Journal of Exercise Science & Fitness最新文献

Influence of habitual physical activity on cognitive performance of healthy young adults after passive heat exposure 被动热暴露后习惯性体育活动对健康青年认知能力的影响

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2026-01-01 DOI: 10.1016/j.jesf.2025.200436

Fuhai Zhuo , Reubenjamin J. Gaurani , Ivan C.C. Low , Thomas A. Deshayes , Jason K.W. Lee , Stephen S. Cheung , Pei Ling Choo , Xiang Ren Tan

Objective

Regular physical activity is positively associated with enhanced cognitive performance, whereas excessive heat stress may negatively impact cognition. The role of habitual physical activity on cognitive function under heat stress is unclear. Thus, we investigated the influence of physical activity status on the cognitive performance of healthy individuals after acute passive heat exposure.

Methods

Our study involved non-randomised quasi-experimental controlled trials where 28 participants (active: n = 13, 4 females, less-active: n = 15, 5 females) underwent 45-min hot water immersion (HWI). Participants immersed their lower limbs in 42 °C water in a seated position for 15 min before they wore a disposable raincoat and continued immersion for 30 min. Estimated core temperature via non-invasive CORE sensor, heart rate, ratings of thermal sensation and thermal comfort were monitored. Pre- and post-immersion, the participants performed Stroop test and Iowa gambling task (IGT) to assess selective attention, executive function and decision-making.

Results

After HWI, both active and less-active participants attained hyperthermia (38.5 ± 0.4 °C and 38.3 ± 0.4 °C, respectively; p = 0.247). During HWI, the heart rate profiles, and subjective ratings were not different between groups regardless of physical activity status. Both groups exhibited faster reaction times and preserved accuracies in the Stroop test post-HWI, with no performance differences between groups. Similarly, for IGT, both active and less-active groups exhibited improved net scores post-HWI with no differences between groups.

Conclusion

When exposed to modest levels of heat strain (≤38.5 °C), both physically active and less-active groups did not show impairment in executive function and risk-taking behaviour.

目的：规律的身体活动与认知能力的增强呈正相关，而过度的热应激可能对认知能力产生负面影响。热应激下习惯性体育活动对认知功能的作用尚不清楚。因此，我们研究了急性被动热暴露后身体活动状况对健康个体认知表现的影响。方法本研究纳入非随机准实验对照试验，28名参与者（积极参与者：n = 13,4名女性，不积极参与者：n = 15,5名女性）接受45分钟热水浸泡（HWI）。参与者以坐姿将下肢浸入42°C的水中15分钟，然后穿着一次性雨衣，继续浸泡30分钟。通过无创core传感器估计核心温度、心率、热感觉评分和热舒适进行监测。在浸泡前和浸泡后，参与者分别进行Stroop测试和爱荷华赌博任务（IGT）来评估选择性注意、执行功能和决策能力。结果HWI后，活跃和不活跃的参与者均获得热疗（分别为38.5±0.4°C和38.3±0.4°C, p = 0.247）。在HWI期间，无论身体活动状况如何，两组之间的心率概况和主观评分没有差异。两组在hwi后的Stroop测试中都表现出更快的反应时间和准确性，两组之间没有表现差异。同样，对于IGT，活跃组和不活跃组在hwi后均表现出改善的净得分，组间无差异。结论当暴露于适度的热应变（≤38.5°C）时，运动组和不运动组的执行功能和冒险行为均未出现损害。

