Journal of science and medicine in sport最新文献_第5页

The dangers of predicting ratio standards using multiple regression: A case study using the ratio standard VO2peak (ml·kg−1·min−1) 使用多元回归预测比值标准的危险：使用比值标准vo2峰（ml·kg-1·min-1）的案例研究。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2026-01-01 DOI: 10.1016/j.jsams.2025.08.002

Alan Michael Nevill , João Francisco de Castro Silveira , Anelise Reis Gaya , Cézane Priscila Reuter , Thiago Del Corona Lorenzi , Gustavo Silva , Gabriel Gustavo Bergmann

Objectives

There are numerous examples in the literature where researchers use multiple-regression models to predict ratio standards despite known dangers associated with such methodologies. The solution, to use allometric models, also appears to have been ignored, for example, when predicting cardiorespiratory fitness, using the ratio standard VO_2max (ml·kg⁻¹·min⁻¹).

Design

Cross-sectional.

Methods

This case-study compares a previously published multiple regression equation to predict VO_2peak (ml·kg⁻¹·min⁻¹) that adopted additive predictors of body mass index (kg·m⁻²) and a 6-minute run/walk test, with an alternative multiplicative allometric model given by VO_2peak (l·min⁻¹) = M^k1 · HT^k2 · 6WRT^k3 · exp(a + b · age + c · age²) · ε, thought to provide a more interpretable model, as well as providing a superior quality-of-fit.

Results

The strong association between VO_2peak (l·min⁻¹) and body mass also identified the presence of heteroscedasticity, a characteristic in data that can be resolved using allometry. The allometric model explained over 90 % of the variance (R² = 0.91) compared to less than 60 % (R² = 0.58) reported by the original study. The allometric model's results also appear more interpretable, with a positive mass exponent similar to that previously reported in the literature M^0.66 based on sound physiological grounds. The positive height exponent can also be explained given that taller children have greater lung function. Finally, the age quadratic identified that children's VO_2peak peaks during puberty.

Conclusions

This case study provides powerful evidence that allometric models are more interpretable and provide a superior fit compared with multiple regression models when predicting ratio standards. Note that a simple algebraic adjustment enables researchers to predict the ratio standard VO_2peak (ml·kg⁻¹·min⁻¹) without further analyses.

目的：在文献中有许多例子，研究人员使用多元回归模型来预测比率标准，尽管已知与这种方法相关的危险。使用异速模型的解决方案似乎也被忽视了，例如，在预测心肺健康时，使用比例标准VO2max （ml·kg-1·min-1）。设计:横断面。方法:本案例研究比较先前发表的多重回归方程来预测VO2peak (ml·公斤·最低为1),采用添加剂预测身体质量指数(公斤·m - 2)和一个6分钟的跑步/步行的速度测试,与另一个乘法异速生长的模型由VO2peak (l·最低为1) = Mk1 · HTk2 · 6 wrtk3 · exp( + b · 年龄 + c · age2) · ε,认为提供一个更可说明的模型,以及提供一个优越的配合等级。结果：vo2峰（l·min-1）与体重之间的强相关性也表明了异方差的存在，这是一种可以用异速测量法解决的数据特征。异速生长模型解释了90 %以上的方差（R2 = 0.91），而原始研究报告的方差不足60 % （R2 = 0.58）。异速生长模型的结果似乎也更易于解释，其正质量指数与先前基于良好生理基础的文献M0.66相似。身高指数为正也可以解释为身高较高的儿童肺功能更强。最后，年龄二次曲线发现，儿童的vo2峰值出现在青春期。结论：本案例研究提供了强有力的证据，证明异速生长模型在预测比率标准时比多元回归模型更具可解释性和更好的拟合性。请注意，一个简单的代数调整使研究人员能够预测比例标准vo2峰（ml·kg-1·min-1），而无需进一步分析。

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引用次数: 0

Are exercise booster sessions effective at preserving exercise-induced effects in people with multiple sclerosis? A randomised controlled trial: results from the MSBOOST trial. 在多发性硬化症患者中，运动强化训练是否能有效地保持运动诱导的效果？随机对照试验：来自MSBOOST试验的结果。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-28 DOI: 10.1016/j.jsams.2025.12.013

Laurits Taul-Madsen, L G Hvid, F Sellebjerg, J Romme Christensen, R Ratzer, T Sejbæk, K Bacher Svendsen, V Papp, H Højsgaard Chow, J Lundbye-Jensen, H Dawes, U Dalgas

Objectives: In people with multiple sclerosis (PWMS), exercise improves aerobic capacity and muscle strength which are key components of physical function and overall health status. However, the effects diminish after exercise cessation. Therefore, the present study aimed to investigate whether exercise booster sessions (EBS) could preserve the exercise-induced improvements.

Design: Multicentre RCT.

Methods: Ninety-four PWMS performed 12 weeks of aerobic-training (AT) or resistance-training (RT) and were subsequently randomised to receive EBS (two sessions every fifth week) (ATboost n = 24, RTboost n = 24) or usual-care (ATuc n = 20, or RTuc n = 26) for 40 weeks. The primary outcome was physical function measured as a composite score of the six-minute walk test (6MWT) and five-time sit-to-stand test (5STS). Secondary outcomes were aerobic capacity and muscle strength.

