Search

Purpose: Cognitive fatigue is commonly reported and described as disabling by patients recovering from neurological conditions including stroke. However, cognitive fatigue is usually underdiagnosed among stroke survivors which leads to a lack of specific treatments for this condition. Therefore, the aim of this study was to explore post-stroke cognitive fatigue as it is experienced by stroke survivors. Methods: This qualitative research followed the principles of descriptive phenomenology within a constructivist paradigm. Individual semi-structured interviews were conducted with stroke survivors experiencing post-stroke cognitive fatigue recruited through the Heart and Stroke Foundation, the Canadian Partnership for Stroke Recovery, and social media posts. Data were analyzed through inductive content analysis. Results: Eleven stroke survivors participated. The analysis revealed five themes illustrating the experience and descriptions of post-stroke cognitive fatigue: (1) characteristics, (2) aggravating factors, (3) management, (4) effect of cognitive fatigue on daily life, and (5) social awareness and support. Conclusion: This study highlights the complexity of post-stroke cognitive fatigue. Cognitive fatigue becomes more evident after discharge; therefore, clinicians should consistently screen for it and provide proper education to the patients and their carers. IMPLICATIONS FOR REHABILITATION: Cognitive fatigue is a complex phenomenon that can negatively affect the daily life of stroke survivors. Sensory-overloaded environments, emotional distress, poor sleep, and engaging in complex cognitive tasks can trigger post-stroke cognitive fatigue. More education on the concept of cognitive fatigue should be provided to healthcare providers to be able to identify and manage this symptom properly. [ABSTRACT FROM AUTHOR]

Fatigue is a common and debilitating symptom in multiple sclerosis (MS). However, after over 100 years of inquiry its definition, measurement and understanding remains elusive. This paper describes the challenges clinicians and researchers face when assessing and treating MS patients, as well as our understanding of neural mechanisms involved in fatigue. Challenges for the future are discussed. [ABSTRACT FROM AUTHOR]

Ski-orienteering, which combines cross-country skiing with orienteering, dates back to the late 1800s, with the first World Championships in 1975. While researchers have explored the physiological and biomechanical determinants of success in cross-country skiing and orienteering separately in detail, scientific knowledge concerning ski-orienteering remains limited. Based on the information that is presently available together with interviews with elite ski-orienteers, we explore here for the first time the historical development, physiological, biomechanical, and psychological demands, certain training strategies, and future prospects and challenges associated with this sport, including its potential to become an Olympic event. A demanding endurance sport (with racing times of 12–120 min), ski-orienteering requires both considerable aerobic and anaerobic capacity, as well as well-trained upper and lower body muscles. In addition, ski-orienteering demands advanced skiing technique on various types of terrain, with frequent changes between sub-techniques, on both wide and narrow tracks and with numerous turns on downhill terrain. Moreover, success in this sport requires accurate and rapid orienteering—the ability to navigate a complex network of ski tracks with numerous intersections/crossings in a manner designed to pass the multiple control points in the order indicated on the map as rapidly as possible, i.e., advanced spatial cognition and highly developed navigational skills. Thus, ski-orienteering requires training designed to improve both relevant physiological characteristics and orienteering skills, which should become the focus of future interdisciplinary research on this complex sport. [ABSTRACT FROM AUTHOR]

Although it was reported both rest and physical activity can alleviate cognitive fatigue to some extent, there is no direct scientific evidence determining which approach is more effective. This study aimed to investigate the effect of moderate-intensity aerobic exercise on the alleviation of cognitive fatigue. A 30-min TloadDback task was used to induce cognitive fatigue in 20 healthy adults, and 12-min quiet rest and moderate-intensity aerobic exercise were performed in random order. During the cognitive task, standard deviation of the NN interval (SDNN), total frequency (TP, 0–0.4 Hz) and very low frequency (VLF, 0–0.15 Hz) of heart rate variability increased significantly. The blink duration and number, fixation number, saccade amplitude and number increased significantly with time, while fixation duration and pupil size decreased significantly. After 12-min intervention protocols, the participants' feeling of fatigue, vigour and boredom recovered significantly. The recovery of fixation duration was better after quiet rest, while the pupil size was significantly larger after aerobic exercise. It was found that both quiet rest and aerobic exercise can alleviate cognitive fatigue, but aerobic exercise may be more effective in the recovery of arousal levels. [ABSTRACT FROM AUTHOR]

We aimed to investigate the impact of smartphone use during intertrial intervals within a distributed practice regime on mental fatigue, performance, and learning of a balance motor skill. One hundred and thirty-six participants were randomly divided into two groups: the smartphone use group (SMARTPHONE) and the control group (CONTROL). The SMARTPHONE accessed social media during the rest periods within a distributed practice of a balance task, whereas the CONTROL rested passively during the rest periods. The participants practiced the toe-touch task. The participants underwent a pretest consisting of one trial. Subsequently, the participants were engaged in practice, completing six trials interspersed with 2-min intervals of either rest or smartphone use. Following the practice phase, a posttest was conducted, and after 24 hr, we administered a retention test and a transfer test. The number of touches and the number of errors (contacting the ground with the free leg to regain balance) were performance measures. We evaluated the participants' mental fatigue after the practice session using a visual analog scale. The groups demonstrated similar mental fatigue after practice. Our results suggest that using social media on smartphones during rest periods within a distributed practice impairs performance but not motor learning. [ABSTRACT FROM AUTHOR]

Recent work demonstrates that those who regularly play action video games (AVGs) consistently outperform non‐gamer (NG) controls on tests of various cognitive abilities. AVGs place high demands on several cognitive functions and are often engaged with for long periods of time (e.g., over 2 h), predisposing players to experiencing cognitive fatigue. The detrimental effects of cognitive fatigue have been widely studied in various contexts where accurate performance is crucial, including aviation, military, and sport. Even though AVG players may be prone to experiencing cognitive fatigue, this topic has received little research attention to date. In this study, we compared the effect of a cognitively fatiguing task on the subsequent cognitive performance of action video game players and NG control participants. Our results indicated AVGs showed superior spatial working memory and complex attention abilities while showing no difference from NGs on simple attention performance. Additionally, we found that our cognitive fatigue and control interventions did not differentially affect the cognitive performance of AVGs and NGs in this study. This pre‐registered study provides evidence that AVGs show superior cognitive abilities in comparison to a non‐gaming population, but do not appear more resilient to cognitive fatigue. [ABSTRACT FROM AUTHOR]

