Journal of science and medicine in sport最新文献

{"title":"The HAPPY concept mapping study: \"To prevent injuries in young handball players it's important to…\" - Perceptions among stakeholders.","authors":"Live S Luteberget, Alex Donaldson, Lotte N Andersen, Ewa M Roos, Merete Møller","doi":"10.1016/j.jsams.2024.09.004","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.09.004","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to identify facilitators for implementing injury prevention initiatives in youth handball, and to assess stakeholders' perceptions of their importance and feasibility.</p><p><strong>Design: </strong>Mixed-method concept mapping study.</p><p><strong>Methods: </strong>Four stakeholder groups - coaches, administrators, health staff and players - participated in this mixed-method concept mapping study. Participants (n = 224; 19 % coaches, 22 % health staff, 63 % players, 18 % administrators) first provided statements about facilitators for implementing injury prevention initiatives in youth handball, then thematically grouped them (n = 47), before rating them (n = 57) for importance and feasibility (5-point Likert scales). Stakeholder-specific cluster maps and Go-Zone scatter plots were created. Statements rated above average for both importance and feasibility were considered as prioritized (Go-Zone 1).</p><p><strong>Results: </strong>87 unique statements were generated during brainstorming. Multidimensional scaling and hierarchical cluster analysis resulted in similar sorting data clustering patterns for coaches, health staff, and administrators, which included federation strategies, club strategies, and coach and athlete education/knowledge. All clusters were rated >3 on average ratings of importance by all stakeholder groups. Six statements were in Go-Zone 1 for all stakeholder groups, including three statements about coach knowledge and education. Players' importance and feasibility ratings had limited overlap with other stakeholder groups' Go-Zone 1 statements. Players' Go-Zone 1 statements mainly addressed individual load management and practical training setup.</p><p><strong>Conclusions: </strong>Coach knowledge and education, alongside collaboration among stakeholder groups, are essential when implementing injury prevention initiatives in youth handball. Stakeholder groups have varying perspectives, underscoring the importance of understanding and addressing these diverse viewpoints when implementing injury prevention initiatives in youth handball.</p>","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exercise and Sports Science Australia updated position statement on exercise for preventing falls in older people living in the community.","authors":"Anne Tiedemann, Daina L Sturnieks, Elissa Burton, Jeannette M Thom, Stephen R Lord, Stacey Scott, Catherine Sherrington","doi":"10.1016/j.jsams.2024.09.003","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.09.003","url":null,"abstract":"<p><strong>Backgrounds: </strong>Falls affect a significant number of older Australians and present a major challenge to health care providers and health systems with over 380 older Australians hospitalised for a fall each day.</p><p><strong>Objectives: </strong>This statement seeks to inform and guide exercise practitioners and health professionals in safe and effective prescription of exercise to prevent falls amongst community-dwelling older people.</p><p><strong>Exercise prescription to prevent falls: </strong>Exercise is crucial for preventing falls in older age. Research evidence has identified that programmes which include functional balance and muscle strength training are the most effective in preventing falls. It is also important for exercise to be progressively challenging, ongoing and of sufficient dose to maximise its benefits in reducing falls. Additional (non-exercise) interventions are necessary for people with complex medical conditions, recent hospitalisation and/or particular risk factors not improved by exercise. People at a higher risk of falls may need greater support to undertake safe and effective fall prevention exercise.</p><p><strong>Summary: </strong>Global guidelines for fall prevention and management recommend that all older adults should receive advice about exercise to prevent falls. Qualified exercise professionals are well placed to prescribe and supervise functional balance and muscle strength training to older people with varied functional abilities, including those with co-morbidities.