{"title":"Influence of habitual physical activity on cognitive performance of healthy young adults after passive heat exposure","authors":"Fuhai Zhuo , Reubenjamin J. Gaurani , Ivan C.C. Low , Thomas A. Deshayes , Jason K.W. Lee , Stephen S. Cheung , Pei Ling Choo , Xiang Ren Tan","doi":"10.1016/j.jesf.2025.200436","DOIUrl":"10.1016/j.jesf.2025.200436","url":null,"abstract":"<div><h3>Objective</h3><div>Regular physical activity is positively associated with enhanced cognitive performance, whereas excessive heat stress may negatively impact cognition. The role of habitual physical activity on cognitive function under heat stress is unclear. Thus, we investigated the influence of physical activity status on the cognitive performance of healthy individuals after acute passive heat exposure.</div></div><div><h3>Methods</h3><div>Our study involved non-randomised quasi-experimental controlled trials where 28 participants (active: n = 13, 4 females, less-active: n = 15, 5 females) underwent 45-min hot water immersion (HWI). Participants immersed their lower limbs in 42 °C water in a seated position for 15 min before they wore a disposable raincoat and continued immersion for 30 min. Estimated core temperature via non-invasive CORE sensor, heart rate, ratings of thermal sensation and thermal comfort were monitored. Pre- and post-immersion, the participants performed Stroop test and Iowa gambling task (IGT) to assess selective attention, executive function and decision-making.</div></div><div><h3>Results</h3><div>After HWI, both active and less-active participants attained hyperthermia (38.5 ± 0.4 °C and 38.3 ± 0.4 °C, respectively; <em>p</em> = 0.247). During HWI, the heart rate profiles, and subjective ratings were not different between groups regardless of physical activity status. Both groups exhibited faster reaction times and preserved accuracies in the Stroop test post-HWI, with no performance differences between groups. Similarly, for IGT, both active and less-active groups exhibited improved net scores post-HWI with no differences between groups.</div></div><div><h3>Conclusion</h3><div>When exposed to modest levels of heat strain (≤38.5 °C), both physically active and less-active groups did not show impairment in executive function and risk-taking behaviour.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200436"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880301","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

Is non-adherence to Canadian 24-h movement guidelines associated with emotional and behavioral difficulties in Brazilian adolescents? 不遵守加拿大24小时运动指南与巴西青少年的情绪和行为困难有关吗？

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2026-01-01 DOI: 10.1016/j.jesf.2025.200437

Maria Carolina Juvêncio Francisquini , Pedro Henrique Garcia Dias , Thais Maria de Souza Silva , Géssika Castilho dos Santos , Aristides M. Machado Rodrigues , Jeffer Eidi Sasaki , Bruno Gonçalves Galdino da Costa , Antonio Stabelini Neto

Objective

This study examined the individual and combined association between meeting the 24-h movement guidelines with emotional and behavioral difficulties in Brazilian adolescents.

Methods

The study included 815 adolescents (52 % female), aged 11–15 years (mean age: 13.43 years), enrolled in public schools from Jacarezinho, Paraná, Brazil. Sleep duration (SLP) was assessed using the Pittsburgh Sleep Quality Index questionnaire. Screen time (ST) was assessed by self-reported daily use of electronic devices during the leisure time. Physical activity (PA) was measured by accelerometer. Mental health difficulties were assessed using the Strengths and Difficulties Questionnaire. Statistical analyses were performed using generalized linear models, adjusted for age, gender, mother's education level, medication use, and BMI.

Results

Findings showed that non-adherence to the ST guideline was associated with higher symptoms of hyperactivity/inattention (β: 1.22; 95 % CI: 1.05; 1.41; n = 815), and non-adherence to the SLP guideline was associated with higher total difficulties (β: 1.08; 95 % CI: 1.00; 1.16; n = 815). Combined analyses indicated significant associations between non-adherence to the PA + ST guidelines with higher emotional symptoms (β: 1.73; 95 % CI: 1.06; 2.83; n = 349), while non-adherence to the ST + SLP was associated with hyperactivity/inattention symptoms (β: 1.32; 95 % CI: 1.07; 1.62; n = 815).

Conclusion

Non-adherence to the 24-h movement guidelines was associated with higher symptoms of emotional and behavioral difficulties. Understanding adolescents’ lifestyles is crucial for developing efficient policies that enhance mental health among youth.

