.09). No significant interaction effect was observed in insomnia and measures of psychological flexibility., Conclusion: Internet-based ACT, when combined with Treatment as Usual, demonstrated efficacy for individuals with PPS associated with indoor environments and chronic fatigue. These findings are pertinent for primary healthcare providers, suggesting that the current treatment model could serve as a low-threshold first-line treatment option., The Clinical Trial Registration Number: NCT04532827., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: AV works as a part-time medical consultant at OP Insurance Ltd. and has worked as a part-time medical consultant at The Social Insurance Institution of Finland (Kela, until 30 November 2018), without any conflicts of interest regarding this article. The remaining authors declare that they have no conflict of interest., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Background: Emotional eating, or eating in response to negative emotions, is a commonly reported short-term emotion regulation strategy but has been shown to be ineffective in the long term. Most emotional eating interventions based on Acceptance and Commitment Therapy (ACT) have been delivered in the context of weight loss trials, highlighting a need for ACT-based emotional eating interventions in weight-neutral contexts., Aims: This proof-of-concept study aimed to test the acceptability and efficacy potential of a brief virtual ACT workshop for emotional eating in a small sample of adults identifying as emotional eaters., Methods: Twenty-six adult emotional eaters completed an ACT workshop delivered in two 1.5-h sessions over two weeks. The workshop targeted awareness and acceptance of emotions and eating urges, and valued actions around eating., Results: The acceptability of the workshop was demonstrated by high participant satisfaction. Significant improvements on all outcome measures were found and maintained up to 3 months follow-up., Conclusions: These proof-of-concept findings suggest that a brief virtual ACT workshop may improve emotional eating and associated ACT processes. Results from this study can inform a future randomized controlled trial to test the efficacy of the workshop and the role of theoretical processes of change., Trial Registration: ClinicalTrials.gov, NCT04457804., Level of Evidence: Level IV, evidence obtained from multiple time series with the intervention., Competing Interests: Declaration of competing interest None., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Background: Acceptance and commitment therapy (ACT) is a psychotherapy technique, which promotes psychological flexibility and enables patients to change behaviors based on value-directed goals. However, the beneficial effects of ACT on glycemic control, self-care behaviors, acceptance of diabetes, self-efficacy, and psychological burden are still unclear among patients with type 2 diabetes mellitus (T2DM)., Aims: This study aimed to systematically synthesize scientific evidence to determine the effectiveness of ACT among patients with T2DM on glycemic control, self-care behaviors, acceptance of diabetes, self-efficacy, and psychological burden and identify the optimal characteristics of effective interventions., Methods: Nine electronic databases were searched to identify eligible studies of randomized controlled trials from inception to June 2023. Two reviewers independently assessed the study eligibility, extracted the data, and performed the quality appraisal using the Cochrane Risk of Bias 2 Tool. The meta-analysis was conducted using Review Manager 5.3. The certainty of the evidence was rated using the Grading of Recommendations Assessment, Development, and Evaluation system., Results: Ten studies involving 712 participants were included. ACT demonstrated significant improvements on patients' glycemic control (mean difference [MD]: 0.95%; p < .001), self-care behaviors (MD: 1.86; p = .03), diabetes acceptance (MD: 7.80; p < .001), self-efficacy (standardized mean difference [SMD]: 1.04; p < .001), anxiety (SMD: -1.15; p = .006), and depression (SMD: -1.10; p = .04). However, favorable but nonsignificant improvements were found in diabetes distress. Subgroup analyses demonstrated that ACT offered more than five sessions using individualized format, with theoretical underpinnings and professional input from multidisciplinary therapists are recommended to yield better results on glycemic control and self-care behaviors., Linking Evidence to Action: Acceptance and commitment therapy could generate beneficial effectiveness on glycemic control, self-care behaviors, acceptance of diabetes, self-efficacy, anxiety, and depression among patients with T2DM. Large-scale trials with rigorous design and representative samples are warranted to strengthen the current evidence., (© 2024 Sigma Theta Tau International.)