We conducted two studies to evaluate the construct validity, short term test-retest reliability, and sensitivity to mental fatigue of the Stroop task when used with older adults. In Study 1, 40 participants visited our lab on two separate days. On the first visit, they took five screening scales, and we measured their height and body mass. On the second visit, they completed the Stroop task twice with a 30-minute interval between assessments. In Study 2, 15 different participants took a 30-minute Flanker/Reverse Flanker task during the interval between the two administrations of the Stroop tasks and they gave subjective ratings of their mental fatigue on the Visual Analogue Scale (VAS) prior to taking either of the Stroop tasks. In Study 1, participants showed a ceiling effect on the Stroop accuracy measure, there was strong concurrent validity for the Stroop with significant score differences between the Stroop's congruent and incongruent conditions (p <.001), and there was excellent response time reliability (ICC = 0.926) on day two when participants took the Stroop twice within a 30-minute inter-test interval. However, there were significant test-retest performance differences with respect to cognitive inhibition (p <.001). In Study 2, mental fatigue from the Flanker/Reverse Flanker test resulted in a significantly worse second Stroop performance (p =.045). We concluded that the Stroop task demonstrated strong concurrent validity and response time reliability among older adults, but it showed sensitivity to mental fatigue, and repeated administrations within the short 30-minute test-retest interval revealed that the most important Stroop measure (cognitive inhibition) was unreliable. We discuss the implications of these findings. [ABSTRACT FROM AUTHOR]

Mental fatigue (MF) and hypoxia impair cognitive performance through changes in brain hemodynamics. We want to elucidate the role of prefrontal cortex (PFC)-oxygenation in MF. Twelve participants (22.9 ± 3.5 years) completed four experimental trials, (1) MF in (normobaric) hypoxia (MF_HYP) (3.800 m; 13.5%O2), (2) MF in normoxia (MF_NOR) (98 m; 21.0%O2), (3) Control task in HYP (CON_HYP), (4) Control in NOR (CON_NOR). Participants performed a 2-back task, Digit Symbol Substitution test and Psychomotor Vigilance task before and after a 60-min Stroop task or an emotionally neutral documentary. Brain oxygenation was measured through functional Near Infrared Spectroscopy. Subjective feelings of MF and physiological measures (heart rate, oxygen saturation, blood glucose and hemoglobin) were recorded. The Stroop task resulted in increased subjective feelings of MF compared to watching the documentary. 2-back accuracy was lower post task compared to pre task in MF_NOR and CON_NOR, while no differences were found in the other cognitive tasks. The fraction of inspired oxygen did not impact feelings of MF. Although performing the Stroop resulted in higher subjective feelings of MF, hypoxia had no effect on the severity of self-reported MF. Additionally, this study could not provide evidence for a role of oxygenation of the PFC in the build-up of MF. [ABSTRACT FROM AUTHOR]

Background and Objectives: This study focused on the impact of mental fatigue induced by motor imagery on upper limb function, an area with limited research compared to lower limb performance. It aimed to explore how diaphragmatic breathing exercises influence these effects. Materials and Methods: This study included 30 participants, and Group 1 participated in 12 sessions of diaphragmatic breathing exercises under the supervision of a physiotherapist; Group 2 did not receive any intervention. For all the participants, mental fatigue was induced with motor imagery before and after the intervention, and evaluations were performed before and after mental fatigue. Upper extremity functions were evaluated using isometric elbow flexion strength, hand grip strength, upper extremity reaction time and endurance, finger reaction time, the nine-hole peg test, shoulder position sense, light touch-pressure threshold, and two-point discrimination. Results: The study results showed that after mental fatigue, there was a decrease in isometric elbow flexion strength, nondominant hand grip strength, and nondominant upper extremity endurance, and an increase in nondominant tactile sensation (p < 0.05). No changes were found in two-point discrimination, nine-hole peg test time, and position sense on either side (p > 0.05). The effect of mental fatigue on isometric elbow flexion strength and nondominant grip strength showed significant improvement following diaphragmatic breathing exercises (p < 0.05). Conclusions: This study found that mental fatigue from motor imagery can impact elbow flexion, hand grip strength, upper extremity endurance, and tactile sensitivity. Breathing exercises may help improve strength parameters affected by mental fatigue. It is crucial to consider these effects on upper extremity functions in rehabilitation programs. [ABSTRACT FROM AUTHOR]

Context: Induced mental fatigue negatively impacts sport performance and neurocognition. However, it is unclear how induced mental fatigue influences landing biomechanics. The purpose of this study was to examine the influence of mental fatigue on drop landing biomechanics in individuals with and without a concussion history. Design: Crossover design. Methods: Forty-eight (24 per group) recreationally active individuals were matched on age (±3 y), sex, and body mass index (±1 kg/m²). All participants completed an experimental (30-min Stroop task) and control (30-min reading magazines) intervention on separate days separated by a minimum of 24 hours. Drop landings were performed before and after both interventions. Outcomes included peak vertical ground reaction force (vGRF), vertical loading rate (VLR), knee flexion angle, knee abduction angle, external knee flexion moment, external knee abduction moment, and initial ground contact knee flexion and knee abduction angles. Separate 2 (group) x 2 (intervention) between-within analyses of covariance compared drop landing outcomes. Each group's average pre-Stroop and premagazine outcomes were covariates. Results: There was a significant interaction for vGRF (P = .033, ηp²=.097) and VLR (P = .0497, ηp²=.083). The vGRF simple effects were not statistically significantly (P range = .052-.325). However, individuals with a concussion history displayed a medium effect size for greater vGRF post-Stroop compared with their own postmagazine vGRF (mean difference (95% confidence interval [95% CI] = 0.163 (-0.002 to 0.327) bodyweight (BW), p =.052, ηp²=.081. In contrast, the control group displayed a small effect size (mean difference [95% CI] = 0.095 [-0.069 to 0.259] BW, p =.251, ηp²=.029). Individuals with a concussion history displayed greater VLR post-Stroop compared with controls (mean difference [95% CI], 26.29 [6.19 to 46.40] BW/s, P = .012, ηp²=.134) and their own postmagazine values (mean difference [95% CI] = 32.61 [7.80 to 57.42] BW/s, p =.011, ηp²=.135). Conclusion: Mental fatigue leads to greater VLR for individuals with a concussion history. Athletic competition and activities of daily living can increase mental fatigue. Training programs may seek to teach mental fatigue reducing strategies to athletes with a concussion history. [ABSTRACT FROM AUTHOR]

Introduction: Nowadays, the quality of marital relationships and cognitive fatigue is a concept widely used in family and marital studies. Objective: The present study aimed to determine the effectiveness of schema-based cognitive therapy on cognitive fatigue and the quality of marital relationships of married women in the city of Amol. Method: The present research was quasi-experimental with a pretest-posttest design with a control group. The statistical population consisted of all women referring to Navid-e-Aramesh and Tolou-e-Mehr clinics in the city of Amol to receive counseling services concerning family problems in 2022, among them 30 people were selected by the convenience sampling method and were randomly assigned to two experimental and control groups (15 people each group). The Quality of Marital Relationships Questionnaire (1995), the Fatigue Questionnaire (1994), and Young et al.’s Schema-Based Cognitive Therapy Protocol (2003) were used for ten 60-minute sessions for data collection, and multivariate analysis of covariance (MANCOVA) and SPSS software version 22 were used for data analysis. Results: The analysis of covariance (ANCOVA) results demonstrated a significant difference between the scores of the control and experimental groups (P=0.001). In general, schema-based cognitive therapy led to increasing the total score of the quality of marital relationships and decreasing cognitive fatigue. Conclusion: Using cognitive techniques, schema-based cognitive therapy culminates in improving the quality of marital relationships and decreasing cognitive fatigue of married women. Therefore, this program can be recommended as an appropriate intervention to improve marital relationships.

