Journal of Exercise Science & Fitness最新文献

{"title":"Mediating role of physical fitness on the association between diet and health-related quality of life in adolescents","authors":"Alba Solera-Sanchez ,&nbsp;Maria Reyes Beltran-Valls ,&nbsp;Diego Moliner-Urdiales ,&nbsp;Mireia Adelantado-Renau","doi":"10.1016/j.jesf.2024.07.001","DOIUrl":"10.1016/j.jesf.2024.07.001","url":null,"abstract":"<div><h3>Objective</h3><p>The aim of this study was to analyse whether the association between adherence to the Mediterranean diet and health-related quality of life (HRQoL) is mediated by physical fitness components (i.e., cardiorespiratory fitness, lower-limb strength, upper-limb strength and motor competence) in adolescents.</p></div><div><h3>Methods</h3><p>This is a cross-sectional study including mediation analyses. This study involved 181 adolescents (86 girls) aged 15.8 ± 0.3 years recruited from secondary schools and sport clubs located in Castellon (Spain). Adherence to the Mediterranean diet was evaluated using the KIDMED questionnaire. HRQoL was assessed with the KIDSCREEN-10 questionnaire. Cardiorespiratory fitness was assessed using the 20-m shuttle run test. Lower-limb strength was assessed through the standing broad jump test. Upper-limb strength was evaluated using a handgrip dynamometer. Motor competence was assessed using the 4 × 10 m shuttle run test. Mediation analyses were performed for each physical fitness component in order to assess its mediating effect on the association between adherence to the Mediterranean diet and HRQoL. Indirect effects (IE) with confidence intervals (CI) not including zero were interpreted as statistically significant.</p></div><div><h3>Results</h3><p>Cardiorespiratory fitness and lower-limb strength had a mediating effect on the positive association between adherence to the Mediterranean diet and HRQoL (IE = 0.11, 95 % CI = 0.01; 0.27 and IE = 0.07, 95 % CI = 0.01; 0.19). Upper-limb strength and motor competence did not act as mediators in the association between adherence to the Mediterranean diet and HRQoL (IE = 0.00, 95 % CI = −0.04; 0.07 and IE = 0.01, 95 % CI = −0.03; 0.07, respectively).</p></div><div><h3>Conclusion</h3><p>Our findings showed that the positive association of adherence to the Mediterranean diet on adolescents' HRQoL was mediated by physical fitness. Educational and public health strategies aiming to improve Spanish adolescents’ HRQoL should focus on diet and physical fitness.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 369-374"},"PeriodicalIF":2.4,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000546/pdfft?md5=51ba0e4a68f9e7492e389362f0dc0345&pid=1-s2.0-S1728869X24000546-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SARS-CoV-2 infection decreases cardiorespiratory fitness and time-trial performance even two months after returning to regular training — Insights from a longitudinal case series of well-trained kayak athletes","authors":"Shengji Deng ,&nbsp;Mingyue Yin ,&nbsp;Zhili Chen ,&nbsp;Jianfeng Deng ,&nbsp;Zhenyu Wang ,&nbsp;Yuxi Li ,&nbsp;Mengde Lyu ,&nbsp;Boyi Zhang ,&nbsp;Shaoqiang Zhu ,&nbsp;Shenggui Hu ,&nbsp;George P. Nassis ,&nbsp;Yongming Li","doi":"10.1016/j.jesf.2024.05.003","DOIUrl":"https://doi.org/10.1016/j.jesf.2024.05.003","url":null,"abstract":"<div><h3>Objective</h3><p>The aims of this study were to examine the effect of SARS-CoV-2 infection on cardiorespiratory fitness (CRF) and time-trial performance in vaccinated well-trained young kayak athletes.</p></div><div><h3>Methods</h3><p>This is a longitudinal observational study. Sixteen (7 male, 9 female) vaccinated kayakers underwent body composition assessment, maximal graded exercise test, and 1000-m time-trial tests 21.9 ± 1.7 days before and 66.0 ± 2.2 days after the SARS-CoV-2 infection. The perception of training load was quantified with Borg's CR-10 scale before and after the infection return to sport period.</p></div><div><h3>Results</h3><p>There were significant decreases in peak oxygen uptake (−9.7 %; effect size [ES] = 1.38), peak oxygen pulse (−5.7 %; ES = 0.96), and peak heart rate (−1.9 %; ES = 0.61). Peak minute ventilation, and minute ventilation/carbon dioxide production slope were unchanged after infection compared to the pre-infection values. In the entire 1000-m, the impaired tendencies were found in completion time, mean power, and mean speed (−2.4 to 1.2 %; small ESs = -0.40 to 0.47) as well as significant changes in stroke rate and stroke length (−4.5 to 3.7 %; ESs = -0.60 to 0.73).