目的本研究考察了巴西青少年24小时运动指南与情绪和行为困难之间的个体和组合关系。方法研究对象为巴西帕拉纳 Jacarezinho公立学校入学的815名青少年（52%为女性），年龄11-15岁，平均年龄13.43岁。睡眠时间（SLP）采用匹兹堡睡眠质量指数问卷进行评估。屏幕时间（ST）是通过自我报告在闲暇时间每天使用电子设备来评估的。用加速度计测量身体活动（PA）。使用优势与困难问卷评估心理健康困难。采用广义线性模型进行统计分析，并根据年龄、性别、母亲受教育程度、用药情况和BMI进行调整。结果发现，不遵守ST指南与较高的多动/注意力不集中症状相关（β: 1.22; 95% CI: 1.05; 1.41; n = 815），不遵守SLP指南与较高的总困难相关（β: 1.08; 95% CI: 1.00; 1.16; n = 815）。综合分析表明，不遵守PA + ST指南与较高情绪症状之间存在显著关联（β: 1.73; 95% CI: 1.06; 2.83; n = 349），而不遵守ST + SLP指南与多动/注意力不集中症状相关（β: 1.32; 95% CI: 1.07; 1.62; n = 815）。结论不遵守24小时运动指南与较高的情绪和行为困难症状相关。了解青少年的生活方式对于制定有效的政策以促进青少年的心理健康至关重要。

{"title":"Is non-adherence to Canadian 24-h movement guidelines associated with emotional and behavioral difficulties in Brazilian adolescents?","authors":"Maria Carolina Juvêncio Francisquini , Pedro Henrique Garcia Dias , Thais Maria de Souza Silva , Géssika Castilho dos Santos , Aristides M. Machado Rodrigues , Jeffer Eidi Sasaki , Bruno Gonçalves Galdino da Costa , Antonio Stabelini Neto","doi":"10.1016/j.jesf.2025.200437","DOIUrl":"10.1016/j.jesf.2025.200437","url":null,"abstract":"<div><h3>Objective</h3><div>This study examined the individual and combined association between meeting the 24-h movement guidelines with emotional and behavioral difficulties in Brazilian adolescents.</div></div><div><h3>Methods</h3><div>The study included 815 adolescents (52 % female), aged 11–15 years (mean age: 13.43 years), enrolled in public schools from Jacarezinho, Paraná, Brazil. Sleep duration (SLP) was assessed using the Pittsburgh Sleep Quality Index questionnaire. Screen time (ST) was assessed by self-reported daily use of electronic devices during the leisure time. Physical activity (PA) was measured by accelerometer. Mental health difficulties were assessed using the Strengths and Difficulties Questionnaire. Statistical analyses were performed using generalized linear models, adjusted for age, gender, mother's education level, medication use, and BMI.</div></div><div><h3>Results</h3><div>Findings showed that non-adherence to the ST guideline was associated with higher symptoms of hyperactivity/inattention (β: 1.22; 95 % CI: 1.05; 1.41; n = 815), and non-adherence to the SLP guideline was associated with higher total difficulties (β: 1.08; 95 % CI: 1.00; 1.16; n = 815). Combined analyses indicated significant associations between non-adherence to the PA + ST guidelines with higher emotional symptoms (β: 1.73; 95 % CI: 1.06; 2.83; n = 349), while non-adherence to the ST + SLP was associated with hyperactivity/inattention symptoms (β: 1.32; 95 % CI: 1.07; 1.62; n = 815).</div></div><div><h3>Conclusion</h3><div>Non-adherence to the 24-h movement guidelines was associated with higher symptoms of emotional and behavioral difficulties. Understanding adolescents’ lifestyles is crucial for developing efficient policies that enhance mental health among youth.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200437"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880300","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

Exercise improves physical function in young women with functional ankle instability: a randomized controlled trial of 8-week structured high-intensity circuit training on balance, ankle function, and physical fitness 运动可以改善患有功能性踝关节不稳定的年轻女性的身体功能：一项为期8周的结构化高强度循环训练的随机对照试验，对平衡、踝关节功能和身体健康进行了影响

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-12-29 DOI: 10.1016/j.jesf.2025.200439

Qianwen Liao, Borui Zhang, Yuan Fang, Chen Zheng, Fenghua Sun

Background

Prolonged sedentary behavior in women is associated with weakened lower-body musculature and increased risk of falls and injury. Although high-intensity circuit training (HICT) has been reported to effectively improve aerobic and anaerobic fitness in previously inactive individuals, few studies have evaluated its effectiveness in young women with functional ankle instability (FAI).

