The counteractive effects of interventions addressing mental fatigue on sport-specific performance among athletes: A systematic review with a meta-analysis.

The deleterious consequences of mental fatigue (MF) on athletes in diverse sporting domains have been subject to extensive inquiry. However, the efficacy of interventions to counteract the effects of MF remains largely elusive. This review aims to evaluate the effects of counteractive interventions on the sport-specific performance of mentally fatigued athletes. Moreover, synthesizes the current evidence on which sports effectively counter the detrimental effects of MF with interventions, highlighting potential avenues for upcoming research. A systematic search was executed via Web of Science, Scopus, PubMed, and EBSCOhost, in addition to Google Scholar and references for grey literature. A meta-analysis was executed to compute effect sizes for different interventions with 13 qualified papers. Interventions include transcranial direct current stimulation, person-fit, mindfulness, glucose supplementation, caffeine mouth rinsing, and nature exposure showed potential to mitigate the detrimental effects on sport-specific performance, particularly in shooting accuracy (ES = 0.591; p = 0.001), decision-making accuracy (ES = 0.553; p = 0.006), and reaction time (ES = -0.871; p < 0.001), however, not in completion time (ES = -0.302; p = 0.182). This review underscores the unique roles of self-regulatory resources and directed attention. Nonetheless, a cautious interpretation of the findings is warranted given the paucity of investigations involving potential interventions in numerous other sports, such as volleyball, Australian football, cricket, and boxing.

Depression among older adults in Malaysian daycare centres.

With the older population increasing worldwide, depressive disorder in this cohort is a serious public health problem that contributes to increased healthcare costs and mortality. This study aimed to determine the prevalence of depression among older adults in Malaysia who attended a daycare centre and to identify the relationship between depression and demographic factors. A cross-sectional study was conducted with 159 older adults recruited following screening for mental capacity. The Malay Geriatric Depression Scale questionnaire was distributed among the participants to obtain descriptive data on the symptoms of depression. Some 59.1% of the participants experienced depression. The most common factors associated with depression were being divorced, low education levels and low income. The findings indicate the need to revise and re-evaluate the activities and programmes in daycare centres for older adults in order to objectively cater to their physical and emotional needs.

The effects of functional training on physical fitness and skill-related performance among basketball players: a systematic review.

Background: Evidence suggests that functional training (FT) positively impacts physical fitness and sports performance. However, a systematic review addressing the effects of FT on basketball players remains absent. This systematic review aims to explore the influence of FT on physical fitness and skill-related performance in basketball players. Methods: We searched six databases: Web of Science, Scopus, PubMed, China National Knowledge Infrastructure (CNKI), EBSCOhost, and Google Scholar. The search utilized a combination of keywords related to FT, physical fitness, and basketball. The Eligibility Criteria of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA 2020) guidelines were followed in this systematic review. Results: 11 studies were ultimately included in this review, collectively recruiting 333 basketball players. These studies demonstrated that FT significantly improved muscle strength, linear speed, cardiovascular endurance, flexibility, balance, and muscular endurance. However, the effects of FT on power, change-of-direction speed, and basketball-related performance were inconsistent. Most studies showed FT significantly improves these three variables, but a small number of studies did not find positive effects of FT using specific tests including standing long jump, Sargent jump, touch high, lane agility, lateral shuffle, dribbling line drill, and free-throw tests. Conclusion: FT is an effective training method for enhancing physical fitness including muscle strength, linear speed, cardiovascular endurance, flexibility, balance, and muscular endurance. However, the effects of FT on power, change-of-direction speed, and basketball-related performance were divergent. Some tests were not improved after FT potentially due to the short program lengths and training session durations, varied athletic levels of players examined, and different foci of the FT exercises administered. The collective evidence suggests FT programs, especially the specific exercises prescribed, should be tailored to the desired training objectives. More studies investigating the effects of FT on physical fitness and basketball-related performance with established tests are encouraged in the future to expand the current evidence base. Systematic Review Registration: https://inplasy.com/, Identifier INPLASY202360072.

Systematic Review of Malnutrition Risk Factors to Identify Nutritionally At-Risk Patients With Head and Neck Cancer.

BACKGROUND: Patients with head and neck cancer are prone to malnutrition, which can lead to adverse health outcomes. A review of the literature revealed a lack of systematic reviews addressing risk factors for malnutrition in this population. OBJECTIVES: This study aimed to fill the knowledge gap by identifying risk factors for malnutrition in patients with head and neck cancer. METHODS: A comprehensive search was conducted in PubMed®, Web of Science, Embase®, and Cochrane Library databases, spanning from their inception until June 2023. Three researchers critically evaluated the inclusion and exclusion criteria. Two investigators independently screened the literature and extracted data, resolving any discrepancies through consensus. FINDINGS: This systematic review includes 18 studies. The results indicated that risk factors for malnutrition in patients with head and neck cancer encompass disease-related, genetic, lifestyle, nutritional health, physiologic, psychological, and treatment-related factors.