This study examined the psychophysiological responses of players to mental fatigue (MF) during simulated badminton matches. Sixteen badminton athletes (age = 19.06 ± 1.29 years) participated in this study voluntarily. Before starting the measurements, the players were informed about the measurements, and anthropometric measurements were performed. Official badminton competition rules and formats were used. Brunel Mood Scale (BRUMS) responses were recorded before and after the games. At the end of each set, the players' perceived exertion (RPE), visual analogue scale (VAS), and enjoyment scale values were determined. Mental fatigue increased perceived exertion and mental fatigue levels during the match, and at the same time, the enjoyment of badminton players decreased (p<0.05). Based on mood responses, an increase in negative moods, such as anger and fatigue, was observed after MF, whereas a decrease in vigour mood occurred (p<0.05). However, no mood change was observed before or after the match without MF (p>0.05). After the game was played with MF, only a decrease in the feeling of vigour was detected compared to the game without fatigue (p<0.05). The results may help coaches and sports psychologists better understand their athletes and take appropriate measures when necessary. Understanding the effect of MF on athlete performance may help athletes direct their training programs directly. [ABSTRACT FROM AUTHOR]

Perception of Velocity (PV) is the ability to estimate single repetition velocity during resistance training (RT) exercises. The main purpose of the study was to evaluate the effects of Mental Fatigue (MF) on the accuracy of barbell PV. The secondary aims were to evaluate whether MF affected RT performance and ratings of perceived exertion (RPE; OMNI‐RES) in the back squat. Twenty‐four (14 Females, 10 Males) resistance‐trained participants underwent 2 familiarization sessions and 1RM test for the back squat. In two separate sessions, PV was tested for light, medium, and heavy loads in 2 conditions in random order: at rest (REST) and in MF condition (POST‐MF) induced by previous incongruent Stroop color‐word task. MF and Motivation were assessed through visual analog scales (VAS; 0–100) before and after the Stroop task. For each load subjects performed 2 repetitions and reported the RPE value. Mean propulsive velocity (Vr) of the barbell was recorded with a linear encoder, while the perceived velocity (Vp) of the subjects was self‐reported using the Squat‐PV scale. The PV accuracy was calculated through the delta score (ds: Vp–Vr). Following the Stroop task MF increased significantly (p < 0.001; F (1, 23) = 52.572), while motivation decreased (p < 0.05; F (1, 23) = 7.401). Ds, Vr, and RPE did not show significant differences between conditions (p > 0.05) for the three loads analyzed. MF induced by previous demanding cognitive task did not affect PV accuracy. Furthermore, subjects maintained unchanged both RT performance and RPE values associated with each load, even when mentally fatigued. Highlights: Prior demanding cognitive task such as 45‐min of incongruent Stroop color‐word task induces MF.The perception of barbell velocity is a stable subjective parameter that remains unchanged even if the practitioners are mentally fatigued.MF does not affect the ability to achieve target velocities and the RPE values experienced for a given load. [ABSTRACT FROM AUTHOR]

Cognitive fatigue is a major symptom of Multiple Sclerosis (MS), from the early stages of the disease. This study aims to detect if brain microstructure is altered early in the disease course and is associated with cognitive fatigue in people with MS (pwMS) compared to matched healthy controls (HC). Recently diagnosed pwMS (N = 18, age < 45 years old) with either a Relapsing–Remitting or a Clinically Isolated Syndrome course of the disease, and HC (N = 19) matched for sex, age and education were analyzed. Quantitative multiparameter maps (MTsat, PD, R1 and R2*) of pwMS and HC were calculated. Parameters were extracted within the normal appearing white matter, cortical grey matter and deep grey matter (NAWM, NACGM and NADGM, respectively). Bayesian T-test for independent samples assessed between-group differences in brain microstructure while associations between score at a cognitive fatigue scale and each parameter in each tissue class were investigated with Generalized Linear Mixed Models. Patients exhibited lower MTsat and R1 values within NAWM and NACGM, and higher R1 values in NADGM compared to HC. Cognitive fatigue was associated with PD measured in every tissue class and to MTsat in NAWM, regardless of group. Disease-specific negative correlations were found in pwMS in NAWM (R1, R2*) and NACGM (R1). These findings suggest that brain microstructure within normal appearing tissues is already altered in the very early stages of the disease. Moreover, additional microstructure alterations (e.g. diffuse and widespread demyelination or axonal degeneration) in pwMS may lead to disease-specific complaint of cognitive fatigue. [ABSTRACT FROM AUTHOR]

The objective of this study was to analyze the effect of mental fatigue on mean propulsive velocity (MPV), countermovement jump (CMJ), 100, and 200-m dash performance in college sprinters. A total of 16 male athletes of sprint events (100 and 200-m dash) participated in this study. Each participant underwent two baseline visits and then running under the three experimental conditions. Assessments (MPV and CMJ) occurred both before and after either smartphone use (SMA) or Stroop task (ST), or watching a documentary TV show about the Olympic Games (CON). Then, the athletes ran the simulated race (i.e. the 100 and 200-m dash). There was no condition (p > 0.05) or time effect (p > 0.05) for MPV, CMJ, 100-m, or 200-m dash performance. In conclusion, the present study results revealed no mental fatigue effect induced by SMA or ST on neuromuscular, 100-m or 200-m dash performance in male college sprinters. [ABSTRACT FROM AUTHOR]