Objective

We aimed to evaluate the effect of an 8-week HICT program on balance, ankle stability, and physical fitness in sedentary young women with FAI.

Method

This randomized controlled trial included 96 sedentary young women with FAI (aged 18–30 years, Cumberland Ankle Instability Tool (CAIT) < 25), who were randomly assigned to the HICT (n = 54) or control (n = 42) groups. The HICT group completed an 8-week program (3 sessions/week) with progressive intensity stages, whereas the control group maintained routine activity. A battery of outcomes was assessed before and after the intervention. The primary outcomes included objectively measured balance function and perceived ankle stability, whereas the secondary outcomes included body composition, body circumference, and physical fitness. Repeated-measures analysis of covariance was used to detect the time × group interaction effect, with adjustment for baseline values.

Results

A significant time × group interaction effect (p < 0.05) was observed for balance function and ankle stability (F = 4.732–54.806, η² = 0.048–0.496), body composition (i.e., reductions in hip and thigh circumference: F = 5.092–8.933, η² = 0.061–0.213), and physical fitness (i.e., improvements in back and leg strength, flexibility, upper limb strength, and abdominal strength: F = 7.783–54.806, η² = 0.082–0.386).

Conclusions

An 8-week HICT program appears to effectively improve balance and ankle stability in sedentary young women with FAI, providing preliminary evidence that HICT is a promising intervention for enhancing physical function and reducing the risk of falls and injuries in this population.

背景：女性长时间久坐会导致下半身肌肉组织减弱，增加跌倒和受伤的风险。尽管高强度循环训练（HICT）已被报道能有效改善先前不运动个体的有氧和无氧适应性，但很少有研究评估其对患有功能性踝关节不稳定（FAI）的年轻女性的有效性。目的：我们旨在评估为期8周的HICT项目对久坐的年轻FAI女性患者的平衡、踝关节稳定性和身体健康的影响。方法本随机对照试验纳入96名久坐不动的年轻FAI女性（年龄18-30岁，Cumberland Ankle Instability Tool (CAIT) < 25），随机分为HICT组（n = 54）和对照组（n = 42）。HICT组完成了为期8周的计划（3次/周），并按渐进强度阶段进行，而对照组则保持常规活动。在干预前后对一系列结果进行评估。主要结果包括客观测量的平衡功能和感知的踝关节稳定性，而次要结果包括身体组成、身体围度和身体健康。采用重复测量协方差分析检测时间×组相互作用效应，并对基线值进行调整。结果在平衡功能和踝关节稳定性（F = 4.732-54.806, η2 = 0.048-0.496）、身体组成（即髋部和大腿围围减小：F = 5.092-8.933, η2 = 0.061-0.213）和体能（即背部和腿部力量、柔韧性、上肢力量和腹部力量的改善：F = 7.783-54.806, η2 = 0.082-0.386）方面均存在显著的时间×组交互作用（p < 0.05）。结论：为期8周的HICT计划似乎可以有效地改善久坐的年轻FAI女性患者的平衡和踝关节稳定性，初步证明HICT是一种有希望的干预措施，可以增强这类人群的身体功能，降低跌倒和受伤的风险。

