Journal of Sport and Health Science最新文献

{"title":"Elevated fluid and glycosaminoglycan content in the Achilles tendon contribute to higher intratendinous pressure: Implications for Achilles tendinopathy","authors":"Lauren Pringels, Gert-Jan Van Valckenborgh, Patrick Segers, Amélie Chevalier, Hedwig Stepman, Evi Wezenbeek, Arne Burssens, Luc Vanden Bossche","doi":"10.1016/j.jshs.2024.04.004","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.04.004","url":null,"abstract":"Tendinopathy alters the compositional properties of the Achilles tendon by increasing fluid and glycosaminoglycan content. It has been speculated that these changes may affect intratendinous pressure, but the extent of this relationship remains unclear. Therefore, we aimed to investigate the impact of elevated fluid and glycosaminoglycan content on Achilles tendon intratendinous pressure and to determine whether hyaluronidase (HYAL) therapy can intervene in this potential relationship. Twenty paired fresh-frozen cadaveric Achilles tendons were mounted in a tensile-testing machine and loaded up to 5% strain. Intratendinous resting (at 0% strain) and dynamic pressure (at 5% strain) were assessed using the microcapillary infusion technique. First, intratendinous pressure was measured under native conditions before and after infusion of 2 mL physiological saline. Next, 80 mg of glycosaminoglycans were administered bilaterally to the paired tendons. The right tendons were additionally treated with 1500 units of HYAL. Finally, both groups were retested, and the glycosaminoglycan content was analyzed. It was found that both elevated fluid and glycosaminoglycan content resulted in higher intratendinous resting and dynamic pressures ( < 0.001). HYAL treatment induced a 2.3-fold reduction in glycosaminoglycan content ( = 0.002) and restored intratendinous pressures. The results of this study demonstrated that elevated fluid and glycosaminoglycan content in Achilles tendinopathy contribute to increased intratendinous resting and dynamic pressures, which can be explained by the associated increased volume and reduced permeability of the tendon matrix, respectively. HYAL degrades glycosaminoglycans sufficiently to lower intratendinous pressures and may, therefore, serve as a promising treatment.","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140608345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Device-measured physical activity and sedentary time in the Nordic countries: A scoping review of population-based studies","authors":"Ing-Mari Dohrn, Jakob Tarp, Jostein Steene-Johannessen, Tommi Vasankari, Maria Hagströmer","doi":"10.1016/j.jshs.2024.04.003","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.04.003","url":null,"abstract":"The purpose of this scoping review was to summarize and describe the methodology and results from population-based studies of physical activity and sedentary time measured with devices in the Nordic countries (Denmark, Finland, Iceland, Norway, and Sweden) and published in 2000 or later. A systematic search was carried out in PubMed and Web of Science in June 2023 using predefined search terms. Fourteen unique research projects or surveillance studies were identified. Additionally, 2 surveillance studies published by national agencies were included, resulting in a total of 16 studies for inclusion. National surveillance systems exist in Finland and Norway, with regular survey waves in school-aged children/adolescents and adults. In Denmark, recent nationally representative data have been collected in school children only. So far, Sweden has no regular national surveillance system using device-based data collection. No studies were found from Iceland. The first study was conducted in 2001 and the most recent in 2022, with most data collected from 2016 to date. Five studies included children/adolescents 6–18 years, no study included preschoolers. In total 11 studies included adults, of which 8 also covered older adults. No study focused specifically on older adults. The analytical sample size ranged from 205 to 27,890. Detailed methodology is presented, such as information on sampling strategy, device type and placement, wear protocols, and physical activity classification schemes. Levels of physical activity and sedentary time in children/adolescents, adults, and older adults across the Nordic countries are presented. A growing implementation of device-based population surveillance of physical activity and sedentary behavior in the Nordic countries has been identified. The variety of devices, placement, and data procedures both within and between the Nordic countries highlights the challenges when it comes to comparing study outcomes as well as the need for more standardized data collection.","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140545468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oral fluoroquinolones and the risk of Achilles tendon rupture","authors":"Peter Vibe Rasmussen, Jarl Emanuel Strange, Anders Holt","doi":"10.1016/j.jshs.2024.04.001","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.04.001","url":null,"abstract":"","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140545524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exercise benefits meet the esophagus","authors":"Alejandro Santos-Lozano, Pedro L. Valenzuela, Carmen Fiuza-Luces, Alejandro Lucia","doi":"10.1016/j.jshs.2024.04.002","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.04.002","url":null,"abstract":"","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140545423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measurement, associations, patterns, and promotion: Unveiling vital areas in physical activity epidemiology.","authors":"Kara M Whitaker, M. LaMonte","doi":"10.1016/j.jshs.2024.04.009","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.04.009","url":null,"abstract":"","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140776451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Refining safety considerations for intradialytic blood flow restriction exercise. Commentary on “Concerns on the application of blood-flow restriction resistance exercise and thrombosis risk in hemodialysis patients”","authors":"Matthew