Acceptance and Commitment Therapy (ACT) is an empirically supported psychotherapy that offers promise for the mental health of minoritised ethnic populations. Given the diversity of those presenting to inner-city services and barriers to accessing appropriate mental healthcare, we sought to develop a culturally syntonic ACT intervention for UK Vietnamese refugee communities in a practice-based partnership project between a National Health Service and local third-sector service in East London. The aim was to explore the feasibility, acceptability and impact of the adapted intervention to inform culturally inclusive clinical practice and future research. We outline key aspects of Vietnamese belief systems and culture, and consider how these might influence the optimisation of group-based ACT. We then present a mixed-method evaluation of the seven-session adapted ACT group for 11 participants (9 male and 5 female, aged between 44 and 73 years). Individual-level change analyses indicated clinically significant improvements in psychological flexibility for the minority of participants and a mixed pattern for impact on well-being. A thematic analysis and descriptive approach examined acceptability, feasibility and narratives of impact. Participants reported positive feedback on group experience, relevance and usefulness, and emergent themes indicate that the group facilitated key acceptance, commitment and behaviour-change processes, promoted social connections and increased engagement in meaningful life activities in relation to new perspectives and values-based action. Limitations are outlined, but overall, findings suggest preliminary support for the potential beneficial effect of the adapted ACT group as a feasible, culturally acceptable therapeutic approach for UK Vietnamese communities that is worthy of further investigation., Competing Interests: Declaration of conflicting interestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Competing Interests: I declare no competing interests.

Background: International guidelines have recommended cognitive behavioural therapy, including acceptance and commitment therapy (ACT), as it offers validated benefits for managing fibromyalgia; however, it is inaccessible to most patients. We aimed to evaluate the effect of a 12-week, self-guided, smartphone-delivered digital ACT programme on fibromyalgia management., Methods: In the PROSPER-FM randomised clinical trial conducted at 25 US community sites, adult participants aged 22-75 years with fibromyalgia were recruited and randomly assigned (1:1) to the digital ACT group or an active control group that offered daily symptom tracking and monitoring and access to health-related and fibromyalgia-related educational materials. Randomisation was done with a web-based system in permuted blocks of four at the site level. We used a blind-to-hypothesis approach in which participants were informed they would be randomly assigned to one of two potentially effective therapies under evaluation. Research staff were not masked to group allocation, with the exception of a masked statistics group while preparing statistical programming for the interim analysis. The primary endpoint was patient global impression of change (PGIC) response rate at week 12. Analyses were by intention to treat. The trial was registered with ClinicalTrials.gov, NCT05243511 (now fully closed)., Findings: Between Feb 8, 2022, and Feb 2, 2023, 590 individuals were screened, of whom 275 (257 women and 18 men) were randomly assigned to the digital ACT group (n=140) and the active control group (n=135). At 12 weeks, 99 (71%) of 140 ACT participants reported improvement on PGIC versus 30 (22%) of 135 active control participants, corresponding to a difference in proportions of 48·4% (95% CI 37·9-58·9; p<0·0001). No device-related safety events were reported., Interpretation: Digital ACT was safe and efficacious compared with digital symptom tracking in managing fibromyalgia in adult patients., Funding: Swing Therapeutics., Competing Interests: Declaration of interests RMG reports being a consultant and receiving stock options or bond holdings from Swing Therapeutics. LMM reports being a consultant to Swing Therapeutics. DAW reports being a consultant to Community Health Focus and Swing Therapeutics and receiving grants from the National Institutes of Health and Patient-Centered Outcome Research Institute. YD, NV, ZG, KG, and ACK report receiving stock options and salary from Swing Therapeutics. MJR reports being a founder, chief executive officer, and receiving stock options and salary from Swing Therapeutics. JMZ and DR report receiving grants from Swing Therapeutics (as study site investigators for the clinical investigation presented in this manuscript). DR reports salary from Bristol Myers Squibb. ALC reports being a consultant to Scilex Pharmaceuticals and Swing Therapeutics, and receiving grants from the National Institutes of Health, the US Department of Defense, and the Cystic Fibrosis Foundation. DJC reports being a consultant to AbbVie, Allergan, Aptinyx, Eli Lilly, H Lundbeck A/S, Heron Therapeutics, Neumentum, Regeneron Pharmaceuticals, Samumed, Swing Therapeutics, Tonix Pharmaceuticals, Virios Therapeutics, and serving as speaker for or receiving honoraria from Fasken Martineau DuMoulin LLP, Kellogg, Hansen, Todd, Figel & Frederick, Marks & Clerk Law, Nix Patterson, Pfizer, Zuber Lawler, and Del Duca. BV reports being an employee of Rho and a consultant to Swing Therapeutics. LMA reports being a consultant to Analgesic Solutions, Aptinyx, Axsome Therapeutics, Eliem Therapeutics, Ono Pharmaceuticals, and Scilex, and receiving grants from AbbVie, Aptinyx, Otsuka, Swing Therapeutics (principal investigator for the clinical investigation presented in this manuscript), Teva Pharmaceuticals, Tonix Pharmaceuticals, and Virios Therapeutics. JVL reports receiving a grant from Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública., (Copyright © Elsevier Ltd. All rights reserved, including those for text and data mining, AI training, and similar technologies.)