Results: No between-group difference was observed in the composite score of 6MWT and 5STS (arbitrary unit) between ATboost and RTboost 0.00 [-0.20; 0.20]. No between-group difference was observed for aerobic capacity (mL O₂/kg/min) between ATboost and ATuc 1.1 [-1.9; 4.1], although a within-group change was observed for ATboost -1.9 [-4.0; 0.1], but not for ATuc -3.0 [-5.2; -0.8]. No between-group difference was seen for muscle strength (Nm/kg) between RTboost and RTuc -0.04 [-0.36; 0.28]. Also, no within-group change was observed for neither RTboost -0.07 [-0.30; 0.14] nor RTuc -0.04 [-0.27; 0.20].

Conclusions: EBS had no apparent effect on preservation of physical function, aerobic capacity, or muscle strength in PWMS. Muscle strength was preserved regardless of group, whereas only ATboost preserved exercise-induced improvements in aerobic capacity.

目的：在多发性硬化症（PWMS）患者中，运动可以提高有氧能力和肌肉力量，这是身体功能和整体健康状况的关键组成部分。然而，在停止运动后，效果会减弱。因此，本研究旨在探讨运动增强会话（EBS）是否可以保持运动诱导的改善。设计：多中心随机对照试验。方法:九十四pwm执行12 周的有氧训练(在)或耐力(RT)和随后的随机接受EBS(两会每第五周)(ATboost n = 24日RTboost n = 24)或常规治疗(ATuc n = 20,或者RTuc n = 26)40 周。主要终点是身体功能，以6分钟步行测试（6MWT）和5次坐立测试（5STS）的综合得分来衡量。次要结局是有氧能力和肌肉力量。结果：ATboost与RTboost的6MWT、5STS（任意单位）综合评分0.00 [-0.20；0.20]。ATboost和ATuc 1.1在有氧能力（mL O2/kg/min）方面无组间差异[-1.9；4.1]，但ATboost -1.9组内有变化[-4.0；0.1]，但不适合ATuc -3.0 [-5.2；-0.8]。RTboost和RTuc的肌肉力量（Nm/kg）组间无差异-0.04 [-0.36；0.28]。此外，RTboost -0.07 [-0.30；0.14] RTuc -0.04 [-0.27；0.20]。结论：EBS对PWMS患者的身体功能、有氧能力或肌肉力量的保存没有明显的影响。各组均能保持肌肉力量，而只有ATboost能保持运动诱导的有氧能力改善。

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引用次数: 0

Abdominally targeted physical exercises as a therapeutic intervention for inflammatory bowel diseases. 针对腹部的体育锻炼作为炎症性肠病的治疗干预。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-18 DOI: 10.1016/j.jsams.2025.12.011

Lael Werner, Rony Izhar, Morine Fibelman, Izislav Shapiro, Andrei Siderskyi, Yuri Ostrinski, Haim Leibovitzh, Nathaniel Aviv Cohen, Ayal Hirsch, Yulia Ron, Naomi Fliss Isakov, Nitsan Maharshak

Objectives: To examine the effect of routine physical exercises (PhExs) targeted to the abdomen, compared to general exercises, on clinical outcomes, biomarkers, and quality of life (QoL) in patients with inflammatory bowel diseases.

Methods: This randomized, controlled (1:1), double-blind, pilot study assessed the effect of following 15-minute videos of either a specific abdominally targeted PhEx inspired by yoga or non-targeted general exercise, at least 6 times a week, on the disease activity in patients with IBD. Disease activity, inflammatory indices (CRP and fecal calprotectin), and QoL measures (PROMIS-29) were compared before and after 4 weeks of intervention.

Results: Twenty-six patients with mild-to-moderate IBD activity (15 Crohn's disease [CD], 11 ulcerative colitis [UC]) were included in the analysis. At the end of the intervention, most patients with IBD in both arms exhibited significant improvements in their clinical scores. However, clinical remission rates were significantly higher among patients with CD (intervention-75 % vs. control-14 %; p < 0.05), but not with UC. Fecal calprotectin remained stable in the interventional group, while it increased in the control group (change in calprotectin: -1 μg/g vs. +104 μg/g, respectively, p < 0.05). Some of the QoL measures improved compared to baseline but this was not specific to the abdominally targeted exercises.

Conclusions: Performance of daily abdominally targeted physical exercises demonstrated clinical improvement and biomarker stabilization, particularly among patients with CD, despite small sample size and short duration, underscoring the potential benefits of physical exercises and specifically those that activate the abdomen.