Purpose: Cancer-related fatigue (CRF) is a common side effect of cancer and cancer treatment that significantly impairs the quality of life and can persist for years after treatment completion. Although fatigue is often associated with cancer treatment, it is also a result of the disease itself, even before intervention. CRF at the time of diagnosis may affect treatment timing or completion and is a consistent predictor of post-treatment fatigue at any time. The mechanisms underlying CRF are multidimensional and not well understood, particularly at the time of diagnosis. Methods: Sixty-five breast cancer patients at the time of diagnosis were included. The participants completed self-assessment questionnaires about CRF, sleep disturbances, and emotional symptoms and wore an accelerometer to assess levels of spontaneous physical activity and sleep quality. During the experimental session, the participants underwent cognitive, neuromuscular, and exercise metabolism evaluations. Results: Using augmented backward elimination regression, this study found that emotional symptoms and perceived sleep disturbances were the strongest predictors of CRF (adjusted r2 = 0.51). Neuromuscular fatigability and sleep disturbance were also associated with physical dimensions, whereas cognitive performance was associated with cognitive dimensions. Conclusion: At the time of diagnosis, emotional and cognitive dimensions are over-represented compared to the general population, and specific subdimensions have specific predictors that support the idea of distinct mechanisms. Evaluating CRF subdimensions and their potential mechanisms at the time of diagnosis would be particularly relevant for identifying high-risk patients and offering them appropriate interventions. Trial registration: This study was registered at ClinicalTrials.gov (NCT04391543) in May, 2020. [ABSTRACT FROM AUTHOR]

Mental fatigue is a commonplace human experience which is the focus of a growing body of research. Whilst researchers in numerous disciplines have attempted to uncover the origins, nature, and effects of mental fatigue, the literature is marked by many contradictory findings. We identified two major methodological problems for mental fatigue research. First, researchers rarely use objective measures of mental fatigue. Instead, they rely heavily on subjective reports as evidence that mental fatigue has been induced in participants. We aimed to develop a task which led to not only a subjective increase in mental fatigue, but a corresponding performance decrement in the mentally fatiguing task as an objective measure. Secondly, current mental fatigue paradigms have low ecological validity – in most prior studies participants have been fatigued with a single repetitive task such as the n-back or Stroop. To move towards a more ecologically valid paradigm, our participants undertook a battery of diverse cognitive tasks designed to challenge different aspects of executive function. The AX-CPT, n-back, mental rotation, and visual search tasks were chosen to challenge response inhibition, working memory, spatial reasoning, and attention. We report results from 45 participants aged 19 to 63 years who completed a two-hour battery comprising four different cognitive tasks. Subjective fatigue ratings and task performance were measured at the beginning and end of the battery. Our novel method resulted in an increase in subjective ratings of fatigue (p < 0.001) and a reduction in task performance (p = 0.008). Future research into mental fatigue may benefit from using this task battery. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos de Psicología del Deporte is the property of Cuadernos de Psicologia del Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Experts have highlighted the importance of coaches knowing the level of mental fatigue (MF) induced by different tasks. This study aimed to compare the mentally fatiguing nature of cognitive, physical, and combined tasks and, additionally, assess the effect of different moderating variables on MF. Twenty-three physically active (16 males: Mage = 24 years; seven females: Mage = 22.57 years) participants performed three experimental sessions: (a) physically fatiguing: 30 min of cycloergometer work (at 65%-75% of maximum heart rate), (b) mentally fatiguing: 30 min of an incongruent Stroop task, and (c) mixed fatiguing: 30 min of combining the physically and mentally fatiguing protocols. Subjective MF (visual analog scale), reaction time (psychomotor vigilance task), and cognitive performance (Stroop) were measured throughout the different protocols. Results showed significant increments in subjective MF after all tasks, with the mental and mixed protocols showing significantly higher increases. Only the mentally fatiguing protocol caused significant impairments in reaction time. No significant effects of sex, years of experience, or degree of mental toughness were observed. These results suggest that the use of all these tasks, and especially the mentally fatiguing exercises, should be avoided immediately prior to competitions due to the negative consequences of MF on performance. Moreover, this effect seems to be independent of the sex, years of experience, or mental toughness of athletes. [ABSTRACT FROM AUTHOR]

Abstract Introduction According to the 11th Revision of the International Classification of Diseases, burnout is defined as a syndrome resulting from chronic work-related stress that has not been successfully managed. Burnout is increasingly prevalent amongst medical students and has been shown to lead to worsened academic engagement, feelings of inadequacy, poor mental health and increased risk of withdrawal from the course. The aim of this study was to explore the experience of burnout amongst early year medical students and evaluate the perceived impact of a reflection-based intervention on their awareness and experience of burnout. Methods The reflection-based intervention comprised two tutorials covering the presentation, drivers, impact and management strategies for burnout syndrome. These were introduced into the second-year medical curriculum at Imperial College London. As part of the reflection-based intervention, students were invited to complete an anonymous Qualtrics form three times during the academic year. This included the Shirom-Melamed Burnout Measure (SMBM) and a free-text question prompting the student to consider their stressors at the time of completing the intervention. The former is composed of 14-questions measuring the extent of feelings or behaviours suggestive of burnout, divided into three categories: physical fatigue, cognitive weariness and emotional exhaustion. At the end of the academic year, students were invited to participate in an online focus group to further explore their experience of burnout and their perceived value of the reflection-based intervention. Results of the SMBM were explored descriptively; free-text questions and the focus group transcript were analysed using inductive thematic analysis. Results A total of 59 submissions for the reflection-based intervention were analysed: 26 students participated and consented in the first round, 8 in the second and 25 in the third round. Overall median burnout scores were 4 (IQR 3–5), 2 (IQR 1–4) and 3 (IQR 2–5) in each round of the SMBM, respectively. A total of 8 (30.8%) met the threshold for severe burnout (≥ 4.4) in round 1 of the questionnaire, zero in the second round and 4 (16%) in the third round. Physical and cognitive fatigue showed higher median scores than emotional exhaustion in every round. Four students participated in the focus group, which had two sections. The first was reflecting on burnout in medical school and the intervention, which revealed four themes: (1) indicators of burnout (often insidious, but may involve lack of energy and motivation, or changes in perceived personality); (2) perceived drivers of burnout (perceived expectation that medical school is supposed to be challenging and consistent prioritisation of work over wellbeing); (3) working habits of medical students (unachievable self-expectations and feelings of guilt when not working); (4) value of the intervention (the teaching and reflection-based intervention prompted students to identify signs of burnout in themselves and consider management strategies). The second section included considerations for implementing burnout interventions into the medical school curriculum, which revealed three themes: (1) desire to learn about burnout (students hoped to gain insight into burnout and methods of prevention as part of their curriculum); (2) importance of community (group interventions and the involvement of Faculty helped students feel less isolated in their experiences); (3) feasibility of interventions (sustainable interventions are likely to be those that are efficient, such as using multiple-choice questions, and with allocated periods in their timetable). Conclusion Second-year medical students demonstrated symptoms and signs of burnout, including exhaustion, lack of motivation and changes in personality. They also expressed a desire to gain greater awareness of burnout and insight into preventative strategies within the medical curriculum. Whilst certain drivers of burnout can be prevented by students themselves through adequate prevention strategies, many remain systemic issues which require curriculum-level change to be effectively addressed. The students found that the reflection-based intervention was effective at improving their perception of burnout and a convenient tool to use, which could be implemented more widely and continued longer-term throughout medical school.

