Abdulmajeed Okshah, Sunil Kumar Vaddamanu, Imran Khalid, Mohammad Zahir Kota, Samuel Ebele Udeabor, Fawaz Abdul Hamid Baig
{"title":"The Impact of Bruxism on Athletic Performance: a Systematic Review and Meta-analysis.","authors":"Abdulmajeed Okshah, Sunil Kumar Vaddamanu, Imran Khalid, Mohammad Zahir Kota, Samuel Ebele Udeabor, Fawaz Abdul Hamid Baig","doi":"10.1055/a-2588-0766","DOIUrl":"10.1055/a-2588-0766","url":null,"abstract":"<p><p>Bruxism, an involuntary clenching or grinding of teeth, is increasingly prevalent among athletes due to elevated stress, performance anxiety, and intense training. This systematic review analyzed 11 studies (2000-2023) on bruxism prevalence, underlying factors, and its impact on athletic performance. Data were extracted on prevalence, strength, endurance, coordination, reaction time, psychological stress, sleep quality, and injury risk. Random-effects models calculated pooled prevalence, standardized mean differences, and odds ratios. Bruxism prevalence among athletes ranged from 15 to 70%, with a pooled estimate of 38% (95% confidence interval: 25-52%), significantly higher than the general population's 8-20%. Combat sports (58%) and weightlifting (50%) showed the highest rates. Athletes with bruxism exhibited reduced strength (standardized mean difference=-0.48), endurance (standardized mean difference=-0.41), coordination (standardized mean difference=-0.45), slower reaction times (standardized mean difference=-0.33), elevated anxiety (standardized mean difference=0.62), poorer sleep quality (standardized mean difference=-0.56), and a 2.5-fold higher injury risk (odds ratio=2.5). Bruxism poses significant challenges for athletes, compromising oral health, sleep, and performance. Further research should clarify sport-specific risk factors and develop targeted management strategies to safeguard athletes' health and competitive outcomes.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143964749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Manuel Mateo-March, David Barranco-Gil, Alejandro Hernández-Belmonte, Alejandro Javaloyes, Xabier Muriel, Jesús G Pallarés, Alejandro Lucia, Pedro L Valenzuela
{"title":"Reliability of the durability concept in professional cyclists: a field-based study.","authors":"Manuel Mateo-March, David Barranco-Gil, Alejandro Hernández-Belmonte, Alejandro Javaloyes, Xabier Muriel, Jesús G Pallarés, Alejandro Lucia, Pedro L Valenzuela","doi":"10.1055/a-2555-8961","DOIUrl":"https://doi.org/10.1055/a-2555-8961","url":null,"abstract":"<p><p>Durability is increasingly recognized as a determinant of cycling performance. However, its reliability remains unknown. In this study, we assessed the repeatability of durability (determined as the decline in power output after accumulated work). We recorded the highest power output values (maximum mean power values) attained by 18 professional cyclists (27±4 y) during training and competition for different effort durations (10 s and 1, 5, 10, and 20 min) after different levels of accumulated work (0-40 kJ/kg) during a cycling season. Repeatability was examined through the standard error of measurement and the intra-class correlation coefficient calculated from the two highest maximum mean power values obtained by each cyclist for each duration and level of accumulated work. A progressive decline of maximum mean power values compared to the non-fatigued state was observed after higher levels of accumulated work, particularly after 20 kJ/kg (<i>p</i><0.001). All maximum mean power values showed high repeatability under fatigue states (all standard error of measurement<5% and intra-class correlation coefficient>0.90), with the lowest repeatability observed for the shortest efforts (10-s maximum mean power). These findings were confirmed separately for training sessions and competitions, albeit with lower repeatability (standard error of measurement<8% and intra-class correlation coefficient>0.80). The measure of durability appears therefore reliable, which might support its validity for monitoring field-based performance in professional cyclists.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144078032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChristianHoumann Amdi, Jackson Fyfe, SangHoon Yoon, Greg Nuckols, Martin Refalo