Effects of a 12-Week Functional Training Program on the Strength and Power of Chinese Adolescent Tennis Players.

BACKGROUND: Functional training is any type of training designed to improve a specific movement or activity for fitness or high performance sports. This study examined the effect of functional training on the strength and power of young tennis players. METHODS: 40 male tennis players were assigned to the functional training group (n = 20; age, 16.7 ± 0.4 years) or the conventional training group (n = 20; age, 16.5 ± 0.6 years). The functional training group received three 60 min sessions per week for 12 weeks, while the conventional training group participated in three sessions per week of mono-strength exercise for 12 weeks. Strength and power were measured according to the International Tennis Federation protocol at baseline, 6 weeks after the intervention, and 12 weeks after the intervention. RESULTS: Both forms of training increased (p < 0.05) push-ups, wall squat test, over medicine ball throw, and standing long jump after 6 weeks of training, and the effect improved further as the 12-week mark approached. Except for the wall squat test (left) at 6 weeks, functional training showed no advantage over conventional training. After an additional 6 weeks of training, all measures of strength and power were better (p < 0.05) in the functional training group. CONCLUSIONS: Improvements in strength and power could occur after as little as 6 weeks of functional training, and 12-week functional training could outperform conventional training in male adolescent tennis players.

The impact of physical activity intervention on perinatal depression: A systematic review and meta-analysis.

BACKGROUND: No meta-analysis has analyzed the effect of physical activity level, period of physical activity intervention, and duration of intervention, on perinatal depression. This study was to evaluate the impact of physical activity intensity, dose, period, and duration on perinatal depression. METHODS: The literature was searched via the PubMed, Embase, Cochrane Library, and Web of Science databases. Weighted mean difference (WMD) or the risk ratio (RR) was used as the effect indicator, and the effect size was represented by the 95 % confidence interval (CI). Subgroup analysis based on the perinatal stage, physical activity intensity, physical activity equivalent, and intervention duration was performed. RESULTS: Totally, 35 studies including 5084 women were included. Physical activity could reduce the incidence and severity of depression in perinatal women. Among depressed women with prenatal depression, low-intensity physical activity, with metabolic equivalents (METs)-min/week being <450, was associated with lower levels of depression. In the general population, the risk of postpartum depression was lower in the physical activity group when the duration of intervention was ≥12 weeks, being II, III stage, and ≥450 METs-min/week. Both low and moderate-intensity physical activity were beneficial to an improved depression severity among depressed women with postpartum depression, and moderate exercise intervention could decrease the risk of postpartum depression in general pregnant women. LIMITATIONS: Different types of physical activities may affect the effectiveness of interventions. CONCLUSION: Our study indicated physical activity specifically targeted at pregnant women could reduce depression risk and severity.

Mindfulness-Based Interventions for the Recovery of Mental Fatigue: A Systematic Review.

Background: There is evidence that mindfulness-based interventions (MBI) can help one to recover from mental fatigue (MF). Although the strength model of self-control explains the processes underlying MF and the model of mindfulness and de-automatization explains how mindfulness training promotes adaptive self-regulation leading to the recovery of MF, a systematic overview detailing the effects of MBI on the recovery of MF is still lacking. Thus, this systematic review aims to discuss the influences of MBI on the recovery of MF. Methods: We used five databases, namely, PubMed, Web of Science, EBSCOhost, Scopus, and China National Knowledge Infrastructure (CNKI) for articles published up to 24 September 2021, using a combination of keywords related to MBI and MF. Results: Eight articles fulfilled all the eligibility criteria and were included in this review. The MBI directly attenuated MF and positively affected the recovery of psychology (attention, aggression and mind-wandering) and sports performance (handgrip, plank exercise and basketball free throw) under MF. However, the interaction did not reach statistical significance for the plank exercise. Therefore, the experience and duration of mindfulness are necessary factors for the success of MBI. Conclusions: mindfulness appears to be most related to a reduction in MF. Future research should focus on improving the methodological rigor of MBI to confirm these results and on identifying facets of mindfulness that are most effective for attenuating MF.

Improving hardiness among university students: A meta-analysis of intervention studies.