The objective of this study was to analyze the effect of anodal transcranial direct current stimulation (a-tDCS) over the motion-sensitive midtemporal area on perceptual–cognitive skills (visuomotor and basketball decision-making skills) in mentally fatigued basketball players. A total of 20 male basketball players were recruited. This was a randomized, double-blinded, and counterbalanced crossover study with two experimental conditions: a-tDCS and Sham. The participants completed the basketball decision-making task and visuomotor skill after performing a 60-min sport-based videogame task with anodal (i.e., a-tDCS) or placebo (Sham) stimulation over the motion-sensitive middle temporal area. Worse response time was observed in visuomotor skill for Sham than a-tDCS postexperiment (p <.05). There was no main condition effect for accuracy of visuomotor skill (p >.05). There was more impairment in accuracy and response time in basketball decision-making skills for the Sham condition than a-tDCS (p <.05). Notably, a-tDCS over the motion-sensitive middle temporal area removed the negative effects of mental fatigue on perceptual–cognitive skills. [ABSTRACT FROM AUTHOR]

Purpose: Several mechanisms have been proposed to explain how mental fatigue degrades sport performance. In terms of endurance performance, a role for an increased perceived exertion has been demonstrated. Using electroencephalography and, more specifically, the movement-related cortical potential (MRCP), the present study explored the neural mechanisms that could underlie the mental fatigue–associated increase in perceived exertion. Methods: Fourteen participants (age, 23 ± 2 yr; 5 women, 9 men) performed one familiarization and two experimental trials in a randomized, blinded, crossover study design. Participants had to complete a submaximal leg extension task after a mentally fatiguing task (EXP; individualized 60-min Stroop task) or control task (CON; documentary). The leg extension task consisted of performing 100 extensions at 35% of 1 repetition maximum, during which multiple physiological (heart rate, electroencephalography) and subjective measures (self-reported feeling of mental fatigue, cognitive load, behand motivation, ratings of perceived exertion) were assessed. Results: Self-reported feeling of mental fatigue was higher in EXP (72 ± 18) compared with CON (37 ± 17; P < 0.001). A significant decrease in flanker accuracy was detected only in EXP (from 0.96 ± 0.03% to 0.03%; P < 0.05). No significant differences between conditions were found in MRCP characteristics and perceived exertion. Specifically in EXP, alpha wave power increased during the leg extension task (P < 0.01). Conclusions: Mental fatigue did not impact the perceived exertion or MRCP characteristics during the leg extension task. This could be related to low perceived exertion and/or the absence of a performance outcome during the leg extension task. The increase in alpha power during the leg extension task in EXP suggests that participants may engage a focused internal attention mechanism to maintain performance and mitigate feelings of fatigue. [ABSTRACT FROM AUTHOR]

Cognitive fatigue, a state of reduced mental capacity arising from prolonged cognitive activity, poses significant challenges in various domains, from road safety to workplace productivity. Accurately detecting and mitigating cognitive fatigue is crucial for ensuring optimal performance and minimizing potential risks. This paper presents a comprehensive survey of the current landscape in cognitive fatigue detection. We systematically review various approaches, encompassing physiological, behavioral, and performance-based measures, for robust and objective fatigue detection. The paper further analyzes different challenges, including the lack of standardized ground truth and the need for context-aware fatigue assessment. This survey aims to serve as a valuable resource for researchers and practitioners seeking to understand and address the multifaceted challenge of cognitive fatigue detection. [ABSTRACT FROM AUTHOR]

Introduction: Nowadays, the quality of marital relationships and cognitive fatigue is a concept widely used in family and marital studies. Objective: The present study aimed to determine the effectiveness of schema-based cognitive therapy on cognitive fatigue and the quality of marital relationships of married women in the city of Amol. Method: The present research was quasi-experimental with a pretest-posttest design with a control group. The statistical population consisted of all women referring to Navid-e-Aramesh and Toloue-Mehr clinics in the city of Amol to receive counseling services concerning family problems in 2022, among them 30 people were selected by the convenience sampling method and were randomly assigned to two experimental and control groups (15 people each group). The Quality of Marital Relationships Questionnaire (1995), the Fatigue Questionnaire (1994), and Young et al.’s Schema-Based Cognitive Therapy Protocol (2003) were used for ten 60-minute sessions for data collection, and multivariate analysis of covariance (MANCOVA) and SPSS software version 22 were used for data analysis. Results: The analysis of covariance (ANCOVA) results demonstrated a significant difference between the scores of the control and experimental groups (P=0.001). In general, schema-based cognitive therapy led to increasing the total score of the quality of marital relationships and decreasing cognitive fatigue. Conclusion: Using cognitive techniques, schema-based cognitive therapy culminates in improving the quality of marital relationships and decreasing cognitive fatigue of married women. Therefore, this program can be recommended as an appropriate intervention to improve marital relationships. [ABSTRACT FROM AUTHOR]

Mental fatigue (MF) has been shown to acutely impair the psychological responses and endurance running performance of orienteers. This study aimed to explore MF levels experienced by orienteers during a 4‐day competition preparation camp that consisted of simulated sprint, middle‐distance, long‐distance, relay and night races. Eleven national junior orienteers participated in the study (age: 15–17 years, height: 1.69 ± 0.07 m and body mass: 59.9 ± 5.22 kg). Subjective ratings of MF, motivation, stress, physical fatigue (PF) and tiredness were measured using a 100‐mm visual analogue scale. The Brunel Mood Scale (BRUMS) was utilized to assess the mood state of the orienteers. The self‐report measures were taken within 30 min of waking, immediately after the post‐training session, and after 24 and 48 h following the final training session. The pre–post orienteering training combined analysis showed that there was a moderate increase in perceived MF (ES = 1.06 [0.66, 1.45]), PF (ES = 1.07 [0.69, 1.45]) and BRUMS fatigue (ES = 0.74 [0.4, 1.1]) after orienteering training. At 48 h post the final training session, MF remained moderately elevated (ES = 0.86 [−0.07, 1.75]), while PF also remained elevated to a small extent (ES = 0.46 [−0.46, 1.39]) compared to the pre‐training values. A moderate impairment was still observed in BRUMS vigor (ES = −1.02 [−1.65, −0.36]), but BRUMS confusion scores were moderately lower (ES = −0.85 [−1.71, 0.04]) than pre‐training values. This study found that orienteering training induced acute MF, persisting for at least 48 h after the final session. Highlights: National junior orienteers experienced perceived mental fatigue during an orienteering training camp, and recovery of psychological responses was incomplete after 48 h.There was a moderate correlation between changes in perceived mental fatigue and physical fatigue during the orienteering training camp, suggesting that while being related they represent distinct constructs of fatigue.Perceived mental fatigue did not recover to its pre‐training value on the following training day, suggesting a progressive accumulation effect that persisted until the completion of the training camp.After the training camp, the ratings of perceived mental fatigue, stress, and physical fatigue, as well as the scores from the Brunel Mood Scale (vigor and fatigue), remained impaired for 48 h compared to their pre‐training value. [ABSTRACT FROM AUTHOR]