{"title":"Biological sex differences in fatigue in resistance-trained individuals: A scoping review.","authors":"ChristianHoumann Amdi, Jackson Fyfe, SangHoon Yoon, Greg Nuckols, Martin Refalo","doi":"10.1055/a-2563-9449","DOIUrl":"10.1055/a-2563-9449","url":null,"abstract":"<p><p>Females may experience less neuromuscular fatigue and improved recovery following resistance training than males; however, it is unclear whether this applies to resistance-trained individuals. A systematic scoping review was performed to map the evidence on sex differences in fatigue during and following resistance training in trained participants. PubMed, CINAHL and SPORTDiscus were searched following PRISMA-ScR guidelines. The protocol was prospectively registered. Of the 4,020 identified articles, 34 were included. These studies assessed sex differences in fatigue using various measures during single and multiple resistance training sets, performance relative to the baseline at various time points (0-5 min, 1-6 h, 24 h, and 48-96 h after resistance training), and metabolic responses. Substantial heterogeneity in study design and results were observed. Together, most studies found minor-to-no sex differences in neuromuscular fatigue, but some evidence of greater fatigability in males during or immediately following resistance training were found when (1) more complex free-weight exercises were performed with moderate loads, (2) rest periods were shorter, and (3) males were substantially stronger than females in relative terms, among others. Future investigations should explore the impact of training variables and habitual training on fatigue in males and females of comparable relative strength and technical proficiency.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143669833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Witalo Kassiano, Bruna Costa, Gabriel Kunevaliki, Felipe Lisboa, Natã Stavinski, Aline Prado, Ian Tricoli, Jarlisson Francsuel, Luis Lima, JoãoPedro Nunes, Alex Silva Ribeiro, Edilson S Cyrino
{"title":"Distinct muscle growth and strength adaptations after preacher and incline biceps curls.","authors":"Witalo Kassiano, Bruna Costa, Gabriel Kunevaliki, Felipe Lisboa, Natã Stavinski, Aline Prado, Ian Tricoli, Jarlisson Francsuel, Luis Lima, JoãoPedro Nunes, Alex Silva Ribeiro, Edilson S Cyrino","doi":"10.1055/a-2517-0509","DOIUrl":"10.1055/a-2517-0509","url":null,"abstract":"<p><p>We compared performing preacher and incline biceps curls on changes in elbow flexor muscle size and strength. This was a between-group repeated measure randomized trial. Sixty-three young women performed the preacher biceps curl (<i>n</i>=30) or the incline biceps curl (<i>n</i>=33) for 8 weeks, twice a week. We measured the muscle thickness of elbow flexors at the proximal, middle, and distal sites. We assessed the muscle strength using three repetition maximum tests in the preacher curl and the incline curl. We observed a greater increase in the proximal elbow flexor thickness in the incline biceps curl compared to the preacher biceps curl (mean difference=0.08 cm [95% confidence interval: 0.02, 0.13 cm]). We observed a greater increase in the distal elbow flexor thickness in the preacher biceps curl compared to the incline biceps curl (mean difference=0.10 cm [95%CI: 0.04, 0.15 cm]). The preacher biceps curl showed a greater increase in three repetition maximum tests in the preacher curl (mean difference=1.88 kg [95%CI: 1.14, 2.62 kg]). The incline biceps curl showed a greater increase in three repetition maximum tests in the incline biceps curl (mean difference=0.86 kg [95%CI: 0.10, 1.62 kg]). Our findings suggest regional differences in muscle growth induced by the preacher and incline biceps curls. Strength gains appear to follow the principle of specificity.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"334-343"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142983534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Epidemiology of fractures and care in male collegiate Taekwondo athletes by weight classes.","authors":"Haifang Wang, Sangcheol Yoo, Munku Song","doi":"10.1055/a-2519-1759","DOIUrl":"10.1055/a-2519-1759","url":null,"abstract":"<p><p>The purpose of this study was to examine the occurrence of fracture injuries and post-fracture management practices by weight classes. A total of 127 male collegiate Taekwondo athletes (64 lightweight athletes and 63 heavyweight athletes) participated in this study. The athletes were classified into lightweight and heavyweight based on their respective competition weight divisions. Logistic regression was used to estimate the odds ratios and 95% confidence intervals. Athletes had experienced fractures to 54.3%. Athletes were more likely to experience fractures during training and defensive movements. Of the fractures reported, 31.9% necessitated surgical intervention. Although 65.1% of the athletes were primarily concerned about the possibility of reinjury, only 36.2% received specialized rehabilitation. The heavyweight athletes had a higher prevalence of fractures (odds ratio=2.40 and 95% confidence interval=1.17-4.90) than the lightweight athletes. The heavyweight athletes had a higher prevalence of fractures during the competition (odds ratio=4.83 and 95% confidence interval=1.54-15.17), in offensive situations (odds ratio=4.67 and 95% confidence interval=1.38-15.99), and in the lower limbs (odds ratio=3.84 and 95% confidence interval=1.12-13.14) than the lightweight athletes. The current evidence that fractures are common in Taekwondo athletes and that fracture patterns may differ between heavyweight and lightweight athletes highlights the need for tailored prevention strategies based on weight classes.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"372-379"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143005296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paloma Tavares Mendonça, Yago Medeiros Dutra, Barbara M Antunes, Fabio Lira, Alessandro Moura Zagatto