Introduction: Cancer-related fatigue is common in patients with advanced lung cancer. It not only interferes with patients' health-related quality of life, but also increases the caregiving burden of their caregivers. Acceptance and commitment therapy is emerging as a novel way to advocate accepting negative experiences and taking effective actions based on their own values to help patients commit meaningful actions in the course of cancer diseases. This trial aims to test the feasibility, acceptability and preliminary effects of acceptance and commitment therapy for fatigue interference in patients with advanced lung cancer and the caregiver burden., Method and Analysis: A two-arm, assessor-blind pilot randomised controlled trial will be conducted. A total of 40 advanced lung cancer patient-caregiver dyads, who live in rural areas, will be recruited from a university-affiliated hospital in central China. The participants will be randomised to receive an online six-session acceptance and commitment therapy (i.e. involving metaphors, experiential exercises and mindfulness exercises facilitated by virtual reality technology) plus health education (intervention group, n=20) or health education (control group, n=20). Outcomes will be measured at baseline and 1 week postintervention. The primary outcomes are study feasibility (i.e. eligibility rate, recruitment rate, attrition rate and adherence rate), fatigue interference and caregiver burden. The secondary outcomes are health-related quality of life, meaning in life, psychological flexibility and mindful attention. Semistructured interviews will be conducted to explore the feasibility and experiences of the intervention in a subsample of 10 participants from the intervention group., Ethics and Dissemination: This study has been approved by the Joint Chinese University of Hong Kong-New Territories East Cluster Clinical Research Ethics Committee (CREC Ref. No. 2023.030) and the Medical Ethics Committee of Xiangya Hospital Central South University (No. 202305336). The findings will be disseminated in peer-reviewed journals and through local or international conference presentations., Trial Registration Number: NCT05885984., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: The mental and emotional health of persons diagnosed with cancer is frequently affected. The acceptance and commitment therapy (ACT) is one of the psychological interventions that has proven successful in easing these psychological symptoms and enhancing cancer patients' psychological well-being., Methods: A two-arm randomized controlled trial study was utilized, 30 eligible clients with colorectal cancer were chosen randomly and were given ACT therapy at a 1:1 ratio. ACT was delivered in six sessions for 3 weeks, followed by 3 months follow-up., Results: The table shows a statistically significant increase in the mean scores of the mental health and its flourishing level among the study group than those of the control group. Cognitive impairment was significantly decreased among the study group than for those in the control group., Conclusion: The ACT-based interventions may be a promising approach for improving mental health and cognitive function in cancer patients, particularly those with advanced disease., (© 2024 Wiley Periodicals LLC.)