</p></div><div><h3>Conclusion</h3><p>SARS-CoV-2 infection decreased CRF and time-trial performance even two months after return to regular training in vaccinated athletes.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 350-358"},"PeriodicalIF":2.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000455/pdfft?md5=b843a2eafe13d15ab4e5cd7662b43d4d&pid=1-s2.0-S1728869X24000455-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical exercise-related manifestations of long COVID: A systematic review and meta-analysis","authors":"Chen Zheng ,&nbsp;Jun-Jie Chen ,&nbsp;Zi-Han Dai ,&nbsp;Ke-Wen Wan ,&nbsp;Feng-Hua Sun ,&nbsp;Jun-Hao Huang ,&nbsp;Xiang-Ke Chen","doi":"10.1016/j.jesf.2024.06.001","DOIUrl":"10.1016/j.jesf.2024.06.001","url":null,"abstract":"<div><h3>Objective</h3><p>This study aims to systematically assess physical exercise-related symptoms of post-acute sequelae of SARS-CoV-2 infection (PASC or long COVID) in coronavirus disease 2019 (COVID-19) survivors.</p></div><div><h3>Methods</h3><p>Eight databases were systematically searched on March 03, 2024. Original studies that compared physical exercise-related parameters measured by exercise testing between COVID-19 survivors who recovered from SARS-CoV-2 infection over 3 months and non-COVID-19 controls were included. A random-effects model was utilized to determine the mean differences (MDs) or standardized MDs in the meta-analysis.</p></div><div><h3>Results</h3><p>A total of 40 studies with 6241 COVID-19 survivors were included. The 6-min walk test, maximal oxygen consumption (VO₂max), and anaerobic threshold were impaired in COVID-19 survivors 3 months post-infection compared with non-COVID-19 controls in exercise testing, while VO₂ were comparable between the two groups at rest. In contrast, no differences were observed in SpO₂, heart rate, blood pressure, fatigue, and dyspnea between COVID-19 survivors and non-COVID-19 controls in exercise testing.</p></div><div><h3>Conclusion</h3><p>The findings suggest an underestimation of the manifestations of PASC. COVID-19 survivors also harbor physical exercise-related symptoms of PASC that can be determined by the exercise testing and are distinct from those observed at rest. Exercise testing should be included while evaluating the symptoms of PASC in COVID-19 survivors.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 341-349"},"PeriodicalIF":2.4,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000431/pdfft?md5=7a96ddc374f2e975fcd83dd5946d31e0&pid=1-s2.0-S1728869X24000431-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141403319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How many adults have sufficient muscle-strengthening exercise and the associated factors: A systematic review consisting of 2,629,508 participants","authors":"Zhanbing Ren ,&nbsp;Yanjie Zhang ,&nbsp;Clemens Drenowatz ,&nbsp;Narelle Eather ,&nbsp;Jintao Hong ,&nbsp;Lei Wang ,&nbsp;Jin Yan ,&nbsp;Sitong Chen","doi":"10.1016/j.jesf.2024.06.002","DOIUrl":"10.1016/j.jesf.2024.06.002","url":null,"abstract":"<div><h3>Purpose</h3><p>The aim of this systematic review was to (1) estimate the prevalence of adhering to the MSE guidelines (at least 2 times/days a week) among adults; and (2) synthesize evidence on the correlates of adhering to the MSE guidelines.</p></div><div><h3>Methods</h3><p>Five electronic databases were searched (March 2022), with a total of 30 observational studies consisting of 2,629,508 participants meeting the eligibility criteria. A meta-analysis was conducted to pool the prevalence of adhering to the MSE guidelines using the results of 21 eligible studies (study aim 1); and data reporting correlates of adhering to the MSE guidelines using 12 eligible studies were synthesized and categorized based on the Socioecological Model Framework (study aim 2).</p></div><div><h3>Results</h3><p>Overall, 22.8 % (95%CI: 18.18 % ─ 27.77 %) of adults adhered to the MSE guidelines, and 23 potential correlates at five levels were examined. Five variables (i.e., sex, age, education level, socioeconomic status) at the sociodemographic level and two variables (i.e., body mass index, self-rated health) at the physical related level were identified as consistent correlates, but displaying weak to moderate association strengths.</p></div><div><h3>Conclusions</h3><p>Less than a quarter of adults meet the MSE guidelines and multidimensional correlates are associated with the adherence to the guidelines, particularly sociodemographic correlates (e.g., sex, age, and educational level). Findings highlight the need to further promote the importance of engaging in MSE among adults and investing effective interventions that not only provide opportunities for MSE for adults, but also facilitate the development of skills and confidence to engage in MSE.