{"title":"Fourteen weeks of β-alanine supplementation and HIIT did not improve serum BDNF concentrations and Stroop test performance.","authors":"Paloma Tavares Mendonça, Yago Medeiros Dutra, Barbara M Antunes, Fabio Lira, Alessandro Moura Zagatto","doi":"10.1055/a-2500-5556","DOIUrl":"10.1055/a-2500-5556","url":null,"abstract":"<p><p>This study aimed to investigate whether 14 weeks of β-alanine supplementation and high-intensity intermittent training improves brain-derived neurotrophic factor concentrations and cognitive aspects related to executive functions assessed by the Stroop test. Thirteen healthy and active men underwent a 4-week supplementation period (β-alanine: 6.4 g/d or a placebo) followed by 10-week supplementation combined with high-intensity intermittent training, totaling 14 weeks of intervention. Participants underwent a graded exercise test, while the blood samples for brain-derived neurotrophic factor analysis and the Stroop test (cognitive task) were assessed before and after a high-intensity intermittent exercise (10 runs of 1:1 min effort and a pause ratio at 130% of respiratory compensation point). These measurements were performed three times across the study being at baseline, after 4 weeks of supplementation (POST<sub>4weeks</sub>) and at the end of the 14 weeks of study (POST<sub>14weeks</sub>). Compared to baseline values, there were no improvements in brain-derived neurotrophic factor concentrations or Stroop test performance with either β-alanine or high-intensity intermittent training. Lactate peak concentrations in a high-intensity intermittent exercise session also did not differ between groups. However, high-intensity intermittent training did improve some cardiorespiratory parameters (i.e., intensity associated with V̇O<sub>2max</sub> <i>p</i>=0.01 and respiratory compensation point, <i>p</i>=0.01). In conclusion, β-alanine supplementation alone or associated with high-intensity intermittent training did not improve the brain-derived neurotrophic factor concentrations and Stroop test performance in healthy men.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"324-333"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143005313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reevaluating the energy cost in locomotion: quadrupedal vs. bipedal walking in humans.","authors":"Rui Xu, Riqiang Bao, Yixiang Hu, Chong Gao, Yuhan Guo, Yashu Zhu, Yuanyuan Hu, Guang Ning, Weiqing Wang, Shijia Pan","doi":"10.1055/a-2466-4808","DOIUrl":"10.1055/a-2466-4808","url":null,"abstract":"<p><p>This study examines the energy expenditure and physiological responses associated with short-term quadrupedal locomotion compared to bipedal walking in humans. It aims to support evolutionary theory and explore quadrupedal locomotion's potential for enhancing fitness and health. In a randomized crossover design, 12 participants performed quadrupedal and bipedal walking on a treadmill at identical speeds. Physiological responses, including energy expenditure, carbohydrate oxidation rates, respiratory rate, and heart rate, were measured during both forms of locomotion. Quadrupedal walking significantly increased total energy expenditure by 4.15 Kcal/min [95% CI, 3.11 - 5.19 Kcal/min], due to a rise in carbohydrate oxidation of 1.70 g/min [95% CI, 1.02 - 2.24 g/min]. It also increased respiratory and heart rates, indicating higher metabolic demands. The exercise mainly activated upper limb muscles and the gluteus maximus in the lower limbs. Ten minutes of quadrupedal walking at the same speed as bipedal walking resulted in a 254.48% increase in energy consumption. This simple form of locomotion offers a strategy for enhancing physical activity, and supports the idea that energy optimization influenced the evolution of efficient bipedal locomotion.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"344-355"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142620697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liam Oliver, Stephen Goodman, John Sullivan, Jonathan Peake, Vincent Kelly