Recent publications within Contextual Behavioral Science provided a rationale for the expansion of intervention efficacy research using methods that capture idiographic factors and processes. We conducted a systematic review of the use and quality of single-case experimental designs (SCED) within the Acceptance and Commitment Therapy (ACT) literature in adult clinical populations. The systematic review was conducted according to PRISMA guidelines and the databases CINAHL, MEDLINE, PsycINFO, PsycArticles and OpenGrey were searched for peer-reviewed articles. Further studies were sought through review of reference lists of all full text studies. Studies were assessed against What Works Clearinghouse (WWC) single-case design standards. Twenty-six studies met eligibility criteria and were conducted within research teams all implementing multiple-baseline designs. Twenty-four studies did not meet WWC standards with most failing to ensure a degree of concurrence across participants. The extent of randomisation methods was also captured. The review highlights the sparsity of SCEDs within ACT literature in clinical populations and current methodological practices. Limitations of the review and implications for future research are discussed., (Copyright © 2024 Association for Behavioral and Cognitive Therapies. Published by Elsevier Ltd. All rights reserved.)

Objectives: To examine, in depth, the perspectives of facilitators of a videoconference-delivered group Acceptance Commitment Therapy (ACT) intervention for perinatal women with moderate-severe mood and/or anxiety disorders., Design: Qualitative study., Methods: Thematic analysis was used to analyse semi-structured interviews with seven facilitators and post-session reflections with six facilitators., Results: Four themes were generated. First, there are barriers to accessing psychological therapies during the perinatal period and improvements are required. Second, COVID-19 has accelerated the provision of remote therapies, including videoconference-delivered group therapy, enabling a continuity of service, and facilitating diversification of treatment access and choice. Third, there are benefits of videoconference-delivered group ACT in the perinatal period, with reservations. Attending a group via videoconference is perceived to be less exposing, and offers normalisation, social support, empowerment, and flexibility. Facilitators also shared reservations including whether service users would prioritise videoconference-delivered group therapy, concerns about limited non-verbal cues and the therapeutic alliance, reporting a lack of an evidence base, and technology challenges when working online. Finally, facilitators offered recommendations for videoconference-delivered group therapy best practice in the perinatal period, including the provision of equipment and data, contracts for attendance and suggestions to maximise engagement and group cohesion., Conclusions: This study raises important considerations regarding the use of videoconference-delivered group ACT in the perinatal context. There are opportunities afforded by videoconference-delivered group therapies, which is important and timely given the increased drive towards improving access to perinatal services and psychological therapies, and the need for 'COVID-proof' therapies. Recommendations for best practice are offered.

Chronic pain and depression are frequently comorbid conditions associated with significant health care and social costs. This study examined the cost-utility and cost-effectiveness of videoconference-based group forms of Acceptance and Commitment Therapy (ACT) and Behavioral Activation Therapy for Depression (BATD), as a complement to treatment-as-usual (TAU), for patients with chronic low back pain (CLBP) plus depressive symptoms, compared to TAU alone. A trial-based economic evaluation (n = 234) was conducted from a governmental and health care perspective with a time horizon of 12 months. Primary outcomes were the Brief Pain Inventory-Interference Scale (BPI-IS) and Quality Adjusted Life Year. Compared to TAU, ACT achieved a significant reduction in total costs (d = .47), and BATD achieved significant reductions in indirect (d = .61) and total costs (d = .63). Significant improvements in BPI-IS (d = .73 and d = .66, respectively) and Quality Adjusted Life Year scores (d = .46 and d = .28, respectively) were found in ACT and BATD compared to TAU. No significant differences in costs and outcomes were found between ACT and BATD. In the intention-to-treat analyses, from the governmental and health care perspective, no significant differences in cost reduction and incremental effects were identified in the comparison between ACT, BATD, and TAU. However, in the complete case analysis, significant incremental effects of ACT (∆BPI-IS = -1.57 and -1.39, respectively) and BATD (∆BPI-IS = -1.08 and -1.04, respectively) compared with TAU were observed. In the per-protocol analysis, only the significant incremental effects of ACT (∆BPI-IS = -1.68 and -1.43, respectively) compared to TAU were detected. In conclusion, ACT and BATD might be efficient options in the management of CLBP plus comorbid depression symptoms as compared to usual care. However, no clear difference was found in the comparison between the 2 active therapies regarding cost-effectiveness or cost-utility. PERSPECTIVE: The economic evaluation of psychological therapies for the management of complex conditions can be used in decision-making and resource allocation. This study provides evidence that ACT and BATD are more effective and involve a greater reduction in costs than usual care in the management of CLBP plus comorbid depressive symptoms. TRIAL NUMBER: NCT04140838., (Copyright © 2024 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.)