目的：研究针对腹部的常规体育锻炼（PhExs）与普通锻炼相比，对炎症性肠病患者的临床结局、生物标志物和生活质量（QoL）的影响。方法：这项随机、对照（1:1）、双盲、试点研究评估了以下15分钟的视频对IBD患者疾病活动的影响，这些视频要么是由瑜伽激发的特定腹部目标PhEx，要么是非目标一般运动，每周至少6次。4 周干预前后比较疾病活动度、炎症指数（CRP和粪钙保护蛋白）和生活质量（promise -29）。结果：26例轻度至中度IBD活动度患者（克罗恩病[CD] 15例，溃疡性结肠炎[UC] 11例）纳入分析。在干预结束时，两组大多数IBD患者的临床评分均有显著改善。然而，CD患者的临床缓解率明显更高（干预组为75% % vs.对照组为14% %；p ）结论：尽管样本量小，持续时间短，但日常腹部定向体育锻炼的表现显示出临床改善和生物标志物稳定，特别是在CD患者中，强调了体育锻炼的潜在益处，特别是那些激活腹部的体育锻炼。

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引用次数: 0

Navigating care and compromise: A qualitative study of medical staff roles in German elite handball. 导航护理与妥协：德国精英手球中医务人员角色的定性研究。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-17 DOI: 10.1016/j.jsams.2025.12.010

Anna K Reussner, Jannika M John

Objectives: This study explores how medical staff in German elite handball interpret their roles in managing athlete health and how they navigate role-related challenges within the performance-driven context of elite sport.

Design: Qualitative study using a constructivist framework, positing that reality is constructed through active engagement with and interpretation of experiences.

Methods: Twenty semi-structured interviews were conducted with doctors and physiotherapists (n = 10 each) working in Germany's elite handball system, including the national team and Bundesliga clubs. A reflexive thematic analysis of the data was conducted, focusing on patterns of meaning to gain a nuanced understanding of the complex role interpretations of medical staff.

Results: We generated five roles for medical staff in elite handball: (1) Decide, (2) Coordinate, (3) Educate, (4) Enable, and (5) Protect. These roles illustrate the interdependence between the visible, compensated work and invisible, often unrecognized work that medical staff perform. Within each role we uncovered tensions between athlete care and performance imperatives. Ethical dilemmas arose in relation to analgesic use and return to sport. Participants described role ambiguity due to unclear boundaries and expectations.

Conclusions: Doctors and physiotherapists in elite handball navigate complex and ethically charged roles. Their unseen labor and boundary work are central to athlete health management but remain under-supported in current sport systems. Recommendations include interdisciplinary communication training, clearer ethical codes, and employing independent medical staffing. Future research should examine cooperative decision-making from multiple perspectives and over time.

目的：本研究探讨德国精英手球医务人员如何解释他们在管理运动员健康方面的角色，以及他们如何在精英运动的成绩驱动背景下应对角色相关的挑战。设计：使用建构主义框架的定性研究，假设现实是通过积极参与和解释经验而构建的。方法：对德国手球精英体系（包括国家队和德甲俱乐部）的医生和物理治疗师各进行20次半结构化访谈（ = 各10人）。对数据进行了反思性专题分析，重点关注意义模式，以细致入微地了解医务人员的复杂角色解释。结果：得出了精英手球运动中医务人员的五个角色：(1)决定，(2)协调，(3)教育，(4)使能，(5)保护。这些作用说明了医务人员有形的有偿工作与无形的、往往不被承认的工作之间的相互依存关系。在每个角色中，我们都发现了运动员护理和表现要求之间的紧张关系。在使用镇痛药和重返运动方面出现了伦理困境。参与者描述了由于界限和期望不明确而导致的角色模糊。结论：在精英手球运动中，医生和物理治疗师扮演着复杂而充满伦理色彩的角色。他们看不见的劳动和边界工作是运动员健康管理的核心，但在当前的体育系统中仍然得不到支持。建议包括跨学科沟通培训、更明确的道德规范和聘用独立的医疗人员。未来的研究应该从多个角度和时间来考察合作决策。

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引用次数: 0

Core temperature responses of male football players during matches in the heat - Associations with physiological and running demands. 男子足球运动员在高温比赛中的核心温度反应——与生理和跑步需求的关系。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-15 DOI: 10.1016/j.jsams.2025.12.009

Edgar Schwarz, Catarina B Oliveira, Monica Duarte Muñoz, Agustín Alanis, Marcela Alanis, Aldo Lara, Alfredo Freeze, Júlio A Costa, Leander Eckerle, Tim Meyer, Rob Duffield

Objectives: This study describes core temperature (T_core) responses during football matches in warm to hot conditions. It aims to identify which physiological, running, and perceptual factors are associated with reaching high T_core values while controlling for environmental conditions and cooling.

Design: Forty highly trained male youth football players participated in at least two out of four matches held at temperatures between 26 and 42 °C. In three matches, heat mitigation strategies (passive rest and 17 °C drinks, or cold towels and 5 °C drinks) were applied pre-match, at half-time, and in additional breaks per half.

Methods: Match running, heart rates, hydration markers, and perceptual responses were measured and checked for associations with peak T_core values via linear mixed models accounting for environmental conditions and heat mitigation strategies.