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 359-368"},"PeriodicalIF":2.4,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000443/pdfft?md5=2bca93653c62ef21598661e99360d806&pid=1-s2.0-S1728869X24000443-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141396825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of volume-matched once-weekly and thrice-weekly high-intensity interval training (HIIT) on body adiposity in adults with central obesity: Study protocol for a randomized controlled trial","authors":"Chit K. Leung ,&nbsp;Joshua D.K. Bernal ,&nbsp;Angus P. Yu ,&nbsp;Francesco Recchia ,&nbsp;Bjorn T. Tam ,&nbsp;Daniel Y.T. Fong ,&nbsp;Derwin K.C. Chan ,&nbsp;Heidi H. Ngai ,&nbsp;Chi H. Lee ,&nbsp;Patrick S.H. Yung ,&nbsp;Stephen H.S. Wong ,&nbsp;Martin Gibala ,&nbsp;Parco M. Siu","doi":"10.1016/j.jesf.2024.05.001","DOIUrl":"10.1016/j.jesf.2024.05.001","url":null,"abstract":"<div><h3>Objective</h3><p>This study aims to examine the comparative effects of 75 min of volume-matched once-weekly and thrice-weekly high-intensity interval training (HIIT) on body adiposity in adults with central obesity.</p></div><div><h3>Methods</h3><p>This assessor-blinded, three-arm, randomized controlled trial will recruit 315 physically inactive adults with central obesity (aged ≥18 years, body mass index ≥23, waist circumference ≥90 cm for men and ≥80 cm for women). Participants will be randomly allocated to the once-weekly HIIT, thrice-weekly HIIT or usual care control group. Participants in the HIIT groups will receive weekly exercise training sessions for 16 weeks, prescribed either once or three times weekly. Each HIIT session will consist of a supervised program of four 4-min high-intensity intervals at 85%–95% peak heart rate (HR_peak) interspersed with 3-min active recovery intervals at 50%–70% HR_peak. Participants in the once-weekly HIIT group will perform the 25-min HIIT bout three times with a break between each 25-min HIIT bout. The usual care control group will receive bi-weekly health education classes. The outcome assessments will be conducted at baseline, 16 weeks (post-intervention) and 32 weeks (follow-up). The primary outcome will be total body adiposity assessed by dual-energy X-ray absorptiometry (DXA). The secondary outcome measures will include markers of cardiovascular and metabolic health (body composition, cardiorespiratory fitness, blood pressure, and blood lipids), mental health, cognitive performance, health-related quality of life, sleep quality, habitual physical activity, diet, medication, adverse events and adherence to the intervention.</p></div><div><h3>Impact of the project</h3><p>The findings from this study are expected to consolidate the therapeutic efficacy of HIIT for the management of central obesity and inform the comparative compliance, feasibility and suitability of once-weekly and thrice-weekly HIIT as exercise strategies to manage obesity. In particular, the present study is expected to provide a novel perspective on the utility of low-frequency HIIT (i.e., once-weekly) as an effective and sustainable exercise strategy to tackle the obesity pandemic. The anticipated findings will hold substantial translational value by informing public health policies and enhancing exercise compliance in the physically inactive obese population.</p></div><div><h3>Trial registration</h3><p>ClinicalTrials.gov (NCT04887454).</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 329-340"},"PeriodicalIF":2.8,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000418/pdfft?md5=34cb27fb83cd61d2674f8dc72a7f2cb7&pid=1-s2.0-S1728869X24000418-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141408088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Psychometric property and measurement invariance of perceived benefits and barriers of physical activity in Chinese adolescents","authors":"Jun Dai ,&nbsp;Han Chen ,&nbsp;Haichun Sun","doi":"10.1016/j.jesf.2024.05.002","DOIUrl":"https://doi.org/10.1016/j.jesf.2024.05.002","url":null,"abstract":"<div><h3>Background</h3><p>The perceived benefits and barriers to physical activity play crucial roles in determining daily physical activity levels. However, previous studies have employed tools lacking adequate validation, leading to inconsistent conclusions about the impact of these two factors. Therefore, this national, population-based study was conducted to assess the psychometric properties, measurement invariance, and predictive validity of the Chinese versions of the perceived benefits (C-PBEPA) and barriers to physical activity (C-PBAPA) scales.