The objective of this study was to analyze the effect of mental fatigue from playing videogame immediately prior matches during a simulated congested match schedule (SCMS) on decision-making performance in professional soccer players. Sixteen players participated were volunteers in this study. The participants performed four simulated soccer matches (24-h of interval between matches) during a SCMS. The videogame-induced mental fatigue was performed 20-min prior each match. Decision-making skill assessments were obtained before and after 60-min playing sport-based videogame. The two-way Anova was used to analyze day (1 versus 2 versus 3 versus 4) x time (pre-versus post-videogame) interaction for decision-making skill. It was not observed day x time interaction (F(3, 90) = 0.41; p = 0.73; ηp2 = 0.002), day (F(1, 30) = 0.38; p = 0.76; ηp2 = 0.004) or time (F(1, 30) = 0.25; p = 0.90; ηp2 = 0.002) main effects for decision-making accuracy. There was a significant day x time interaction for response time of decision-making skill (F(3, 90) = 12.1; p = 0.02; ηp2 = 0.09). Impaired response time in post-videogame assessments when compared to pre-videogame for all days (p < 0.05), with a greater impairment on day 3 than days 1 and 2 (p < 0.05). In conclusion, results showed that mental fatigue caused by sport-based videogame immediately prior matches during a SCMS impaired decision-making skill in professional soccer players. [ABSTRACT FROM AUTHOR]

Introduction: According to the 11th Revision of the International Classification of Diseases, burnout is defined as a syndrome resulting from chronic work-related stress that has not been successfully managed. Burnout is increasingly prevalent amongst medical students and has been shown to lead to worsened academic engagement, feelings of inadequacy, poor mental health and increased risk of withdrawal from the course. The aim of this study was to explore the experience of burnout amongst early year medical students and evaluate the perceived impact of a reflection-based intervention on their awareness and experience of burnout. Methods: The reflection-based intervention comprised two tutorials covering the presentation, drivers, impact and management strategies for burnout syndrome. These were introduced into the second-year medical curriculum at Imperial College London. As part of the reflection-based intervention, students were invited to complete an anonymous Qualtrics form three times during the academic year. This included the Shirom-Melamed Burnout Measure (SMBM) and a free-text question prompting the student to consider their stressors at the time of completing the intervention. The former is composed of 14-questions measuring the extent of feelings or behaviours suggestive of burnout, divided into three categories: physical fatigue, cognitive weariness and emotional exhaustion. At the end of the academic year, students were invited to participate in an online focus group to further explore their experience of burnout and their perceived value of the reflection-based intervention. Results of the SMBM were explored descriptively; free-text questions and the focus group transcript were analysed using inductive thematic analysis. Results: A total of 59 submissions for the reflection-based intervention were analysed: 26 students participated and consented in the first round, 8 in the second and 25 in the third round. Overall median burnout scores were 4 (IQR 3–5), 2 (IQR 1–4) and 3 (IQR 2–5) in each round of the SMBM, respectively. A total of 8 (30.8%) met the threshold for severe burnout (≥ 4.4) in round 1 of the questionnaire, zero in the second round and 4 (16%) in the third round. Physical and cognitive fatigue showed higher median scores than emotional exhaustion in every round. Four students participated in the focus group, which had two sections. The first was reflecting on burnout in medical school and the intervention, which revealed four themes: (1) indicators of burnout (often insidious, but may involve lack of energy and motivation, or changes in perceived personality); (2) perceived drivers of burnout (perceived expectation that medical school is supposed to be challenging and consistent prioritisation of work over wellbeing); (3) working habits of medical students (unachievable self-expectations and feelings of guilt when not working); (4) value of the intervention (the teaching and reflection-based intervention prompted students to identify signs of burnout in themselves and consider management strategies). The second section included considerations for implementing burnout interventions into the medical school curriculum, which revealed three themes: (1) desire to learn about burnout (students hoped to gain insight into burnout and methods of prevention as part of their curriculum); (2) importance of community (group interventions and the involvement of Faculty helped students feel less isolated in their experiences); (3) feasibility of interventions (sustainable interventions are likely to be those that are efficient, such as using multiple-choice questions, and with allocated periods in their timetable). Conclusion: Second-year medical students demonstrated symptoms and signs of burnout, including exhaustion, lack of motivation and changes in personality. They also expressed a desire to gain greater awareness of burnout and insight into preventative strategies within the medical curriculum. Whilst certain drivers of burnout can be prevented by students themselves through adequate prevention strategies, many remain systemic issues which require curriculum-level change to be effectively addressed. The students found that the reflection-based intervention was effective at improving their perception of burnout and a convenient tool to use, which could be implemented more widely and continued longer-term throughout medical school. [ABSTRACT FROM AUTHOR]

Purpose: Mental fatigue is emerging as an important consideration for elite sporting performance, yet it is rarely monitored. The present study assessed changes in mental fatigue in professional team-sport athletes across 2 seasons and examined the relationship between mental fatigue and other athlete self-report measures of well-being. Methods: Elite netballers contracted to all teams competing in Australia's premier professional netball competition during the 2018 and 2019 seasons (N = 154) participated. Using 5-point Likert scales, mental fatigue, fatigue (physical), tiredness, sleep quality, stress, mood, and motivation were assessed daily across 2 seasons composed of 14 round and finals series. Results: The ratings of mental fatigue significantly changed during both seasons. In 2018, lower ratings of mental fatigue were reported in round 1 versus 3, 4, 6, 8, and 14; round 7 versus 6; and round 6 versus 10 (P <.05). In 2019, lower ratings of mental fatigue were identified for round 1 versus 3, 9, 10 to 14, and semifinal; round 2 versus 10 to 13; and 5 versus 10 to 12 (P <.05). Ordinal regression revealed significant differences between mental fatigue and physical fatigue (P <.001), tiredness (P <.001), stress (P <.001), mood (P <.001), and motivation (P <.05). Conclusions: The present study found mental fatigue to significantly fluctuate across a season in elite netballers. Moreover, perceived mental fatigue differed from physical fatigue, tiredness, stress, mood, and motivation. The data impress the need for mental fatigue to be included as an independent measure of athlete well-being. Monitoring of mental fatigue can allow practitioners to implement strategies to manage its influence on performance. [ABSTRACT FROM AUTHOR]