Results: Peak T_core was 39.2 ± 0.5 °C (range: 37.9-40.1 °C). Higher total distance (β = 0.39 [0.13, 0.64], p = 0.004) and distance at low-to-moderate speeds (β = 0.44 [0.18, 0.69], p = 0.001) were associated with higher peak T_core, while walking distance was inversely associated (β = -0.42 [-0.69, -0.15], p = 0.003). High-speed and sprinting distances were not associated with peak T_core. Higher heart rate (β = 0.37 [0.10, 0.64], p = 0.008), sweat loss (β = 0.38 [0.14, 0.62], p = 0.002) and body mass loss (β = 0.20 [0.00, 0.40], p = 0.047) were also associated with higher peak T_core. Rating-of-fatigue (p = 0.74), perceived exertion (p = 0.78), and thermal sensation (p = 0.98) were not associated with peak T_core.

Conclusions: High T_core peaks were observed in all conditions and were associated with higher heart rate, sweat loss, and match running. Covering more distance at low-to-moderate speed was associated with a higher heat strain, whereas walking more (instead of running) was associated with lower T_core peaks.

目的：本研究描述了在温暖到炎热的条件下足球比赛中的核心温度（Tcore）反应。它旨在确定在控制环境条件和冷却的情况下，哪些生理、运行和感知因素与达到高Tcore值有关。设计：40名训练有素的男性青少年足球运动员参加了四场比赛中的至少两场，比赛温度在26至42 °C之间。在三场比赛中，在赛前、中场休息和每半场额外休息时采用了热缓解策略（被动休息和17次 °C饮料，或冷毛巾和5次 °C饮料）。方法：通过考虑环境条件和热缓解策略的线性混合模型，测量和检查匹配跑步、心率、水合标志物和知觉反应与峰值Tcore值的关联。结果：峰值Tcore为39.2 ± 0.5 °C（范围：37.9-40.1 °C）。更高的总距离(β = 0.39 [0.13,0.64],p = 0.004)和距离速度中度(β = 0.44 [0.18,0.69],p = 0.001)与更高的峰值Tcore有关,而步行距离呈负相关(β = -0.42 [-0.69,-0.15],p = 0.003)。高速和短跑距离与Tcore峰值无关。更高的心率(β = 0.37 [0.10,0.64],p = 0.008),汗水损失(β = 0.38 [0.14,0.62],p = 0.002)和身体质量损失(β = 0.20 [0.00,0.40],p = 0.047)也与更高的峰值Tcore有关。疲劳评分（p = 0.74）、感觉劳累（p = 0.78）和热感觉（p = 0.98）与Tcore峰值无关。结论：在所有条件下都观察到高Tcore峰值，并且与较高的心率，汗水损失和比赛跑步有关。以低到中速跑更多的距离与更高的热应变有关，而走得更多（而不是跑步）与较低的Tcore峰值有关。

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引用次数: 0

Little evidence of cardiac involvement in Mild and Moderate Swimming- Induced Pulmonary Oedema (SIPE). 在轻度和中度游泳引起的肺水肿（SIPE）中几乎没有心脏受累的证据。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-13 DOI: 10.1016/j.jsams.2025.12.005

Anniina Lindqvist, Doug Hacking, Leah Wright, Brian Cowie, Kellie D'Orsa, Michael Gregory, Steve Foulkes, Amy Mitchell, Kristel Janssens, Andre La Gerche

Objectives: Swimming-induced pulmonary oedema (SIPE) is a potentially fatal condition associated with open-water swims. We sought to quantify the contribution of cardiac dysfunction to SIPE.

Design: We aimed to assess the incidence of SIPE during an endurance cold water swim. We determined associations between SIPE and changes in cardiac function through a SIPE questionnaire, lung ultrasound (LUS), cardiac biomarkers (N-Terminal pro-B-type natriuretic peptide (NT proBNP) and cardiac troponin I (cTnI)) and transthoracic echocardiograms (TTE).

Methods: Twenty open-water swimmers (10 males) underwent a TTE, LUS for pulmonary oedema and cardiac biomarkers before, 2-hours and 24-hours after an 8-hour swim. Swimmers had an additional LUS and rated their breathlessness upon leaving the water. Participants with breathlessness and 3 or more B-lines present in two or more LUS views were considered SIPE positive.

Results: Five swimmers (25 % of cohort) presenting with post-event breathlessness and evidence of lung water were considered SIPE positive. SIPE had no demonstrable effect on left systolic function (LV ejection fraction, global longitudinal strain [GLS]), diastolic function (left atrial volume, E/e') and right ventricular (RV) function (RV fractional area change and RV free wall GLS). SIPE was associated with a small increase in troponin post-swim (at 2 hours SIPE+ 32.1 ng/L, SIPE- 12.6 ng/L, p = 0.004: at 24 hours SIPE+ 12.6 ng/L, SIPE- 4.8 ng/L, p = 0.04) but had no impact on NT proBNP.

Conclusions: SIPE is common in open-water swimmers following an endurance swim and is identified using LUS. Whilst SIPE was associated with a small increase in post-swim troponin levels, no further evidence of cardiac dysfunction was identified at two hours after the swim to explain the pulmonary oedema.