</p></div><div><h3>Methods</h3><p>The final sample (N = 2942, 49.3 % for boys) was randomly split into two subsamples. The first subsample was used for exploratory factor analysis and the second subsample was used for confirmatory factor analysis. Measurement invariance across gender and age groups were examined. Structural equation models were developed to examine the predictive validity of the revised C-PBEPA and C-PBAPA on moderate to vigorous PA.</p></div><div><h3>Results</h3><p>The results showed that both scales were unidimensional, had excellent model fit (e.g., <em>X</em>²/df &lt; 3, CFI &gt;0.9, RMSEA &lt;0.06) and demonstrated convergent validity. Findings also revealed lack of scalar invariance for C-PBAPA between preadolescents and adolescents’ groups (ΔCFI &gt;0.01) and supported the predictive validity of both scales (<em>p</em> &lt; 0.001).</p></div><div><h3>Conclusion</h3><p>The study demonstrated that the revised C-PBEPA and C-PBAPA are valid scales for measuring Chinese adolescents’ perceived benefits and barriers to PA.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 322-328"},"PeriodicalIF":2.8,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X2400042X/pdfft?md5=a5d32ed34e7145ea251ea8ba3262c0d5&pid=1-s2.0-S1728869X2400042X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141250973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of probiotic supplementation on 12 min run performance, mood management, body composition and gut microbiota in amateur marathon runners: A double-blind controlled trial","authors":"Le Wang ,&nbsp;Fan-Jing Meng ,&nbsp;Yi-Han Jin ,&nbsp;Li-Qiang Wu ,&nbsp;Ruo-Yu Tang ,&nbsp;Kuang-Hui Xu ,&nbsp;Yun Guo ,&nbsp;Jun-Jie Mao ,&nbsp;Jian-Ping Ding ,&nbsp;Jie Li","doi":"10.1016/j.jesf.2024.04.004","DOIUrl":"10.1016/j.jesf.2024.04.004","url":null,"abstract":"<div><h3>Background</h3><p>Probiotic supplementation has a positive effect on endurance exercise performance and body composition in athletes, but the underlying mechanisms remain unclear. Gut microbiota can provide measurable markers of immune function in athletes, and microbial composition analysis may be sensitive enough to detect stress and metabolic disorders caused by exercise.</p></div><div><h3>Methods</h3><p>Nineteen healthy active amateur marathon runners (15 male and 4 female) with a mean age of 29.11 years volunteered to participate in this double-blind controlled study. Based on the performance of the Cooper 12-min running test (CRT), the participants were allocated into two groups to receive either a probiotic formulation comprising lactobacillus acidophilus and bifidobacterium longum (n = 10) or placebo containing maltodextrin (n = 9) for five weeks. Consistency of diet and exercise was ensured throughout the experimental period. Before and after the intervention, all participants were assessed for CRT, emotional stability and gastrointestinal symptoms, gut microbiota composition, body composition and magnetic resonance imaging (MRI) indicators of skeletal muscle microcirculation.</p></div><div><h3>Results</h3><p>Compared to before the intervention, the probiotics group showed an increase in CRT score (2.88 ± 0.57 vs 3.01 ± 0.60 km, <em>P</em>＜0.05), significant improvement in GSRS and GIQLI (9.20 ± 4.64 vs 7.40 ± 3.24, 118.90 ± 12.30 vs 127.50 ± 9.85, <em>P</em>＜0.05), while these indicators remained unchanged in the control group, with a significant time-group interaction effect on gastrointestinal symptoms. Additionally, some MRI metabolic cycling indicators of the thigh skeletal muscle also changed in the probiotics group (<em>P</em>＜0.05). Regarding microbiota abundance, the probiotics group exhibited a significant increase in the abundance of beneficial bacteria and a significant decrease in the abundance of harmful bacteria post-intervention (<em>P</em>＜0.05).</p></div><div><h3>Conclusion</h3><p>As a sports nutritional supplement, probiotics have the potential to improve athletic performance by optimizing the balance of gut microbiota, alleviating gastrointestinal symptoms.