</p>","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142348964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial 2","authors":"","doi":"10.1016/j.jsams.2024.09.001","DOIUrl":"10.1016/j.jsams.2024.09.001","url":null,"abstract":"","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Creatine supplementation does not add to resistance training effects in prostate cancer patients under androgen deprivation therapy: A double-blind randomized trial.","authors":"Ciaran M Fairman, Kristina L Kendall, Robert U Newton, Nicolas H Hart, Dennis R Taaffe, Pedro Lopez, Raphael Chee, Colin I Tang, Daniel A Galvão","doi":"10.1016/j.jsams.2024.09.002","DOIUrl":"10.1016/j.jsams.2024.09.002","url":null,"abstract":"<p><strong>Objectives: </strong>Androgen deprivation therapy (ADT) leads to loss of lean mass (LM) and reduced strength and physical function. Resistance exercise alone can counteract these changes; however, it is unknown if the addition of creatine supplementation can further protect against these ADT-induced toxicities. We compared the effects of creatine supplementation with resistance exercise versus resistance exercise alone in patients with prostate cancer undergoing ADT on LM, muscle strength, and physical function.</p><p><strong>Design: </strong>A 12-week randomized trial.</p><p><strong>Methods: </strong>Men with prostate cancer receiving ADT (n = 30) were randomized to either resistance exercise + placebo (PLA) or resistance exercise + creatine (SUPP), with both groups undertaking supervised exercise 3 days per week. Outcomes included whole body and appendicular LM and fat mass (FM) assessed by dual-energy X-ray absorptiometry, as well as muscle strength (chest press, seated low, leg press), and physical function (timed up-and-go, chair rise, 400-m walk) assessed at baseline and following the intervention.</p><p><strong>Results: </strong>Patients were aged 59-84 years with a BMI of 28.6 kg·m^-2. PLA completed a mean of 30 sessions (83 %) and SUPP a mean of 33 sessions (92 %). Despite similar within-group improvements (p < 0.05) in whole-body LM (PLA +0.6 kg, SUPP +1.3 kg), appendicular LM (PLA +0.5 kg, SUPP +0.6 kg), muscle strength (PLA +8.8-49.3 kg, SUPP +9.4-40.4 kg) and physical function, there were no between group differences (p = 0.078-0.951). No adverse events were reported due to creatine supplementation or resistance exercise.</p><p><strong>Conclusions: </strong>A short-term program of resistance exercise alone results in meaningful improvements in LM, muscle strength and physical function, with no additional effects of creatine supplementation.</p>","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142375604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sex-dependent responses to acute sodium bicarbonate different dose treatment: A randomized double-blind crossover study","authors":"Krzysztof Durkalec-Michalski, Paulina M. Nowaczyk, Bryan Saunders, Amelia Carr, Joanna Kamińska, Michal Steffl, Tomasz Podgórski","doi":"10.1016/j.jsams.2024.08.209","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.08.209","url":null,"abstract":"This study quantified blood bicarbonate (HCO) kinetics and gastrointestinal upset to determine the gender-related ergogenic potential of sodium bicarbonate (0.15- [], 0.25- [] and 0.35 g·kg []) in high-intensity functional training-trained athletes. Double-blind randomized placebo-controlled crossover. Thirty high-intensity functional training-trained female ( = 14) and male ( = 16) athletes performed two bouts of the Wingate Anaerobic Test (WAnT and WAnT) interspaced with two 3-min bouts of Wall Balls and Burpees (high-intensity functional training performance) 120 min after ingestion of three sodium bicarbonate doses established relative to fat-free mass: , , , and . Blood HCO was determined pre-ingestion; after supplementation and before exercise at: 30-, 60-, 90-, 105-, and 120 min post-ingestion; and at: 3-, 15-, and 45 min post-exercise. Gastrointestinal upset was evaluated 120 min post-ingestion. Control () measurements (no supplementation) were performed. There were significant × interactions for: changes in blood HCO at 60 min post-ingestion ( = 0.014; = 0.104; at 0.15 g·kg males experienced higher increase than females); PP ( = 0.015; = 0.103) and AP ( = 0.005; = 0.124) during WAnT, and changes in PP between Wingate Anaerobic Test bouts ( = 0.049; = 0.081). Sodium bicarbonate compared to had no significant impact on Wall Balls and Burpees performance. The dose of 0.35 g·kg resulted in higher less severe gastrointestinal symptoms compared to and 0.15 g·kg ( = 0.001; = 0.178); and higher total gastrointestinal upset compared to , and 0.15 g·kg ( < 0.001; = 0.323). This study indicated dose- and gender-related differences in extracellular buffering capacity and ergogenic potential of sodium bicarbonate. The study suggested a