Background: Acceptance and Commitment Therapy (ACT) is a type of Cognitive Behavioural Therapy, which has demonstrated positive outcomes in individuals with chronic pain. The purpose of this study was to compare the effect of an 8-week programme combining Exercise with Acceptance and Commitment Therapy (ExACT) with a standalone supervised exercise programme at 1-year follow-up., Methods: One hundred and seventy-five people with chronic pain were randomly assigned to ExACT or supervised exercise only. The primary outcome was pain interference measured with the Brief Pain Inventory-Interference Scale. Secondary and treatment process outcomes included pain severity, depression, anxiety, pain catastrophizing, pain self-efficacy, fear avoidance, pain acceptance, committed action, healthcare utilization, patient satisfaction, and global impression of change. Estimates of treatment effects at 1-year follow-up were based on intention-to-treat analyses, implemented using a linear mixed-effects model., Results: Eighty-three participants (47.4%) returned the outcome measures at 1-year follow-up. No significant difference was observed between the groups for the primary outcome, pain interference. There was a statistically significant difference between the groups, in favour of ExACT for pain catastrophizing. Within group improvements that were observed within both groups at earlier timepoints were maintained at 1-year follow-up for many of the secondary and treatment process outcomes. ExACT group participants reported higher levels of satisfaction with treatment and global perceived change., Conclusions: The study results showed no significant difference between the two groups for the primary outcome pain interference at 1-year follow-up. Future research could investigate factors that may predict and optimize outcomes from these types of intervention for people living with chronic pain., Significance: Few previous randomized controlled trials investigating ACT for chronic pain have included long-term follow-up. This study found that Exercise combined with ACT was not superior to supervised exercise alone for reducing pain interference at 1-year follow-up. Further research is necessary to identify key processes of therapeutic change and to explore how interventions may be modified to enhance clinical outcomes for people with chronic pain., (© 2024 The Authors. European Journal of Pain published by John Wiley & Sons Ltd on behalf of European Pain Federation ‐ EFIC ®.)

Background: The prevalence of major depressive disorder (MDD) is on the rise globally, and the use of antidepressant medications for its treatment does not usually result in full remission. However, the combination of physical exercise and psychotherapy for the treatment of MDD increase the rate of full remission among patients. This three-armed, parallel-group, double-blinded randomised controlled trial (RCT) aims to assess and compare the effects between the combination of exergame and acceptance and commitment therapy (e-ACT) programme, ACT only and treatment-as-usual (TAU) control groups on the severity of depression and anxiety symptoms, the degree of experiential avoidance and quality of life (QoL) and the serum levels of depression biomarkers (such as brain-derived neurotrophic factor, C-reactive protein and vascular endothelial growth factor) among patients with MDD across three time points., Methods and Analysis: This RCT will recruit 126 patients with MDD who will be randomised using stratified permuted block randomisation into three groups, which are the combined e-ACT programme, ACT-only and TAU control groups in a 1:1:1 allocation ratio. The participants in the e-ACT and ACT-only intervention groups will undergo once a week intervention sessions for 8 weeks. Assessments will be carried out through three time points, such as the pre-intervention assessment (t 0 ), assessment immediately after completion of the intervention at 8 weeks (t 1 ) and assessment at 24 weeks after completion of the intervention (t 2 ). During each assessment, the primary outcome to be assessed includes the severity of depression symptoms, while the secondary outcomes to be assessed are the severity of anxiety symptoms, experiential avoidance, QoL and depression biomarkers., Ethics and Dissemination: Approval of this study was obtained from the Human Research Ethics Committee of Universiti Sains Malaysia (USM/JEPeM/PP/23050420). The findings of the study will be published in academic peer-reviewed journals., Trial Registration Number: NCT05812001 (ClinicalTrials.gov). Registered on 12 April 2023., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: Hematopoietic cell transplantation (HCT) is a highly invasive and life-threatening treatment for hematological neoplasms and some types of cancer that can challenge the patient's meaning structures. Restoring meaning (i.e., building more flexible and significant explanations of the disease and treatment burden) can be aided by strengthening psychological flexibility by means of an Acceptance and Commitment Therapy (ACT) intervention. Thus, this trial aims to examine the effect of the ACT intervention on the meaning-making process and the underlying mechanisms of change in patients following HCT compared to a minimally enhanced usual care (mEUC) control group. The trial will be enhanced with a single-case experimental design (SCED), where ACT interventions will be compared between individuals with various pre-intervention intervals., Methods: In total, 192 patients who qualify for the first autologous or allogeneic HCT will be recruited for a two-armed parallel randomized controlled trial comparing an online self-help 14-day ACT training to education sessions (recommendations following HCT). In both conditions, participants will receive once a day a short survey and intervention proposal (about 5-10 min a day) in the outpatient period. Double-blinded assessment will be conducted at baseline, during the intervention, immediately, 1 month, and 3 months after the intervention. In addition, 6-9 participants will be invited to SCED and randomly assigned to pre-intervention measurement length (1-3 weeks) before completing ACT intervention, followed by 7-day observations at the 2nd and 3rd post-intervention measure. The primary outcome is meaning-related distress. Secondary outcomes include psychological flexibility, meaning-making coping, meanings made, and well-being as well as global and situational meaning., Discussion: This trial represents the first study that integrates the ACT and meaning-making frameworks to reduce meaning-related distress, stimulate the meaning-making process, and enhance the well-being of HCT recipients. Testing of an intervention to address existential concerns unique to patients undergoing HCT will be reinforced by a statistically rigorous idiographic approach to see what works for whom and when. Since access to interventions in the HCT population is limited, the web-based ACT self-help program could potentially fill this gap., Trial Registration: ClinicalTrials.gov ID: NCT06266182. Registered on February 20, 2024., (© 2024. The Author(s).)

Objectives: To assess the efficacy of acceptance and commitment therapy (ACT) for patients with chronic pain., Materials and Methods: The research conducted a systematic search of the Cochrane Library, Web of Science, PubMed, EMBASE, PsycINFO, and Cumulative Index of Nursing and Allied Health Literature (CINAHL) databases following the PRISMA guidelines. The retrieval time limit was from the establishment of the database to October 2023. A meta-analysis was carried out for the randomized controlled trials (RCTs) that meet the inclusion and exclusion criteria by using RevMan 5.3., Results: Twenty-one RCTs were included. At post-treatment, a significant medium effect size (ES) was found in measuring pain interference, functional impairment, pain acceptance, psychological inflexibility, and depression; Pain intensity, anxiety, and quality of life (QOL) had a small ES. At three months post-treatment, a large ES was found in measuring functional impairment, and a medium ES was found in the other indicators., Conclusion: The researchers provided evidence for the effectiveness of ACT as an intervention for patients with chronic pain, which can be applied by clinicians or nurses in practice. Future research should explore the applicability of ACT to different pain conditions and modalities., Implications for Nursing: Post-treatment data highlight the efficacy of ACT in moderating pain-related outcomes. Clinical nurses are encouraged to incorporate ACT into routine patient education and interventions, including promoting pain acceptance, promoting mindfulness practices, and using cognitive stress reduction techniques. Standardized follow-up after an ACT intervention for patients with chronic pain is critical, including regular assessment, feedback, and realignment of treatment strategies. Overall, ACT became an important tool for nurses to improve the lives of patients with chronic