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 297-304"},"PeriodicalIF":2.8,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X2400039X/pdfft?md5=9b1efa1e6706b6e156e0526d7b0388fb&pid=1-s2.0-S1728869X2400039X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140764807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of conventional versus virtual reality-simulated treadmill exercise on fatigue, cognitive function, and participant satisfaction in post-COVID-19 subjects. A randomized trial","authors":"Ahmad Mahdi Ahmad ,&nbsp;Sara Ali Mohamed Awad Allah ,&nbsp;Gehad Ali Abd Elhaseeb ,&nbsp;Dalia Ezzat Elsharawy ,&nbsp;Hend Salem Ahmed ,&nbsp;Mona Ahmed Mohamed Abdelwahab","doi":"10.1016/j.jesf.2024.04.003","DOIUrl":"10.1016/j.jesf.2024.04.003","url":null,"abstract":"<div><h3>Background/objective</h3><p>Post-COVID-19 subjects typically experience symptoms of fatigue, cognitive impairment, and sleep difficulty, which can be relieved by conventional aerobic exercise. Virtual Reality (VR) technology to support conventional exercise has recently gained much attention. Therefore, this study aimed to assess the effects of traditional treadmill exercise compared to virtual reality-simulated treadmill exercise on fatigue, cognitive function, sleep quality, and participant satisfaction with the exercise program in post-COVID-19 subjects.</p></div><div><h3>Methods</h3><p>This single-centered, randomized, parallel-group intervention study was conducted between December 2021 and March 2022. Sixteen of twenty post-COVID-19 subjects completed this study (n1 = 8, n2 = 8). Inclusion criteria were persistent dyspnea/fatigue, mild cognitive problems, and age from 30<strong>–</strong>60 years. Exclusion criteria were previous severe COVID-19 infection and ICU admission, concomitant respiratory or cardiovascular disease, and musculoskeletal or neurological disease. Eligible subjects were assigned randomly to two groups: a non-VR group that received traditional treadmill aerobic exercise only and a VR group that received treadmill exercise with non-immersive VR. Both groups received moderate-intensity exercise on a treadmill at [50<strong>–</strong>60 % (peak HR－resting HR) + resting HR] for 30<strong>–</strong>45 min, three times per week, and for four weeks. The outcome measures were the Chalder Fatigue Scale, Montreal Cognitive Assessment (MoCA) questionnaire, Pittsburgh Sleep Quality Index (PSQI), and participant satisfaction with the exercise program rated on a 5-point Likert scale.</p></div><div><h3>Results</h3><p>Both groups showed significant improvements in the Chalder Fatigue Scale, the MoCA questionnaire, and the PSQI scores after training compared to baseline (p &lt; 0.05), without significant differences between them (p &gt; 0.05). However, participant satisfaction with the exercise program was significantly higher in the VR group than in the non-VR group (p = 0.037).</p></div><div><h3>Conclusion</h3><p>A moderate-intensity 4-week treadmill exercise program with and without non-immersive VR may improve fatigue, cognitive function, and sleep quality to the same extent in COVID-19 survivors. However, participant satisfaction with the exercise program could be greater after conventional treadmill training assisted by non-immersive VR than after conventional treadmill training alone in this cohort.</p></div><div><h3>Trial registration</h3><p>Pan African Clinical Trials Registry, PACTR202311561948428, retrospectively registered.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 316-321"},"PeriodicalIF":2.8,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000388/pdfft?md5=853d355480ad6af16724cafd515b7df3&pid=1-s2.0-S1728869X24000388-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140794036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Mild Hyperbaric Oxygen Therapy on Timing Sequence Recovery of Muscle Fatigue in Chinese University Male Athletes","authors":"Chaoyi Qu ,&nbsp;Minxiao Xu ,&nbsp;Santiago Lorenzo ,&nbsp;Peng Huang ,&nbsp;Zhijian Rao ,&nbsp;Xue Geng ,&nbsp;Jiexiu Zhao","doi":"10.1016/j.jesf.2024.04.005","DOIUrl":"https://doi.org/10.1016/j.jesf.2024.04.005","url":null,"abstract":"<div><h3>Objectives</h3><p>This study aimed to investigate the timing sequence recovery effects of single and repeated Mild Hyperbaric Oxygen Therapy (MHOT) on muscle fatigue induced by cycling exercise through a comprehensive set of parameters.