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BackgroundA wide range of self-directed weight-loss interventions are available, providing users with a variety of tools delivered through various formats to regulate weight-related behavior patterns. However, it is unclear how effective self-directed interventions are and how they promote weight loss and weight maintenance. ObjectiveA systematic review of reviews was conducted to examine the effectiveness of such interventions and to identify intervention content associated with effectiveness. MethodsMEDLINE, Embase, PsycINFO, CINAHL, and the Cochrane Library for systematic reviews were searched from 2000-2012 for reviews of the effectiveness of self-directed interventions on weight loss and weight maintenance in adults. Two reviewers used predefined inclusion criteria to select relevant reviews and assess their quality using the Overview Quality Assessment Questionnaire (OQAQ). We extracted data on effectiveness and on relationships between intervention characteristics and effectiveness. ResultsTwenty reviews were included and quality assessed. Findings relevant to self-directed interventions, including interactive websites, smartphone applications, and text messaging (short message service, SMS) were summarized. Findings were mixed but promising. For example, one review of Internet-based interventions found that, when used in conjunction with standard weight loss programs, these interventions resulted in a significant average increase in weight loss of 1.5 kg over evaluation periods. Unfortunately, only 7 of 20 reviews were of high methodological quality according to OQAQ scores, and only 4 employed meta-analyses. Few reviews linked intervention content to effectiveness. ConclusionsCurrent evidence suggests that self-directed interventions can independently promote weight loss and can augment interventions involving personal contact. Particular change techniques and delivery modes including individualized feedback, email counseling, and online social support appear to enhance effectiveness. Further reviews of the content of self-directed weight-loss intervention studies are needed to clarify which change techniques delivered through which delivery formats optimize intervention effectiveness.

A novel 4 × 4 Wadsley–Roth block phase, Nb9Ti1.5W1.5O30, has been prepared and its structure determined through Neutron and X-ray diffraction studies. Electrochemical testing indicated excellent high rate performance, with a returned delithiation capacity of 184 (4) mA h g−1 at a current of 2 A g−1. [ABSTRACT FROM AUTHOR]

To investigate the feasibility and acceptability of a volunteer-led balance programme for older adults. A feasibility cluster RCT with focus groups were conducted in faith-based institutions. Eligibility criteria were: participants were ≥65 years, able to do five times sit -to-stand, had no falls in the previous six months and had good mental capacity. The intervention included supervised group exercises and exercise booklets for six months, education and a fall poster. Assessments included, TUG, MCTSiB, FTST, FES, mABC, OPQoL and DGLS at baseline, 6 weeks, and 6 months. Feasibility measures included numbers of volunteers, sessions, and volunteers" time commitment, views of participants about sustainability of program using qualitative focus groups and volunteers' ability to deliver programme. Three churches participated with 31 participants in each group. Participants had a mean age of 77.3 years, were 100% British, and 79% female. The sample size estimate for a future trial using TUG, was 79 per group. Focus groups showed perceived social and physical improvements in participants, need to extend the programme to the wider community, and increased confidence, participation and socialisation. The community-based balance training in faith-based institutions, was feasible and acceptable in one geographical area and requires evaluation in cohesive diverse communities. If an institution or a community is united through faith, culture, national roots, or tradition, then these groups are ideal for such balance rehabilitation programmes, because of the familiarity of the location and people, cohesive culture or their ideology to help their communities. Participants and volunteers perceived improved participation, confidence and socialisation and were keen to continue programme. It is important to develop community-based falls prevention programmes that the National Health Service (NHS) can partially support using volunteers to reduce the burden of falls in the community and for the NHS. [ABSTRACT FROM AUTHOR]

Background: Abdominal aortic aneurysm (AAA) is an important cardiovascular health problem. Ultrasound screening is proven to reduce AAA mortality and programmes have been implemented in some healthcare systems. Those who are identified as having a small AAA in screening enter into a surveillance programme to monitor AAA size. Individuals in AAA surveillance are at elevated risk of cardiovascular events, which is not currently addressed sufficiently. We aimed to develop a simple intervention to reduce cardiovascular risk, which could be embedded in AAA surveillance pathways. Methods: Intervention mapping methods were used to co-develop the intervention with individuals with AAA, families/carers, and healthcare staff. We identified "targets for change" by synthesising research evidence and international guidelines and consulting with patients, caregivers and health service providers. We conducted a series of workshops to identify barriers to and facilitators of change and used taxonomies of behaviour change theories and techniques to match intervention strategies to each target. Further stakeholder involvement work helped refine the intervention. Results: The developed intervention focusses on assessment and individually tailored discussion of risk factors, exchanging information, building motivation and action planning, followed by review of progress and problem-solving. Workbooks covering physical activity, diet, stress management, alcohol, smoking, blood pressure and mental health are provided to support behaviour change. The intervention is facilitated by trained healthcare professionals during the patient's AAA screening appointment for the duration that they are in surveillance. Discussion: The developed intervention will now be tested to assess whether it can be integrated with the current AAA screening programme. The developed intervention is a novel approach to reducing cardiovascular disease in the AAA population, it is also the first intervention which tries to do this in this population. Trial registration: International Clinical Trial Registration: ISRCTN93993995. [ABSTRACT FROM AUTHOR]

Investigate associations between quantity, content and specificity of action-plans and weight loss in a diabetes prevention study. Prospective cohort study nested within a randomised controlled trial. Participants completed action-planning worksheets during intervention sessions. Action-plans were coded in terms of: number of plans set, their content, and specificity. Multivariate regression analyses assessed associations with weight loss at four-months. 890 planning-worksheets from 106 participants were analysed. Participants wrote a mean of 2.12 (SD = 1.20) action-plans per worksheet, using a mean of 2.20 (SD = 0.68) specificity components per action-plan. Quantity of action-plans per worksheet decreased over time (r = −0.137, p < 0.001) and increased quantity was associated with reduced specificity [r = −.215, p < 0.001]. Walking (34.9% of action-plans) and reducing high fat/sugar snacks (26.1%) were the most commonly planned lifestyle actions. In multivariate modelling, increased quantity of action-plans was associated with greater weight loss (R2 = 0.135, Unstandardised Beta = 0.144, p = 0.002). Specificity was not significantly associated with weight-loss (p = 0.096). Producing more action-plans was associated with greater weight loss. Further research should directly compare more versus less specific action-plans and explore ways to sustain engagement in action-planning. Our findings imply that participants should freely set numerous action-plans, rather than being encouraged to focus on specificity Supplemental data for this article is available online at https://doi.org/10.1080/08870446.2022.2055026. [ABSTRACT FROM AUTHOR]