pain., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Ye et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Objectives: The main objective of the study is to investigate the short-term efficacy of Acceptance and Commitment Therapy (ACT) on the simultaneous modification of biological indicators of risk and psychological well-being in patients with coronary heart disease attending cardiac rehabilitation (CR)., Design: This was a two-arm randomised controlled trial comparing a brief, manualised, ACT-based intervention with usual care (UC)., Setting: The study was conducted in an outpatient CR unit in Italy. Data collection took place from January 2016 to July 2017., Participants: Ninety-two patients were enrolled and randomised, following an unbalanced randomisation ratio of 2:1 to the ACT group (n=59) and the control group (n=33). Eighty-five patients completed the ACT (n=54) and the UC (n=31) interventions and were analysed., Interventions: The control group received UC, a 6 weeks multidisciplinary outpatient CR programme, encompassing exercise training, educational counselling and medical examinations. The experimental group, in addition to UC, participated in the Acceptance and Commitment Therapy on HEART disease (ACTonHEART) intervention encompassing three group sessions based on ACT., Outcomes: The primary outcomes were Low Density Lipoproteins (LDL)cholesterol, resting systolic blood pressure, body mass index (BMI) and psychological well-being measured by the Psychological General Well-Being Index (PGWBI). Outcome measures were assessed at baseline and at the end of CR., Results: Based on linear mixed models, no significant group × time interaction was observed for either the primary outcomes (β, 95% CI: PGWBI =-1.13, -6.40 to -4.14; LDL cholesterol =-2.13, -11.02 to -6.76; systolic blood pressure =-0.50, -10.76 to -9.76; diastolic blood pressure =-2.73, -10.12 to -4.65; BMI =-0.16, -1.83 to -1.51, all p values >0.05) or the secondary outcomes (all p values >0.05). A significant time effect was found for the PGWBI total (beta=4.72; p=0.03)., Conclusions: Although analyses revealed null findings, the results can inform the design of future ACT-based CR interventions and can help researchers to strike a balance between the idealised implementation of an ACT intervention and the structural limitations of existing CR programmes., Trial Registration Number: NCT01909102., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: The bidirectional relationship between inflammatory bowel disease (IBD) flare-ups and depression/anxiety symptoms has prompted investigations into psychotherapy to improve health-related quality of life (HRQoL) by targeting depression and anxiety. Acceptance commitment therapy (ACT) is effective in improving symptoms of depression and anxiety in people with chronic diseases, yet minimal research has examined ACT's effectiveness for IBD. This study examines the feasibility, acceptability, and preliminary efficacy of the ACTforIBD program, an online program codesigned with consumers to deliver ACT to those with IBD., Methods: Adults with IBD and symptoms of mild-moderate distress were randomized to ACTforIBD or an active control (psychoeducation) condition. Participants completed 8 weekly, 1-hour sessions, 4 of which were therapist facilitated. Feasibility was based on recruitment and retention and acceptability was derived from postprogram satisfaction measures. Preliminary efficacy was determined by group differences in rate of change in study outcomes from baseline to postprogram., Results: Of 62 participants (89% women, 11% men; mean age  33 years), 55 completed the program (ACTforIBD: n = 26 [83.9%]; active control: n = 29 [93.5%]). Adherence and acceptability were high in the ACTforIBD group, with 80% of participants completing all self-directed modules and 78% of participants expressing satisfaction with the program. Significant and marginally significant group × time interactions were found for anxiety symptoms (b = -1.89; 95% confidence interval, -3.38 to -0.42) and psychological HRQoL (b = -0.04; 95% confidence interval, -0.07 to 0.01), showing decreased anxiety and increased psychological HRQoL in the intervention group., Conclusions: ACTforIBD is feasible, acceptable, and improved anxiety symptoms, and psychological HRQoL. This highlights the need for a full-scale randomized controlled trial to further examine the program's efficacy., (© 2023 Crohn’s & Colitis Foundation. Published by Oxford University Press on behalf of Crohn’s & Colitis Foundation.)