detrimental impact of gastrointestinal upset on performance.","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The kinetics of cardiac troponin T release during and after 1- and 6-h maximal cycling trials","authors":"Alejandro Legaz-Arrese, Sebastian Sitko, Rafel Cirer-Sastre, Carmen Mayolas-Pi, Romario Rivelino Jiménez-Gaytán, Ricardo Navarro Orocio, Ricardo Lopez García, Pedro Gualberto Morales Corral, Joaquín Reverter-Masia, Keith George, Luis Enrique Carranza-García","doi":"10.1016/j.jsams.2024.08.207","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.08.207","url":null,"abstract":"In this study, the effects of short-duration high-intensity exercise and long-duration exercise on high-sensitivity cardiac troponin T (hs-cTnT) levels were compared. Twelve male amateur cyclists performed 1- and 6-h cycling trials. In both exercise trials, hs-cTnT was assessed at rest, immediately postexercise and at 1, 3, 6, 12, and 24 h postexercise. Additionally, hs-cTnT levels were assessed every hour during the 6-h trial. Exercise resulted in an increase in hs-cTnT levels in all subjects. Circulating hs-cTnT levels increased in both exercise trials ( < 0.001), with higher peak values occurring after the 1-h trial compared with those of the 6-h trial ( = 0.023). The upper reference limit (URL) exceeded 83 % of the participants in the 1-h trial and 42 % of the participants in the 6-h trial. There was substantial individual variability in peak hs-cTnT in both trials. Values of hs-cTnT were greater after exercise than during exercise for the 6-h trial. For both exercise trials, the maximum postexercise hs-cTnT values correlated with the %HR ( = 0.906 for the 1-h trial, = 0.735 for the 6-h trial). For the 1-h trial, the maximum postexercise hs-cTnT values were observed at 3 h in all subjects. No significant difference in the hs-cTnT values was observed for the 6-h trial during the first 12 h postexercise. Our results demonstrated greater hs-cTnT levels in young male participants after a 1-h cycling trial than after a 6-h cycling trial, despite a substantially greater energy expenditure and total external work completed in the 6-h trial. Postexercise hs-cTnT values are associated with relative exercise intensity.","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The “enshittification” of online information services obligates rigorous management of scientific journals","authors":"","doi":"10.1016/j.jsams.2024.08.208","DOIUrl":"10.1016/j.jsams.2024.08.208","url":null,"abstract":"","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Health status and heat preparation at a UCI World Tour multistage cycling race.","authors":"J D Périard, M G Wilson, S T Tebeck, J Stanley, O Girard","doi":"10.1016/j.jsams.2024.08.206","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.08.206","url":null,"abstract":"<p><strong>Objectives: </strong>To assess health status and heat preparation of cyclists at the 2019 Tour Down Under and determine the alignment of heat mitigation strategies with current recommendations.</p><p><strong>Design: </strong>Cohort study.</p><p><strong>Methods: </strong>Twenty-three (17 % participation rate) male World Tour cyclists from five teams and 10 countries completed a pre-competition questionnaire evaluating exertional heat illness (EHI) history, pre-race health status, and heat mitigation and recovery strategies use. Associations between arrival days pre-competition, years as professional, nationality, team, history of EHI symptoms and diagnosis on heat mitigation and recovery strategy utilisation were assessed.</p><p><strong>Results: </strong>65 % of cyclists reported previously experiencing one or more EHI symptom (cramping: 48 %) and 22 % a diagnosis of heat stroke. In the 10 days preceding the race, 26 % experienced one or more illness symptoms. 65 % trained in the heat (acclimatisation 8-25 days; acclimation: 3-7 days), which was associated with team (P = 0.047, ϕ_c = 0.61), nationality (P = 0.009, ϕ_c = 0.86) and EHI symptoms history (P = 0.058, ϕ = 0.43). All cyclists had a hydration plan, with links to team (0.5-1.0 L·h^-1, P = 0.043, ϕ_c = 0.68) and EHI symptom history (1.0-1.5 L·h^-1, P = 0.048, ϕ = 0.476). Most had pre-cooling (87 %) and mid-cooling (83 %) strategies, most commonly cold beverages (75 %) and neck collars (78 %), respectively. All cyclists planned on using at least one recovery strategy (massage: 87 %).</p><p><strong>Conclusions: </strong>Our data indicate good alignment with current recommendations for competing in the heat, particularly for hydration, cooling and recovery strategies. Whilst the proportion of cyclists engaging in heat acclimation/acclimatisation is encouraging, greater awareness on adapting and implementing heat training is required.