{"title":"Exercise improves physical function in young women with functional ankle instability: a randomized controlled trial of 8-week structured high-intensity circuit training on balance, ankle function, and physical fitness","authors":"Qianwen Liao, Borui Zhang, Yuan Fang, Chen Zheng, Fenghua Sun","doi":"10.1016/j.jesf.2025.200439","DOIUrl":"10.1016/j.jesf.2025.200439","url":null,"abstract":"<div><h3>Background</h3><div>Prolonged sedentary behavior in women is associated with weakened lower-body musculature and increased risk of falls and injury. Although high-intensity circuit training (HICT) has been reported to effectively improve aerobic and anaerobic fitness in previously inactive individuals, few studies have evaluated its effectiveness in young women with functional ankle instability (FAI).</div></div><div><h3>Objective</h3><div>We aimed to evaluate the effect of an 8-week HICT program on balance, ankle stability, and physical fitness in sedentary young women with FAI.</div></div><div><h3>Method</h3><div>This randomized controlled trial included 96 sedentary young women with FAI (aged 18–30 years, Cumberland Ankle Instability Tool (CAIT) < 25), who were randomly assigned to the HICT (n = 54) or control (n = 42) groups. The HICT group completed an 8-week program (3 sessions/week) with progressive intensity stages, whereas the control group maintained routine activity. A battery of outcomes was assessed before and after the intervention. The primary outcomes included objectively measured balance function and perceived ankle stability, whereas the secondary outcomes included body composition, body circumference, and physical fitness. Repeated-measures analysis of covariance was used to detect the time × group interaction effect, with adjustment for baseline values.</div></div><div><h3>Results</h3><div>A significant time × group interaction effect (<em>p</em> < 0.05) was observed for balance function and ankle stability (<em>F</em> = 4.732–54.806, <em>η</em><sup>2</sup> = 0.048–0.496), body composition (i.e., reductions in hip and thigh circumference: <em>F</em> = 5.092–8.933, <em>η</em><sup>2</sup> = 0.061–0.213), and physical fitness (i.e., improvements in back and leg strength, flexibility, upper limb strength, and abdominal strength: <em>F</em> = 7.783–54.806, <em>η</em><sup>2</sup> = 0.082–0.386).</div></div><div><h3>Conclusions</h3><div>An 8-week HICT program appears to effectively improve balance and ankle stability in sedentary young women with FAI, providing preliminary evidence that HICT is a promising intervention for enhancing physical function and reducing the risk of falls and injuries in this population.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 2","pages":"Article 200439"},"PeriodicalIF":2.4,"publicationDate":"2025-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897870","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

Treasured but not measured ?: Impact of the COVID-19 pandemic on physical literacy in children and adolescents 珍惜却不衡量？COVID-19大流行对儿童和青少年身体素养的影响

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-12-16 DOI: 10.1016/j.jesf.2025.200434

John J. Reilly , Kerry Robertson , Farid Bardid

Objective

Physical literacy is treasured because it underpins participation in physical activity and sport in children and adolescents. Physical literacy might have declined following COVID-19 movement restrictions, but whether such a decline took place is uncertain. This study aimed to examine if a post-COVID-19 decline in physical literacy occurred in children and adolescents.

Methods

A systematic review, registered on PROSPERO CRD42025646499 in February 2025, was used to assess changes in physical literacy following the COVID-19 pandemic in healthy, typically developing 3–18 year olds. Searching in June 2025 used 7 databases: Scopus, Web of Science, SPORTDiscus, PsychINFO, CINAHL, PubMed, Sports Medicine & Education Index and a grey literature search in Global Think Tanks.Risk of bias assessment used the Effective Public Health Practice Project (EPHPP) instrument.

Results

Only one eligible study was identified, which reported declining physical literacy in 8–14 year olds in Canada between 2019 and 2020.Evidence quality was moderate as assessed using the EPHPP.

Conclusion

The impact of COVID-19 movement restrictions on physical literacy in children and adolescents could not be assessed due to lack of evidence. The lack of evidence on such an important topic is a valuable finding in itself. Understanding trends in physical literacy will require greater monitoring, and the inclusion of physical literacy measurement in public health surveillance. If physical literacy is really treasured it should be measured.