{"title":"Challenges and perspectives with understanding the concept of mental fatigue.","authors":"Liam Oliver, Stephen Goodman, John Sullivan, Jonathan Peake, Vincent Kelly","doi":"10.1055/a-2514-1195","DOIUrl":"10.1055/a-2514-1195","url":null,"abstract":"<p><p>Mental fatigue is referred to as a psychophysiological or neurobiological state caused by prolonged periods of demanding cognitive activity. Sport and exercise science research studies have investigated the effects of experimentally induced mental fatigue on cognitive performance, with mixed results. It has been suggested that negative effects of mental fatigue on cognition performance in laboratory studies could translate to impaired sport performance. However, it remains unclear if impairments in sport performance are due to mental fatigue and how mental fatigue may differ from physical fatigue. Fatigue is well understood as a complex multifactorial construct involving interactions between physiological and neuropsychological responses across brain regions. It may be prudent for researchers to return to the origins of fatigue and cognition before attempting to connect mental fatigue and sport cognition. This article reviews the concept of mental fatigue, its mechanisms and neuroanatomical basis, models of cognition relevant to sports science, investigates how mental fatigue may influence cognition, and suggests future research directions. Mental fatigue as a construct separated from fatigue could be an oversight that has hindered the development of our understanding of mental fatigue. Future sports science research could work to enhance our knowledge of our definitions of fatigue.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"316-323"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142949019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yiping Yan, Jingjing Jia, Bei Liu, Youzhi Ke, Yang Liu
{"title":"Adherence to 24-Hour Movement Guidelines before and during COVID-19 in children: A review.","authors":"Yiping Yan, Jingjing Jia, Bei Liu, Youzhi Ke, Yang Liu","doi":"10.1055/a-2464-3228","DOIUrl":"10.1055/a-2464-3228","url":null,"abstract":"<p><p>This study aims to describe and compare adherence to the 24-Hour Movement Guidelines (recommendations for physical activity, screen time, and sleep duration) among children before and during COVID-19 pandemic . The literature search was conducted on Web of Science, PubMed, MEDLINE, and SPORTDiscus for quantitative studies on 24-hour movement behaviors, published in English. The studies were categorized by collection date into before the pandemic (June 16th, 2016 - March 10, 2020) and during the pandemic (March 11th, 2020 - May 5, 2023), with all studies included. A random-effects model was employed to synthesize the adherence rates, and subgroup analyses were conducted based on age, sex, region, and Human development index (HDI) groups. Before the pandemic, 12.1% (95% CI:10.3%-13.9%) of overall children met the three recommendations. During the pandemic, 8.6% (95% CI: 6.4%-11.4%) of overall children met the three recommendations. The adherence to the three recommendations during the pandemic was 3.5% lower (p<0.05) than before the pandemic, with significant regional differences (p<0.05). Most children fail to meet the guidelines in any period. The adherence to the three 24-Hour Movement Guidelines during the pandemic was lower than before, with varying degrees of low adherence across different groups.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"305-315"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143382424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of additional scapular movements on the scapular muscle activity during arm raising.","authors":"Ilyoung Yu, Minhyeok Kang","doi":"10.1055/a-2525-3184","DOIUrl":"10.1055/a-2525-3184","url":null,"abstract":"<p><p>The effects of the two popular strategies, scapular adduction and depression and scapular posterior tilt, on the muscle activity of trapezius and serratus anterior muscles have not been compared. This study demonstrates the effects of additional scapular adduction and depression and scapular posterior tilt movements on the activation of trapezius and serratus anterior muscles and scapular kinematics during arm raising. Eighteen asymptomatic men performed arm raising tasks with and without additional scapular movements, including scapular adduction and depression and scapular posterior tilt. During all tasks, the muscle activity of the upper/middle/lower trapezius and serratus anterior muscles was measured using surface electromyography; scapular upward rotation and posterior tilt angles were measured using a smartphone application. Lower trapezius muscle activity significantly increased during arm raising with scapular adduction and depression (<i>p</i>=0.001) or scapular posterior tilt compared to preferred arm raising (<i>p</i><0.001). However, arm raising with the scapular posterior tilt showed significantly greater serratus anterior muscle activity (<i>p</i>=0.002) and scapular posterior tilt angle (<i>p</i>=0.001) together with lesser upper trapezius muscle activity (<i>p</i>=0.027) compared with those of scapular adduction and depression. Scapular posterior tilt may be effective for increasing the lower trapezius and serratus anterior muscle activity while reducing the upper trapezius muscle activity.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"366-371"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143038864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}