</p>","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142145895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Injury epidemiology in male and female competitive diving athletes: A four-year observational study","authors":"Benjamin M. Currie, Michael Hetherington, Gordon Waddington, Nicholas A.T. Brown, Michael K. Drew, Jeremy Witchalls, Liam A. Toohey","doi":"10.1016/j.jsams.2024.08.204","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.08.204","url":null,"abstract":"To describe the incidence, severity, burden and sport specific characteristics of injuries reported in elite diving athletes. Descriptive epidemiology study. Medical attention and time-loss injuries from 63 (43 female, 20 male) Australian national diving programme athletes were prospectively collected over four seasons (September 2018–August 2022). Injury incidence rates and injury burden were calculated, standardised per 365 athlete days, and compared across groups using negative binomial generalised linear models. In total 421 injuries were reported (female = 292, male = 129) at an injury incidence rate of 2.36 (95 % confidence interval = 2.14–2.60) per 365 athlete days, which was comparable between sexes (incidence rate ratio = 0.97; 95 % confidence interval = 0.73–1.27, p = 0.807). Annual injury prevalence ranged from 70.0 to 85.1 %. Approximately two-thirds of injuries (n = 283, 67.2 %) resulted in a period of time-loss, at an injury incidence rate of 1.58 (95 % confidence interval = 1.41–1.78). The overall injury burden was 91 days of absence (95 % confidence interval = 81–102) per 365 athlete days. Stress fractures in springboard diving athletes incurred the largest mean days of time-loss compared to other injured tissue types. Majority of injuries were reported to occur during training (n = 334, 79.3 %) as opposed to competition (n = 10, 2.4 %), with more than half (n = 233, 55.3 %) of all reported injuries occurring during pool training sessions. The mechanism of injury was most frequently reported as occurring during either take-off (27.8 %) or water entry (30.4 %). Annual injury prevalence reported in competitive Australian diving athletes was found to be very high. Contrary to existing literature, competitive diving injuries were reported to occur within the daily training environment, with few injuries occurring during competition. Notable differences in the injury profile between springboard and platform competitive diving athletes were observed.","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does high-intensity running to fatigue influence lower limb injury risk?","authors":"Hannah Rice, Chelsea Starbuck, Jasmin Willer, Sam Allen, Christopher Bramah, Richard Jones, Lee Herrington, Jonathan Folland","doi":"10.1016/j.jsams.2024.08.205","DOIUrl":"https://doi.org/10.1016/j.jsams.2024.08.205","url":null,"abstract":"<p><strong>Objectives: </strong>The aim of this study was to quantify changes in peak bending moments at the distal tibia, peak patellofemoral joint contact forces and peak Achilles tendon forces during a high-intensity run to fatigue at middle-distance speed.</p><p><strong>Design: </strong>Observational study.</p><p><strong>Methods: </strong>16 high-level runners (7 female) ran on a treadmill at the final speed achieved during a preceding maximum oxygen uptake test until failure (~3 min). Three-dimensional kinetics and kinematics were used to derive and compare tibial bending moments, patellofemoral joint contact forces and Achilles tendon forces at the start, 33 %, 67 % and the end of the run.</p><p><strong>Results: </strong>Average running speed was 5.7 (0.4) m·s^-1. There was a decrease in peak tibial bending moments (-6.8 %, p = 0.004) from the start to the end of the run, driven by a decrease in peak bending moments due to muscular forces (-6.5 %, p = 0.001), whilst there was no difference in peak bending moments due to joint reaction forces. There was an increase in peak patellofemoral joint forces (+8.9 %, p = 0.026) from the start to the end of the run, but a decrease in peak Achilles tendon forces (-9.1 %, p < 0.001).</p><p><strong>Conclusions: </strong>Running at a fixed, high-intensity speed to failure led to reduced tibial bending moments and Achilles tendon forces, and increased patellofemoral joint forces. Thus, the altered neuromechanics of high-intensity running to fatigue may increase patellofemoral joint injury risk, but may not be a mechanism for tibial or Achilles tendon overuse injury development.</p>","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142145894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}