Objective: To compare the effectiveness of an acceptance and commitment therapy (ACT)-based protocol and cognitive behavior therapy (CBT) for insomnia in adults., Method: The participants comprised 227 adults with insomnia. They were randomized to six weekly group sessions consisting of acceptance and commitment therapy for insomnia (n = 76), cognitive behavioral therapy for insomnia (n = 76), or waitlist (WL; n = 75)., Results: Both treatment modalities significantly reduced insomnia severity with large effect sizes in the posttreatment phase. These results were maintained during the follow-up period with large effect sizes. CBT was superior to ACT in reducing the Insomnia Severity Index at posttreatment and follow-up, with a small effect size. ACT was superior to WL at posttreatment and at follow-up, with a moderate effect size. The treatment response and remission ratios were higher with CBT at posttreatment and similar at 6-month follow-up for both therapies, as ACT made further gains in response and remission. ACT had a significantly higher proportion of response and remission than WL in both periods (posttreatment and follow-up). Both therapies improved daytime functioning at both posttreatment and follow-up, with few differential changes across the groups., Conclusions: Both cognitive behavior therapy and acceptance and commitment therapy are effective, with CBT showing superiority and ACT showing delayed improvement. ACT has proven to be an effective therapy, especially in the long term, even in the absence of behavioral techniques such as stimulus control and sleep restriction, and it is a viable option for those who have difficulties adhering to behavioral techniques. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

This review summarized recent systematic reviews and meta-analyses on randomized controlled trials evaluating acceptance and commitment therapy (ACT). Although the strength of evidence varies, overall there is plausible evidence for the efficacy of ACT for a wide range of areas including depression, anxiety disorders, obsessive-compulsive and related disorders, psychosis, substance use disorders, chronic pain, coping with chronic health conditions, obesity, stigma, and stress and burnout. ACT is also efficacious when delivered in digital self-help formats. Reviews of mediation research indicate ACT works through increasing psychological flexibility., Competing Interests: Disclosure The authors have nothing to disclose., (Copyright © 2024 Elsevier Inc. All rights reserved.)

The current systematic and meta-analytic review sought to integrate a growing number of studies examining dimensions of psychological flexibility as treatment mechanisms for Acceptance and Commitment Therapy (ACT). Analyses of 77 records (67 unique studies; N total  = 9123 participants) from comprehensive searches of multiple databases suggested that ACT interventions led to reduced inflexibility (i.e., lowered global inflexibility, lack of present moment awareness, cognitive fusion, experiential avoidance, self-as-content, & inaction) and increased flexibility (i.e., committed action/contact with values, global flexibility/acceptance, & defusion). Those changes remained significant when ACT was compared with waitlist or active treatments and were significantly linked to corresponding drops in psychological distress, supporting their roles as ACT treatment mechanisms. Moderation analyses revealed that the use of student samples, exclusion of clinically symptomatic individuals, and comparisons of ACT with other active treatments weakened these effects whereas offering ACT as an individual therapy and excluding individuals in extreme crisis (i.e., with suicidal ideation) strengthened them. The meta-analytic findings and systematic review suggested specific recommendations for future clinical work and research on ACT mechanisms: (1) Evaluate both psychological flexibility and inflexibility as distinct treatment mechanisms, (2) Evaluate specific dimensions of psychological flexibility/inflexibility as mechanisms with multidimensional scales (CompACT, MPFI), (3) Broaden treatment outcomes to include forms of wellbeing (peace of mind, vitality, connectedness), (4) Assess mechanisms and outcomes repeatedly throughout treatment to model the process of therapeutic change, (5) Investigate non-specific factors (therapeutic alliance, treatment adherence) as mechanisms, and (6) Explore treatment mechanisms in effectiveness studies., Competing Interests: Declaration of competing interest The authors declare they have no conflicts of interest., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

The current study explored perspectives of those with inflammatory bowel disease (IBD) and comorbid anxiety and/or depression on a hybrid acceptance and committment therapy (ACT) intervention, compared to an active control. This qualitative study was nested within a randomized controlled trial (RCT) where an experimental group received an 8-week blended delivery ACTforIBD intervention (four sessions telehealth, four sessions pre-recorded self-directed), while an active control group received a psychoeducation program of similar intensity. Semi-structured interviews were conducted post-intervention and at a 3-month follow-up. Themes were interpreted using reflexive thematic analysis. Twenty individuals participated; ten in each condition. Seven themes were constructed, including three shared themes between groups: I Am Worth Advocating For, Present Moment Is My Biggest Ally, and Ambivalence About Self-Directed Modules. Two themes were identified for the ACTforIBD group: Symptoms Are Going to Happen and Moving Toward Values while two themes identified from the ActiveControl group were: Reset and Refresh and It's Ok to Say No. Acceptance and values modules from ACTforIBD were perceived as useful in reducing psychological distress for those with IBD, while the ActiveControl group felt their program affirmed existing effective coping strategies. Access to external resources for self-directed modules and networking may increase engagement with content long term., (© 2024. The Author(s).)