Introduction: Increasing the hardiness of students is a crucial objective in higher education. Universities and colleges have created a variety of interventions to improve students' overall hardiness. Methods: In terms of the effects of such interventions, empirical research has shown inconclusive results. This meta-analysis applies 12 effect sizes from 12 independent empirical studies, with a total of 640 participants, to assess the overall impact of interventions on students' hardiness and to test for moderators, in light of the contradictory findings in prior work. The current meta-analysis calculates the standardized mean differences (SMD) of pre-post interventions. The level of study heterogeneity, represented by I 2, was interpreted as small (I 2 ≤ 25%), moderate (25% < I 2 ≤ 50%), substantial (50% < I 2 ≤ 75%), or considerable (I 2 > 75%). Twelve studies met the inclusion criteria and were included in the meta-analysis. Results: The results show that the interventions had a significant positive overall effect on students' hardiness (g = 0.998, k = 12) and show significant heterogeneity among effect sizes. Among the interventions, cognitive-based intervention yielded the largest mean effect size (g = 2.015, k = 5). Furthermore, moderator analyses suggest that the effects of the interventions on students' hardiness are moderated by respondent type, culture, intervention type, research design, years, and duration of intervention. Discussion: We conclude that interventions that promote students' hardiness are officious. Despite the low homogeneity of the results and limitations of this meta-analysis (e.g., a small number of included studies) which might have influenced the findings, the large fail-safe N suggests that these findings are robust. The study examined potential causes of heterogeneity and emphasized the importance of further research in this area.

Effect of Exercise Training on Physical Fitness Among Young Tennis Players: A Systematic Review.

Background: Physical fitness comprises both health- and skill-related components that have been shown to correlate with the competitive ability of the athletes. Competitive ability of the athletes is strongly related to the positive or poor characteristics of physical fitness. Additionally, the adolescent stage is critical for the development of physical fitness. Physical fitness training for young tennis players should receive more attention. However, the current literature is deficient in in-depth reviews of the effects of exercise training on the physical fitness of young tennis players. Objective: This review is aimed to investigate the effects of exercise training on physical fitness among young tennis players. Methods: From October 2020, a comprehensive search was undertaken in four electronic databases (SCOPUS, PubMed, EBSCOhost (SPORTDiscus), and CINAHL Plus) and also on Google Scholar and other sources of gray literature references. The methodological quality of included studies was assessed using the Physiotherapy Evidence Database scale and the over scientific evidence was determined using the best evidence synthesis (BES). This review included only studies that employed an experimental design to assess the physical fitness components of young tennis players. Results: Nine articles on exercise training met all inclusion criteria and were included in this systematic review. The studies were of a high standard of quality. The research findings are relatively credible. The results indicated that speed (n = 8) and agility (n = 8) were the most often investigated performance characteristics in exercise training interventions with young tennis players, followed by power (n = 7), strength (n = 4), and flexibility (n = 1). Exercise training significantly increased the physical fitness of young tennis players in terms of speed and agility. There is a lack of evidence about strength and flexibility. Meanwhile, there is conflicting evidence regarding the effect on power, and yet there is no evidence regarding the effect of exercise training on endurance. Conclusions: This systematic review established a compelling case for the beneficial effects of exercise training interventions on physical fitness in youngtennis players. The review identifies current research gaps (i.e., athlete gender, with a particular emphasis on female athletes) that should be addressed in future experimental studies. Systematic Review Registration: https://www.crd.york.ac.uk/prospero, identifier CRD 42020213145.

Mental Fatigue and Basketball Performance: A Systematic Review.

Mental fatigue (MF) is a psycho-biological state that impairs sports-related performances. Recently, it has been proved that MF can affect basketball performance. However, a systematic overview detailing the influences of MF on basketball performance is still lacking. This study aims to investigate the effects of MF on the physical, technical, tactical, and cognitive performance of basketball. We used the databases of PubMed, Web of Science, SPORTDiscus, Scopes, and CKNI for articles published up to 31 May 2021. The articles included in this study were projected to test whether MF influences basketball athlete performance. Only experimental design studies were selected, and the control condition was without MF. Finally, seven articles fit the inclusion criteria. The results imply that MF impairs the technical aspects of basketball (free throws, three-point shots, and total turnover) and the players' cognitive [take-the-first (TTF) heuristics and decision-making] performance, which results in athletes not using their techniques skillfully and being unable to make practical decisions during critical points in the game. In addition to that, the influences of MF on physical and tactical performance have not been studied. Further studies should look into comprehensive research on the influences of MF on basketball performance, especially on a player's physical and tactical performance. Systematic Review Registration: [https://inplasy.com/] [INPLASY2021100017].