目的：游泳引起的肺水肿（SIPE）是一种与开放水域游泳相关的潜在致命疾病。我们试图量化心功能障碍对SIPE的贡献。设计：我们的目的是评估耐力冷水游泳期间SIPE的发生率。我们通过SIPE问卷、肺超声（LUS）、心脏生物标志物（n -末端前b型利钠肽（NT proBNP）和心肌肌钙蛋白I (cTnI)）和经胸超声心动图（TTE）确定SIPE与心功能变化之间的关系。方法：20名开放水域游泳者（10名男性）在游泳前、游泳2小时和游泳8小时后24小时进行TTE、LUS检查肺水肿和心脏生物标志物。游泳者有一个额外的LUS，并在离开水时评估他们的呼吸困难程度。在两个或更多LUS视图中出现呼吸困难和3条或更多b线的参与者被认为是SIPE阳性。结果：5名游泳者（占队列的25% %）出现事件后呼吸困难和肺水的证据，被认为是SIPE阳性。SIPE对左室收缩功能（左室射血分数、总纵应变[GLS]）、舒张功能（左房容积，E/ E′）和右室功能（右室分数面积变化和右室游离壁GLS）无明显影响。轮胎沟槽与肌钙蛋白增加小post-swim(2 小时轮胎沟槽+ 32.1 ng / L,轮胎沟槽- 12.6 ng / L p = 0.004:24 小时轮胎沟槽+ 12.6 ng / L,轮胎沟槽- 4.8 ng / L p = 0.04)但对NT proBNP没有影响。结论：SIPE在开放水域游泳者耐力游泳后很常见，可以用LUS识别。虽然SIPE与游泳后肌钙蛋白水平的小幅增加有关，但在游泳后两小时没有发现进一步的心功能障碍证据来解释肺水肿。

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引用次数: 0

Is it feasible to implement an injury surveillance system for amateur boxing events in Australia? A mixed methods study. 在澳大利亚的业余拳击比赛中实施伤病监测系统是否可行？混合方法研究。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-10 DOI: 10.1016/j.jsams.2025.12.007

Alexander J Alevras, Felicia Kreps, Aleksandar Strkalj, Jim Nguyen, Joel T Fuller, Rebecca Mitchell, Reidar P Lystad

Objectives: To identify facilitators and barriers to implementing an injury surveillance system for amateur boxing in Australia, and to evaluate an implementation trial of an injury surveillance system.

Design: Mixed methods research.

Methods: (1) Semi-structured interviews of key informants from the Australian amateur boxing community (i.e. athletes, coaches, promoters, referees, medical professionals, and boxing governing body officials) were transcribed and subjected to a reflexive thematic analysis. (2) Implementation trial of an injury surveillance system at five amateur boxing events in Australia was evaluated using the reach, effectiveness, adoption, implementation, and maintenance framework indicators; however, the maintenance domain was not evaluated.

Results: Three primary themes were generated in the reflexive thematic analysis: (1) value of data, which included sub-themes on growing the sport, improving athlete performance, and informing educational activities; (2) trust, which was engendered by a strong sense of rapport and connection between the boxing community and the research team; and (3) barriers to implementation, which included sub-themes on fear, resistance to change, and process requirements. The implementation trial involved five amateur boxing events, which comprised a total of 210 registered athletes, of which 181 were eligible to participate in this research. The reach indicator was 81 %, the four effectiveness indicators ranged from 86 % to 100 %, the adoption indicator was 100 %, and implementation indicator was 100 %.

Conclusions: It is feasible to implement an injury surveillance system and obtain good-quality data in the amateur boxing setting in Australia, but there are potential barriers to implementation at scale.

目的：确定在澳大利亚实施业余拳击损伤监测系统的促进因素和障碍，并评估损伤监测系统的实施试验。设计：混合方法研究。方法：(1)对来自澳大利亚业余拳击界的关键信息提供者（即运动员、教练、推广人、裁判、医疗专业人员和拳击管理机构官员）进行半结构化访谈，并进行反身性主题分析。(2)利用框架指标的覆盖范围、有效性、采用、实施和维护，对澳大利亚五项业余拳击赛事的伤害监测系统实施试验进行了评估；然而，维护域没有被评估。结果：反身性主题分析产生了三个主要主题：(1)数据的价值，其中包括发展运动、提高运动员成绩和为教育活动提供信息的子主题；(2)信任，这是由拳击界与研究团队之间的强烈融洽感和联系所产生的；(3)实现的障碍，包括恐惧、抗拒改变和过程需求等子主题。实施试验涉及5个业余拳击项目，共210名注册运动员，其中181人符合参与本研究的条件。达到指标为81 %，4项有效性指标为86 % ~ 100 %，采用指标为100 %，实施指标为100 %。结论：在澳大利亚的业余拳击环境中实施损伤监测系统并获得高质量的数据是可行的，但大规模实施存在潜在的障碍。

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引用次数: 0

Illness is common in trail runners during training: a prospective cohort study. 疾病在越野跑运动员训练期间是常见的：一项前瞻性队列研究。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-10 DOI: 10.1016/j.jsams.2025.12.008

Dina C Christa Janse van Rensburg, Audrey Jansen van Rensburg, Pieter Henk Boer, Precious Serero, Tanita Botha, Marlene Schoeman, Carel Viljoen

Objectives: Trail runners often experience illness during event preparation. We aimed to prospectively determine prevalence, incidence, clinical characteristics, severity (time-loss, burden) and associated illness risk factors amongst South African male and female recreational trail runners of different ages over a 30-week training period.