This study verifies the prolonged use effect of a sport-based video game (SBV) on basketball players' visuomotor performance. Fourteen male national-level basketball players (24.3 ± 4.1 years; experience time: 6.5 ± 1.9 years) performed two baseline visits and two experimental conditions in a randomised and counterbalanced crossover study. They completed a baseline visuomotor task with and without a ball and were familiarised with the mental fatigue assessment. The experimental conditions consisted of playing an SBV and watching a documentary as control (CON) lasting 60-min each. Before and after experimental conditions, the participants performed a visuomotor task and response subjective rating of mental fatigue indicator measures (i.e., Visual Analogue Scale [VAS]), Stroop Test (i.e., accuracy and response time), and theta band from electroencephalogram. Accuracy decreased, and response time increased on visuomotor tasks with and without the ball, only for the SBV condition (p < 0.05). Subjective rating of mental fatigue (i.e., VAS), the response time on Stroop task, and theta band increased only for the SBV condition (p < 0.05). Mental fatigue induced by prolonged use of SBV impairs visuomotor performance in male basketball players, decreasing accuracy and significantly increasing response time. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Tikrit University for Humanities is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The prevalence of mental fatigue is a noteworthy phenomenon that can affect individuals across diverse professions and working routines. This paper provides a comprehensive dataset of physiological signals obtained from 23 participants during their professional work and questionnaires to analyze mental fatigue. The questionnaires included demographic information and Chalder Fatigue Scale scores indicating mental and physical fatigue. Both physiological signal measurements and the Chalder Fatigue Scale were performed in two sessions, morning and evening. The present dataset encompasses diverse physiological signals, including electroencephalogram (EEG), blood volume pulse (BVP), electrodermal activity (EDA), heart rate (HR), skin temperature (TEMP), and 3-axis accelerometer (ACC) data. The NeuroSky MindWave EEG device was used for brain signals, and the Empatica E4 smart wristband was used for other signals. Measurements were carried out on individuals from four different occupational groups, such as academicians, technicians, computer engineers, and kitchen workers. The provision of comprehensive metadata supplements the dataset, thereby promoting inquiries about the neurophysiological concomitants of mental fatigue, autonomic activity patterns, and the repercussions of a cognitive burden on human proficiency in actual workplace settings. The accessibility of the aforementioned dataset serves to facilitate progress in the field of mental fatigue research while also laying the groundwork for the creation of customized fatigue evaluation techniques and interventions in diverse professional domains.

Background and Objectives: This study focused on the impact of mental fatigue induced by motor imagery on upper limb function, an area with limited research compared to lower limb performance. It aimed to explore how diaphragmatic breathing exercises influence these effects. Materials and Methods: This study included 30 participants, and Group 1 participated in 12 sessions of diaphragmatic breathing exercises under the supervision of a physiotherapist; Group 2 did not receive any intervention. For all the participants, mental fatigue was induced with motor imagery before and after the intervention, and evaluations were performed before and after mental fatigue. Upper extremity functions were evaluated using isometric elbow flexion strength, hand grip strength, upper extremity reaction time and endurance, finger reaction time, the nine-hole peg test, shoulder position sense, light touch-pressure threshold, and two-point discrimination. Results: The study results showed that after mental fatigue, there was a decrease in isometric elbow flexion strength, nondominant hand grip strength, and nondominant upper extremity endurance, and an increase in nondominant tactile sensation (p < 0.05). No changes were found in two-point discrimination, nine-hole peg test time, and position sense on either side (p > 0.05). The effect of mental fatigue on isometric elbow flexion strength and nondominant grip strength showed significant improvement following diaphragmatic breathing exercises (p < 0.05). Conclusions: This study found that mental fatigue from motor imagery can impact elbow flexion, hand grip strength, upper extremity endurance, and tactile sensitivity. Breathing exercises may help improve strength parameters affected by mental fatigue. It is crucial to consider these effects on upper extremity functions in rehabilitation programs.

Today, many factors affect the reduction of performance, efficiency and effectiveness of managers in knowledge-based organizations, one of which is the cognitive fatigue of managers. The cognitive fatigue of managers refers to the issue that the manager's mind has lost its ability due to the reduction of intellectual capacity and rational ability due to conflict with non-functional, secondary and unimportant issues and in performing its main tasks such as decision-making and planning. Rezi works in a weak way. Therefore, the current research was conducted with the aim of recognizing and understanding the phenomenon of cognitive fatigue of managers of knowledge-based organizations and analyzing the influencing factors and consequences with the FCM method. This research is based on a mixed method and based on qualitative and quantitative research, which, from the point of view of philosophy, is included in the category of inductive comparative research. Therefore, the current research is an exploratory research in terms of practical purpose in terms of gathering information. The statistical population of the research is experts and experts in knowledge-based organizations, who were selected by purposeful sampling and based on the principle of sufficiency. The tool for collecting information is the qualitative part of the interview and the quantitative part of the questionnaire, whose validity and reliability are respectively determined by using content validity and theoretical validity, intra-coder and extra-coder reliability methods for the interview, and content validity and retest reliability for the questionnaire. It has been confirmed. Qualitative data were analyzed with Atlas.ti software and content analysis and coding method, and quantitative data were analyzed with FCM fuzzy mapping method. The results of this research indicate that being in uncontrollable and stressful situations, job and emotional burnout of managers, and impaired cognitive abilities due to having the highest degree of centrality, are the most important antecedent factors of cognitive fatigue of managers of knowledge-based organizations. . Also, the phenomenon of intellectual freezing, reducing the cognitive flexibility of managers and weakening the analysis ability of managers were identified as the most important factors behind the cognitive fatigue of managers of knowledge-based organizations

Introduction: The prevalence of fatigue in patients with diabetes mellitus (DM) can be as high as 50 %. Physical, mental, and psychosocial components of fatigue negatively impact quality of life (QOL), morbidity and mortality. Several tools have been developed to address fatigue, but none specifically for measuring fatigue in DM. The aim of this study was to assess the impact of diabetes and neuropathy on fatigue using the Norfolk QOL-Fatigue (QOL-F) survey. Methods: 605 adult participants from [Anonymous] were recruited (400 subjects with type 1 or type 2 DM and 205 subjects without diabetes (controls)). All subjects completed the Norfolk QOL-F. Demographics, weight, BMI, and duration of diabetes were obtained. The Norfolk QOL-F, a 35-item validated questionnaire, assesses five domains: subjective fatigue, physical and cognitive fatigue, reduced activities, impaired activities of daily living, and depression. Results: Subjects with DM reported significantly higher fatigue total scores (52.63vs33.89, p