</p></div><div><h3>Methods</h3><p>This study employed a controlled crossover design involving 12 Chinese secondary national-level male athletes. Each participant completed two identical trials over six days. Each trial consisted of a 90-min cycling exercise followed by either a Control (CON) intervention (1 atm absolute (ATA), 20.9 % oxygen, 60 min) or MHOT intervention (1.25 ATA, 26%–28 % oxygen, 60 min). Various physiological parameters including Rating of Perceived Exertion (RPE), Heart Rate (HR), Peripheral Oxygen Saturation (SpO2), Perfusion Index (PI%), Creatine Kinase (CK), Lactate Dehydrogenase (LDH), Lactic Acid (LA), Blood Urea Nitrogen (BUN), Superoxide Dismutase (SOD), Malondialdehyde (MDA), and Standing Long Jump Distance (SLJ) were measured at six different time points throughout the trials.</p></div><div><h3>Results</h3><p>RPE revealed that the MHOT group experienced reduced subjective fatigue in comparison to the CON group (<em>P</em> &lt; 0.05). Additionally, MHOT demonstrated quicker recovery in HR and PI% compared to the CON group (<em>P</em> &lt; 0.05). Regarding CK, LA, BUN, SOD, and MDA levels, the MHOT group exhibited accelerated recovery post-6 intervention and at the 24-h mark after six interventions, showing significant improvement over the CON group (<em>P</em> &lt; 0.05). However, no notable disparity was observed between groups concerning SpO2, LDH, and SLJ.</p></div><div><h3>Conclusions</h3><p>Both single and repeated sessions of MHOT demonstrated efficacy in alleviating subjective fatigue and promoting recovery of heart rate and blood perfusion following muscle fatigue, ensuring parallel structure and consistency in their effects. Repeated MHOT sessions (six times) exhibit a significant reduction in levels of blood markers associated with muscle damage, metabolites, and oxidative stress. However, the impact of a single MHOT intervention was less pronounced.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 305-315"},"PeriodicalIF":2.8,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000406/pdfft?md5=c2b55ccdbb54cc68e5dfe2458fc028e3&pid=1-s2.0-S1728869X24000406-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140813647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effects of COVID-19 on the Physical Activity and Recreational Screen Time among Chinese children and adolescents","authors":"Ming Ming Guo ,&nbsp;Koon Teck Koh ,&nbsp;Xiao Zan Wang","doi":"10.1016/j.jesf.2024.04.002","DOIUrl":"https://doi.org/10.1016/j.jesf.2024.04.002","url":null,"abstract":"<div><h3>Background</h3><p>The lack of Physical Activity (PA) and prolonged Recreational Screen Time (RST) among children and adolescents has been exacerbated during the COVID-19 pandemic, causing this issue to escalate into a crucial public health concern. This study aims to investigate the trends in PA and RST among Chinese children and adolescents from 2019 to 2022, thereby analyzing the short-term and long-term effects of the pandemic on PA and RST among Chinese children and adolescents.</p></div><div><h3>Methods</h3><p>A nationally representative sample of Chinese primary, middle, and high school students was surveyed annually between September and December from 2019 to 2022 using a consistent set of questionnaires. Trends in PA and RST across different school levels, genders, areas (urban/rural), and regions (north/south) were analyzed using Segmented Linear Regression.</p></div><div><h3>Results</h3><p>From 2019 to 2022, the PA and RST of children and adolescents displayed an inverted U-shaped trend, initially increasing and subsequently declining. Specifically, from 2019 to 2021, the PA of children and adolescents significantly increased but dramatically declined from 2021 to 2022. This trend in PA is more pronounced among primary, male, urban, and northern children and adolescent. The RST of children and adolescents increased from 2019 to 2020 but significantly decreased from 2020 to 2022. This trend in RST is more pronounced among primary, urban, and southern children and adolescent.</p></div><div><h3>Conclusions</h3><p>This research unveils the effects of the pandemic on PA and RST in children and adolescents, suggesting short-term beneficial and long-term adverse effects on PA and short-term adverse and long-term beneficial effects on RST. These findings provide a foundation for formulating policies related to children and adolescents' PA and RST during the pandemic.</p></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"22 4","pages":"Pages 288-296"},"PeriodicalIF":2.8,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1728869X24000376/pdfft?md5=79561ee1a16acb574d05b3d3aefea093&pid=1-s2.0-S1728869X24000376-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140649860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}