Design: Prospective cohort.

Methods: Illness and training data from 152 trail runners (120 males, 32 females) were collected every 14 days over 30 weeks using the updated OSTRC-H questionnaire. Illness prevalence (%), incidence (I: per 1000 trail running exposure-days), incidence ratio (IR), severity [% time-loss; illness burden (IB: days lost/1000 trail running exposure-days)], and associated risk factors are reported.

Results: Over 30 weeks, 52 % of runners reported illness, with a mean two-week all-illness prevalence of 10.1 %. The overall illness incidence was 7.2 (95 % CI: 5.7-9.2). The winter-to-summer IR was 1.6 (p = 0.022). Illness incidence in females (I = 9.7) was higher than in males (I = 6.6), with a female:male IR of 1.5 (p < 0.05). Most illnesses affected the respiratory (64.3 %), digestive (15.9 %) and musculoskeletal (5.7 %) systems. Moderate illness severity (8-28 days time-loss) occurred in 29.3 % of runners. The overall IB was 43.2 days lost. BMI ≥25 kg/m² was associated with illness, but no significant illness risk factors were identified via Poisson regression.

Conclusions: During a 30-week training period, 52 % of runners reported illness, with a higher incidence in females. The respiratory tract accounted for >60 % of illnesses. One in three trail runners experienced >one week time-loss. A higher BMI >25 kg/m² was associated with illness. Further research is needed to identify risk factors and develop prevention strategies.

目标：越野跑者在赛事准备过程中经常会生病。我们的目的是在为期30周的训练期间，前瞻性地确定南非不同年龄的男性和女性休闲越野跑者的患病率、发病率、临床特征、严重程度（时间损失、负担）和相关疾病风险因素。设计：前瞻性队列。方法：采用更新后的OSTRC-H问卷，在30 周内每14 天收集152名越野跑者（男性120人，女性32人）的疾病和训练数据。患病率（%）、发病率（I：每1000个跑步暴露日）、发病率比（IR）、严重程度[时间损失%]；疾病负担（IB：损失天数/1000跑步暴露天数）)，以及相关的危险因素。结果：在30 周内，52. %的跑步者报告了疾病，平均两周的全疾病患病率为10. %。总发病率为7.2（95 % CI: 5.7-9.2）。冬夏IR为1.6 （p = 0.022）。女性发病率（I = 9.7）高于男性（I = 6.6），其中女性：男性IR为1.5 （p 2与疾病相关），但泊松回归未发现显著的疾病危险因素。结论：在30周的训练期间，52% %的跑步者报告了疾病，女性发病率更高。呼吸道疾病占所有疾病的60%。三分之一的越野跑者在一周内经历了100英镑的时间损失。较高的BMI指数bbb25 kg/m2与疾病相关。需要进一步研究以确定风险因素并制定预防战略。

{"title":"Illness is common in trail runners during training: a prospective cohort study.","authors":"Dina C Christa Janse van Rensburg, Audrey Jansen van Rensburg, Pieter Henk Boer, Precious Serero, Tanita Botha, Marlene Schoeman, Carel Viljoen","doi":"10.1016/j.jsams.2025.12.008","DOIUrl":"https://doi.org/10.1016/j.jsams.2025.12.008","url":null,"abstract":"Objectives: Trail runners often experience illness during event preparation. We aimed to prospectively determine prevalence, incidence, clinical characteristics, severity (time-loss, burden) and associated illness risk factors amongst South African male and female recreational trail runners of different ages over a 30-week training period.Design: Prospective cohort.Methods: Illness and training data from 152 trail runners (120 males, 32 females) were collected every 14 days over 30 weeks using the updated OSTRC-H questionnaire. Illness prevalence (%), incidence (I: per 1000 trail running exposure-days), incidence ratio (IR), severity [% time-loss; illness burden (IB: days lost/1000 trail running exposure-days)], and associated risk factors are reported.Results: Over 30 weeks, 52 % of runners reported illness, with a mean two-week all-illness prevalence of 10.1 %. The overall illness incidence was 7.2 (95 % CI: 5.7-9.2). The winter-to-summer IR was 1.6 (p = 0.022). Illness incidence in females (I = 9.7) was higher than in males (I = 6.6), with a female:male IR of 1.5 (p < 0.05). Most illnesses affected the respiratory (64.3 %), digestive (15.9 %) and musculoskeletal (5.7 %) systems. Moderate illness severity (8-28 days time-loss) occurred in 29.3 % of runners. The overall IB was 43.2 days lost. BMI ≥25 kg/m2 was associated with illness, but no significant illness risk factors were identified via Poisson regression.Conclusions: During a 30-week training period, 52 % of runners reported illness, with a higher incidence in females. The respiratory tract accounted for >60 % of illnesses. One in three trail runners experienced >one week time-loss. A higher BMI >25 kg/m2 was associated with illness. Further research is needed to identify risk factors and develop prevention strategies.","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145800599","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}

引用次数: 0

Playing Australian football on artificial turf: what do the players think? 在人造草坪上踢澳大利亚足球：球员们怎么想？

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-06 DOI: 10.1016/j.jsams.2025.12.006

Dara M Twomey, Lauren A Petrass, Marlon S Gonsalves

Objectives: To investigate Australian Football players' perceptions of the safety and performance attributes of artificial turf, considering the influences of gender, surface composition, level of exposure and injury status.