Copyright of Mediterranean Journal of Sport Science (MJSS) is the property of Mediterranean Journal of Sport Science (MJSS) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Elite athletes are reportedly more resistant to mental fatigue and are less negatively influenced by pre-induced mental fatigue. However, such evidence has not been verified in the context of open sports, such as football. This study investigated the effects of pre-induced mental fatigue on tactical behaviour and performance among Brazilian male elite football players under 17 years (n = 18). The System of Tactical Assessment in Soccer (FUT-SAT) was utilised to assess the players' tactical behaviour and performance. A [stratified] sample of players was assessed, with and without pre-induced mental fatigue. The Stroop test was used to induce mental fatigue. The Shapiro–Wilk test was used to verify the distribution of the data, and the paired t and Wilcoxon statistical tests were conducted to compare the paired groups of players. The results showed that players decreased the number of actions in the offensive and defensive phases under the condition of pre-induced mental fatigue. Contrarily, these players increased the efficiency of their actions and consequently improved their tactical performance. This probably occurred because players were more selective in their actions and focused more on the most relevant actions to solve problems when in play. It was concluded that young players could adapt their tactical actions, whether offensive or defensive, under the conditions of pre-induced mental fatigue. [ABSTRACT FROM AUTHOR]

Experiencing mental fatigue (MF) before an orienteering race can lead to a slower completion time. This study aimed to explore the changes in perceived MF, mood and other psychological responses during an orienteering competition. Sixteen national level orienteering athletes (20.8 ± 4.9 years) provided informed consent and completed the online surveys, before and immediately after each race, and 24- and 48-hours post competition (48POST). This study measured MF, physical fatigue, stress, tiredness and motivation using 0–100 Visual Analogue Scale, and the mood was assessed using The Brunel Mood Scale (BRUMS). A moderate to large increase in MF (ES = 0.93 [0.54 to 1.31]), BRUMS fatigue (ES = 0.61 [0.3 to 0.92]), and PF (ES = 1.21 [0.81 to 1.61]) was reported following orienteering races. A small increase in tiredness and BRUMS confusion, and a small decrease in motivation, stress and BRUMS vigour was also reported. There was a delay in recovering from the MF elicited by competition, with a small increase in MF (ES = 0.54 [0.08 to 1.15]) at 48POST compared to the pre-competition value. This study found that orienteers experience MF during competition and have a delayed recovery that can last up to two days after the competition. [ABSTRACT FROM AUTHOR]

This study was conducted to investigate the effect of Gynostemma pentaphyllum extract containing gypenoside L (GPE) on improving the cognitive aspects of fatigue and performance of the motor system. One hundred healthy Korean adults aged 19–60 years were randomized to the treatment (GPE for 12 weeks) and control groups, and efficacy and safety‐related parameters were compared between the two groups. Maximal oxygen consumption (VO2 max) and O2 pulse were significantly higher in the treatment group than in the control group (p = 0.007 and p = 0.047, respectively). After 12 weeks, the treatment group showed significant changes such as decreases in the levels of free fatty acids (p = 0.042). In addition, there were significant differences in the rating of perceived exertion (RPE) (p < 0.05) and value of temporal fatigue between the treatment and control groups on the multidimensional fatigue scale (p < 0.05). Moreover, the level of endothelial nitric oxide synthase (eNOS) in the blood was significantly higher in the treatment group than in the control group (p = 0.047). In summary, oral administration of GPE has a positive effect on resistance to exercise‐induced physical and mental fatigue. [ABSTRACT FROM AUTHOR]

Background: For many years the negative effects of fatigue on performance have been studied. Fatigue can deteriorate different factors in the performance of learned motor skills. This research was undertaken to elucidate the effect of errorless training on the performance of a throwing task in non-fatigued, cognitively fatigued, and physically fatigued conditions. Methods:16 subjects (males: n= 6 and female: n=10) (age mean: 29 ± 5.63) participated In the acquisition phase, the participants performed 5 blocks of 30 trials of a two- step ball throwing task, starting close to the target, and gradually moving away. 48 hours later, the participants first took part in a retention test of 10 throws, and then, after a mental fatigue protocol of 30 minutes of word-color Stroop test, the first transfer test (10 trials) was taken. 48 hours later, the participants made another 10 trials (transfer 2) after the physiological fatigue protocol (maintaining 50% MVC for 2 minutes). Results: The results of ANOVA with repeated measure showed a significant difference between performance in the retention test and the two transfer tests (p

Cognitive fatigue, a state of reduced mental capacity arising from prolonged cognitive activity, poses significant challenges in various domains, from road safety to workplace productivity. Accurately detecting and mitigating cognitive fatigue is crucial for ensuring optimal performance and minimizing potential risks. This paper presents a comprehensive survey of the current landscape in cognitive fatigue detection. We systematically review various approaches, encompassing physiological, behavioral, and performance-based measures, for robust and objective fatigue detection. The paper further analyzes different challenges, including the lack of standardized ground truth and the need for context-aware fatigue assessment. This survey aims to serve as a valuable resource for researchers and practitioners seeking to understand and address the multifaceted challenge of cognitive fatigue detection.

Mental fatigue can significantly impair physical performance during sports practice. However, previous studies have not analyzed the impact of combining High-Intensity Interval Training (HIIT) with a cognitive task on physical performance. In this line, we developed the present research to investigate the specific aspects of mental and physical fatigue as well as the potential impact of combining HIIT with a cognitive task. Therefore, the objective of this study was to compare mental and physical fatigue indicators between single HIIT and an incongruent Stroop task added to the HIIT protocol. A cross-sectional study was conducted with 32 tennis players (25 men and 7 women, mean age = 21.40). Two HIIT sessions were performed: (1) one with the incongruent Stroop task presented during rests, and (2) another without the Stroop task during rests. Mental fatigue, mental load, and wellness were measured. Additionally, mean and maximum heart rate, mean and peak speed, and heart rate variability through RMSSD were recorded using a heart rate monitor. Mann-Whitney U tests and Wilcoxon tests were performed to explore differences between during-session loads and pre- and post-HIITs. The results showed that mixed HIIT with the incongruent Stroop task caused higher increases in mental fatigue (p = 0.04) and the ratio of perceived exertion (p = 0.001) from pre- to post-HIIT. However, no significant differences in external (speed) and internal (heart rate) factors were observed between the protocols. This suggests that subjective feelings of physical exertion increased significantly due to mental fatigue. However, it did not decrease the physical workload during HIIT for tennis players. Therefore, incorporating short periods of the incongruent Stroop task during HIIT could be used to develop tolerance to mental fatigue without a decrease in the workload. [ABSTRACT FROM AUTHOR]