Sensor for prednisolone detection in sports doping / Sensor para detecção de prednisolona no doping esportivo / Sensor para la detección de prednisolona en el dopaje deportivo

ABSTRACT Introduction: Prednisolone causes pro-inflammatory impulses to be inhibited and anti-inflammatory signals to be promoted. As a result, it alters how the body's immune system reacts to certain diseases. The World Anti-Doping Agency, however, has banned SNP and other glucocorticosteroids. An electrochemical sensor can be developed using a gold nanocomposite, polypyrrole nanoparticles and synthesized carbon nanotubes (Au-PPy NPs@CNTs). Objective: Develop an electrochemical sensor to detect prednisolone. Method: Au-PPy NPs@CNTs nanocomposite was chemically synthesized with a modified glassy carbon electrode (GCE) surface. Results: According to SEM data, the nanocomposite was composed of amorphous Au NPs, and PPy NPs deposited in tubes strongly entangled in a CNTs network. The wide linear range and low detection limit of the Au-PPy NPs@CNTs/GCE as prednisolone sensors were attributed to the combined catalytic performance of the Au and PPy NPs@CNTs nanostructures. Conclusion: The results of prednisolone detection in each specimen using the amperometric method indicated good accuracy. The accuracy and precision of Au-PPy NPs@CNTs/GCE for prednisolone detection were explored in blood samples from 5 young athletes aged 20-24 years who used prednisolone tablets (RSD less than 4.25%). In addition to monitoring prednisolone concentrations in athletes' serum, Au-PPy NPs@CNTs/GCE can be used as a reliable prednisolone sensor. Level of evidence II; Therapeutic studies - investigating treatment outcomes.

RESUMO Introdução: A prednisolona faz com que os impulsos pró-inflamatórios sejam inibidos e os sinais anti-inflamatórios sejam promovidos. Como resultado, ela altera a forma como o sistema imunológico do corpo reage a certas doenças. A Agência Mundial Antidoping, no entanto, proibiu o SNP e outros glucocorticoesteroides. Usando um nanocomposto de ouro, nanopartículas de polipirrol e nanotubos de carbono sintetizados (Au-PPy NPs@CNTs), um sensor eletroquímico pode ser desenvolvido. Objetivo: Desenvolver um sensor eletroquímico para detectar a prednisolona. Método: O nanocompósito Au-PPy NPs@CNTs foi sintetizado quimicamente com uma superfície de eletrodo de carbono vítreo modificado (GCE). Resultados: De acordo com dados da SEM, o nanocomposto foi descoberto como sendo composto de Au NPs e NPs de PPy amorfo, depositados em tubos fortemente emaranhados em uma rede de CNTs. O amplo alcance linear e o baixo limite de detecção do Au-PPy NPs@CNTs/GCE como sensores de prednisolona foram atribuídos ao desempenho catalítico combinado das nanoestruturas de Au e PPy NPs@CNTs. Conclusão: Os resultados da detecção de prednisolona em cada espécime usando o método de amperometria indicaram boa precisão. A precisão e a acurácia de Au-PPy NPs@CNTs/GCE para a detecção de prednisolona foram exploradas em amostras de sangue preparadas de 5 atletas jovens de 20 a 24 anos que usaram comprimidos de prednisolona (RSD inferior a 4,25%). Além de monitorar as concentrações de prednisolona no soro dos atletas, Au-PPy NPs@CNTs/GCE pode ser usado como um sensor confiável de prednisolona. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: La prednisolona hace que se inhiban los impulsos proinflamatorios y se promuevan las señales antiinflamatorias. Como resultado, altera la forma en que el sistema inmunológico del cuerpo reacciona a ciertas enfermedades. Sin embargo, la Agencia Mundial Antidopaje ha prohibido el SNP y otros glucocorticosteroides. Utilizando un nanocompuesto de oro, nanopartículas de polipirrol y nanotubos de carbono sintetizados (Au-PPy NPs@CNTs), se puede desarrollar un sensor electroquímico. Objetivo: Desarrollar un sensor electroquímico para detectar la prednisolona. Método: Se sintetizó químicamente el nanocompuesto Au-PPy NPs@CNTs con una superficie de electrodo de carbono vítreo (GCE) modificada. Resultados: Según los datos del SEM, se comprobó que el nanocompuesto estaba compuesto de Au NPs y NPs de PP amorfo y depositados en tubos fuertemente enredados en una red de CNTs. El amplio rango lineal y el bajo límite de detección de Au-PPy NPs@CNTs/GCE como sensores de prednisolona se atribuyeron al rendimiento catalítico combinado de las nanoestructuras de Au y PPy NPs@CNTs. Conclusión: Los resultados de la detección de prednisolona en cada muestra mediante el método amperométrico indicaron una buena precisión. Se exploró la exactitud y precisión de las Au-PPy NPs@CNTs/GCE para la detección de prednisolona en muestras de sangre preparadas a partir de 5 jóvenes atletas de entre 20 y 24 años de edad que utilizaban tabletas de prednisolona (RSD inferior al 4,25%). Además de controlar las concentraciones de prednisolona en el suero de los deportistas, Au-PPy NPs@CNTs/GCE puede utilizarse como un sensor fiable de prednisolona. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.