Design: Cross-sectional.

Methods: Senior male and female Australian Football players, 18-35 years, from two clubs training and competing on artificial turf were invited to participate. Players completed a validated and reliable questionnaire assessing their perceptions of physical performance and injury risk on artificial turf.

Results: 118 community-level Australian Football players completed the questionnaire: 68 males and 50 females. Overall, players preferred artificial turf in wet conditions (57.3 %) and natural turf in dry conditions (71.4 %). Natural turf was also favoured for competition (82.2 %) and training (55.0 %). Females and individuals with greater exposure - defined by the frequency of turf interactions - preferred artificial turf for training, and wet conditions (p < 0.05). Gender (p = 0.031) and injury status (p = 0.008) significantly impacted performance-related perceptions. Players' preferences and their perceptions of performance and injury risk were significantly influenced by the surface composition (p < 0.001). Skin-related injuries (48.3 %) were the most commonly self-reported injury. Significant differences in injury likelihood and/or severity statements were found when analysed by gender (p = 0.011), exposure (p < 0.001), injury status (p < 0.05) and surface composition (p < 0.05).

Conclusions: These findings demonstrate that player perceptions of artificial turf are influenced not only by surface composition but also by individual experiences and biases. By recognising and responding to these individual factors, stakeholders in the Australian Football community can refine their approaches to encourage acceptance and adoption of artificial turf.

目的：调查澳大利亚足球运动员对人造草坪的安全性和性能属性的看法，考虑性别、表面成分、暴露水平和受伤状况的影响。设计:横断面。方法：邀请来自两家俱乐部的18-35岁 年龄的高级男女澳大利亚足球运动员在人造草坪上训练和比赛。球员们完成了一份有效可靠的问卷，评估他们在人造草坪上的身体表现和受伤风险。结果：118名社区澳式足球运动员完成问卷，其中男性68名，女性50名。总的来说，球员在潮湿条件下更喜欢人造草皮（57.3% %），在干燥条件下更喜欢天然草皮（71.4% %）。天然草皮也被用于比赛（82.2 %）和训练（55.0 %）。与草皮接触频率较高的女性和个人更喜欢在训练中使用人造草皮和潮湿的条件（p ）。结论：这些发现表明，球员对人造草皮的看法不仅受到草皮成分的影响，还受到个人经验和偏见的影响。通过认识和应对这些个体因素，澳大利亚足球界的利益相关者可以改进他们的方法，以鼓励接受和采用人造草坪。

{"title":"Playing Australian football on artificial turf: what do the players think?","authors":"Dara M Twomey, Lauren A Petrass, Marlon S Gonsalves","doi":"10.1016/j.jsams.2025.12.006","DOIUrl":"https://doi.org/10.1016/j.jsams.2025.12.006","url":null,"abstract":"Objectives: To investigate Australian Football players' perceptions of the safety and performance attributes of artificial turf, considering the influences of gender, surface composition, level of exposure and injury status.Design: Cross-sectional.Methods: Senior male and female Australian Football players, 18-35 years, from two clubs training and competing on artificial turf were invited to participate. Players completed a validated and reliable questionnaire assessing their perceptions of physical performance and injury risk on artificial turf.Results: 118 community-level Australian Football players completed the questionnaire: 68 males and 50 females. Overall, players preferred artificial turf in wet conditions (57.3 %) and natural turf in dry conditions (71.4 %). Natural turf was also favoured for competition (82.2 %) and training (55.0 %). Females and individuals with greater exposure - defined by the frequency of turf interactions - preferred artificial turf for training, and wet conditions (p < 0.05). Gender (p = 0.031) and injury status (p = 0.008) significantly impacted performance-related perceptions. Players' preferences and their perceptions of performance and injury risk were significantly influenced by the surface composition (p < 0.001). Skin-related injuries (48.3 %) were the most commonly self-reported injury. Significant differences in injury likelihood and/or severity statements were found when analysed by gender (p = 0.011), exposure (p < 0.001), injury status (p < 0.05) and surface composition (p < 0.05).Conclusions: These findings demonstrate that player perceptions of artificial turf are influenced not only by surface composition but also by individual experiences and biases. By recognising and responding to these individual factors, stakeholders in the Australian Football community can refine their approaches to encourage acceptance and adoption of artificial turf.","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145846787","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}

引用次数: 0

Longitudinal associations of screen time, sleep duration, and physical activity with health and developmental outcomes of Australian children: a compositional and isotemporal analysis. 屏幕时间、睡眠时间和身体活动与澳大利亚儿童健康和发展结果的纵向关联：一项组成和等时间分析。

IF 3.4 2区医学 Q1 SPORT SCIENCES

Journal of science and medicine in sport

Pub Date : 2025-12-05 DOI: 10.1016/j.jsams.2025.12.002

Elahe Nikooharf Salehi, Charlotte Brakenridge, Saeed Jaydarifard, Gregore Iven Mielke

Objectives: To examine associations between 24-hour movement composition in primary school-aged children and later BMI, quality of life, and behavioural outcomes, and to assess the impact of reallocating time between behaviours.