J. Clarkson","doi":"10.1016/j.jshs.2024.03.005","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.03.005","url":null,"abstract":"","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140182648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Commentary on “Alexa, let's train now! – A systematic review and classification approach to digital and home-based physical training interventions aiming to support healthy cognitive aging”","authors":"Barbara E. Ainsworth, Zeyun Feng","doi":"10.1016/j.jshs.2024.03.001","DOIUrl":"https://doi.org/10.1016/j.jshs.2024.03.001","url":null,"abstract":"","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140057902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lower limb suspension induces threshold-specific alterations of motor units properties that are reversed by active recovery.","authors":"Giacomo Valli, Fabio Sarto, Andrea Casolo, Alessandro Del Vecchio, Martino V Franchi, Marco V Narici, Giuseppe De Vito","doi":"10.1016/j.jshs.2023.06.004","DOIUrl":"10.1016/j.jshs.2023.06.004","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to non-invasively test the hypothesis that (a) short-term lower limb unloading would induce changes in the neural control of force production (based on motor units (MUs) properties) in the vastus lateralis muscle and (b) possible changes are reversed by active recovery (AR).</p><p><strong>Methods: </strong>Ten young males underwent 10 days of unilateral lower limb suspension (ULLS) followed by 21 days of AR. During ULLS, participants walked exclusively on crutches with the dominant leg suspended in a slightly flexed position (15°-20°) and with the contralateral foot raised by an elevated shoe. The AR was based on resistance exercise (leg press and leg extension) and executed at 70% of each participant's 1 repetition maximum, 3 times/week. Maximal voluntary isometric contraction (MVC) of knee extensors and MUs properties of the vastus lateralis muscle were measured at baseline, after ULLS, and after AR. MUs were identified using high-density electromyography during trapezoidal isometric contractions at 10%, 25%, and 50% of the current MVC, and individual MUs were tracked across the 3 data collection points.</p><p><strong>Results: </strong>We identified 1428 unique MUs, and 270 of them (18.9%) were accurately tracked. After ULLS, MVC decreased by 29.77%, MUs absolute recruitment/derecruitment thresholds were reduced at all contraction intensities (with changes between the 2 variables strongly correlated), while discharge rate was reduced at 10% and 25% but not at 50% MVC. Impaired MVC and MUs properties fully recovered to baseline levels after AR. Similar changes were observed in the pool of total as well as tracked MUs.</p><p><strong>Conclusion: </strong>Our novel results demonstrate, non-invasively, that 10 days of ULLS affected neural control predominantly by altering the discharge rate of lower-threshold but not of higher-threshold MUs, suggesting a preferential impact of disuse on motoneurons with a lower depolarization threshold. However, after 21 days of AR, the impaired MUs properties were fully restored to baseline levels, highlighting the plasticity of the components involved in neural control.</p>","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10980901/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10038560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Commentary on \"Association of daily sitting time and leisure-time physical activity with body fat among U.S. adults\".","authors":"Barbara E Ainsworth","doi":"10.1016/j.jshs.2023.09.002","DOIUrl":"10.1016/j.jshs.2023.09.002","url":null,"abstract":"","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10980888/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10222801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of resistance training volume on body adiposity, metabolic risk, and inflammation in postmenopausal and older females: Systematic review and meta-analysis of randomized controlled trials.","authors":"Paulo Ricardo Prado Nunes, Pâmela Castro-E-Souza, Anselmo Alves de Oliveira, Bruno de Freitas Camilo, Gislaine Cristina-Souza, Lucio Marques Vieira-Souza, Marcelo Augusto da Silva Carneiro","doi":"10.1016/j.jshs.2023.09.012","DOIUrl":"10.1016/j.jshs.2023.09.012","url":null,"abstract":"<p><strong>Purpose: </strong>This meta-analytical study aimed to explore the effects of resistance training (RT) volume on body adiposity, metabolic risk, and inflammation in postmenopausal and older females.</p><p><strong>Methods: </strong>A systematic search was performed for randomized controlled trials in PubMed, Scopus, Web of Science, and SciELO. Randomized controlled trials with postmenopausal and older females that compared RT effects on body adiposity, metabolic risk, and inflammation with a control group (CG) were included. Independent reviewers selected the studies, extracted the data, and performed the risk of bias and certainty of the evidence (Grading of Recommendations, Assessment, Development, and Evaluation (GRADE)) evaluations. Total body and abdominal adiposity, blood lipids, glucose, and C-reactive protein were included for meta-analysis. A random-effects model, standardized mean difference (Hedges' g), and 95% confidence interval (95%CI) were used for meta-analysis.</p><p><strong>Results: </strong>Twenty randomized controlled trials (overall risk of bias: some concerns; GRADE: low to very low) with overweight/obese postmenopausal and older females were included. RT groups were divided into low-volume RT (LVRT, ∼44 sets/week) and high-volume RT (HVRT, ∼77 sets/week). Both RT groups presented improved body adiposity, metabolic risk, and inflammation when compared to CG. However, HVRT demonstrated higher effect sizes than LVRT for glucose (HVRT = -1.19; 95%CI: -1.63 to -0.74; LVRT = -0.78; 95%CI:-1.15 to -0.41) and C-reactive protein (HVRT = -1.00; 95%CI: -1.32 to -0.67; LVRT = -0.34; 95%CI, -0.63 to -0.04)) when compared to CG.</p><p><strong>Conclusion: </strong>Compared to CG, HVRT protocols elicit greater improvements in metabolic risk and inflammation outcomes than LVRT in overweight/obese postmenopausal and older females.</p>","PeriodicalId":48897,"journal":{"name":"Journal of Sport and Health Science","volume":null,"pages":null},"PeriodicalIF":11.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10980902/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41149582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}