Design: Longitudinal study.

Methods: Data from waves 3, 6, and 7 of the Longitudinal Study of Australian Children (n = 2064; 47 % girls; aged 5 to 12) were analysed. Movement behaviours (screen time, sleep, and physical activity) assessed at ages 5 and 10 were treated as exposures, and follow-up outcomes at ages 10 and 12 included BMI, health-related quality of life (PedsQL), and behavioural difficulties (SDQ). Compositional data analysis examined the longitudinal associations between movement behaviour composition and these outcomes, whilst isotemporal substitution analysis estimated the effects of reallocating 30 min between behaviours.

Results: Compositional analysis showed that higher screen time at age 5 was associated with higher BMI, lower quality of life, and more behavioural difficulties at ages 10 and 12. In contrast, more physical activity and longer sleep at age 5 were associated with lower BMI, higher quality of life, and fewer behavioural problems later in childhood. Isotemporal substitution analysis revealed that replacing 30 min of screen time with physical activity or sleep improved outcomes: lowering BMI, enhancing quality of life, and reducing behavioural difficulties at follow-up.

Conclusions: Shifts in daily movement behaviour composition are associated with key health outcomes in children. These findings support the need for integrated public health strategies that reduce screen time, encourage physical activity, and promote healthy sleep to improve well-being.

目的：研究小学学龄儿童24小时运动组成与后来的BMI、生活质量和行为结果之间的关系，并评估在行为之间重新分配时间的影响。设计：纵向研究。方法：对澳大利亚儿童纵向研究（n = 2064；47 %女孩；5 - 12岁）的第3、6和7波数据进行分析。在5岁和10岁时评估的运动行为（屏幕时间、睡眠和身体活动）被视为暴露，10岁和12岁时的随访结果包括BMI、健康相关生活质量（PedsQL）和行为困难（SDQ）。组成数据分析检查了运动行为组成与这些结果之间的纵向关联，而等时间替代分析估计了在行为之间重新分配30 min的影响。结果：成分分析显示，5岁时屏幕时间越长，10岁和12岁时BMI越高，生活质量越低，行为困难越多。相比之下，5岁时更多的体力活动和更长的睡眠时间与更低的身体质量指数、更高的生活质量和更少的童年行为问题有关。等时间替代分析显示，用体育活动或睡眠代替30 分钟的屏幕时间可以改善结果：降低BMI，提高生活质量，减少随访时的行为困难。结论：儿童日常运动行为构成的改变与关键健康结果相关。这些发现支持需要采取综合公共卫生战略，减少屏幕时间，鼓励体育活动，促进健康睡眠，以改善福祉。

{"title":"Longitudinal associations of screen time, sleep duration, and physical activity with health and developmental outcomes of Australian children: a compositional and isotemporal analysis.","authors":"Elahe Nikooharf Salehi, Charlotte Brakenridge, Saeed Jaydarifard, Gregore Iven Mielke","doi":"10.1016/j.jsams.2025.12.002","DOIUrl":"https://doi.org/10.1016/j.jsams.2025.12.002","url":null,"abstract":"Objectives: To examine associations between 24-hour movement composition in primary school-aged children and later BMI, quality of life, and behavioural outcomes, and to assess the impact of reallocating time between behaviours.Design: Longitudinal study.Methods: Data from waves 3, 6, and 7 of the Longitudinal Study of Australian Children (n = 2064; 47 % girls; aged 5 to 12) were analysed. Movement behaviours (screen time, sleep, and physical activity) assessed at ages 5 and 10 were treated as exposures, and follow-up outcomes at ages 10 and 12 included BMI, health-related quality of life (PedsQL), and behavioural difficulties (SDQ). Compositional data analysis examined the longitudinal associations between movement behaviour composition and these outcomes, whilst isotemporal substitution analysis estimated the effects of reallocating 30 min between behaviours.Results: Compositional analysis showed that higher screen time at age 5 was associated with higher BMI, lower quality of life, and more behavioural difficulties at ages 10 and 12. In contrast, more physical activity and longer sleep at age 5 were associated with lower BMI, higher quality of life, and fewer behavioural problems later in childhood. Isotemporal substitution analysis revealed that replacing 30 min of screen time with physical activity or sleep improved outcomes: lowering BMI, enhancing quality of life, and reducing behavioural difficulties at follow-up.Conclusions: Shifts in daily movement behaviour composition are associated with key health outcomes in children. These findings support the need for integrated public health strategies that reduce screen time, encourage physical activity, and promote healthy sleep to improve well-being.","PeriodicalId":16992,"journal":{"name":"Journal of science and medicine in sport","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145751777","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}

引用次数: 0