体育素养受到重视，因为它是儿童和青少年参与体育活动和运动的基础。在COVID-19行动限制之后，身体素养可能有所下降，但这种下降是否发生尚不确定。本研究旨在调查儿童和青少年在2019冠状病毒病后身体素养是否出现下降。方法采用一项于2025年2月在PROSPERO CRD42025646499上注册的系统评价，评估3-18岁健康儿童在2019冠状病毒病大流行后身体读写能力的变化。2025年6月的搜索使用了7个数据库：Scopus， Web of Science, SPORTDiscus, PsychINFO， CINAHL, PubMed， Sports Medicine & Education Index和全球智库的灰色文献搜索。偏倚风险评估采用有效公共卫生实践项目（EPHPP）工具。结果仅确定了一项符合条件的研究，该研究报告称，2019年至2020年期间，加拿大8-14岁儿童的身体素质下降。根据EPHPP评估，证据质量为中等。结论由于缺乏证据，无法评估COVID-19运动限制对儿童和青少年身体素养的影响。在这样一个重要的话题上缺乏证据本身就是一个有价值的发现。了解身体素质的趋势需要加强监测，并将身体素质测量纳入公共卫生监测。如果真的重视身体素质，就应该对其进行测量。

{"title":"Treasured but not measured ?: Impact of the COVID-19 pandemic on physical literacy in children and adolescents","authors":"John J. Reilly , Kerry Robertson , Farid Bardid","doi":"10.1016/j.jesf.2025.200434","DOIUrl":"10.1016/j.jesf.2025.200434","url":null,"abstract":"<div><h3>Objective</h3><div>Physical literacy is treasured because it underpins participation in physical activity and sport in children and adolescents. Physical literacy might have declined following COVID-19 movement restrictions, but whether such a decline took place is uncertain. This study aimed to examine if a post-COVID-19 decline in physical literacy occurred in children and adolescents.</div></div><div><h3>Methods</h3><div>A systematic review, registered on PROSPERO CRD42025646499 in February 2025, was used to assess changes in physical literacy following the COVID-19 pandemic in healthy, typically developing 3–18 year olds. Searching in June 2025 used 7 databases: Scopus, Web of Science, SPORTDiscus, PsychINFO, CINAHL, PubMed, Sports Medicine & Education Index and a grey literature search in Global Think Tanks.Risk of bias assessment used the Effective Public Health Practice Project (EPHPP) instrument.</div></div><div><h3>Results</h3><div>Only one eligible study was identified, which reported declining physical literacy in 8–14 year olds in Canada between 2019 and 2020.Evidence quality was moderate as assessed using the EPHPP.</div></div><div><h3>Conclusion</h3><div>The impact of COVID-19 movement restrictions on physical literacy in children and adolescents could not be assessed due to lack of evidence. The lack of evidence on such an important topic is a valuable finding in itself. Understanding trends in physical literacy will require greater monitoring, and the inclusion of physical literacy measurement in public health surveillance. If physical literacy is really treasured it should be measured.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200434"},"PeriodicalIF":2.4,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786454","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

Relationships between physical activity dimensions and frailty incidence and progression in middle-aged and older adults: A 7-year cohort study 一项为期7年的队列研究：中老年人体力活动维度与虚弱发生率和进展之间的关系

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-12-15 DOI: 10.1016/j.jesf.2025.200435

Kening Xue , Dingsheng Deng , Hongwei Xie , Zhen Bai , Xiaoguang Zhao

Objective

Physical activity (PA) is well-established as a key factor in frailty prevention. However, existing evidence relies predominantly on cross-sectional studies, creating a gap in understanding the long-term impact of PA on frailty progression. This study therefore aimed to investigate the longitudinal associations of multiple PA dimensions with both the incidence and trajectory of frailty in middle-aged and older adults in China.

Methods

This 7-year cohort study included 5916 initially non-frail participants (frailty index, FI < 0.25) from the China Health and Retirement Longitudinal Study. PA was assessed using the International Physical Activity Questionnaire and quantified in terms of frequency, duration, and volume. Frailty was assessed with a validated 40-item FI. The study employed discrete-time survival models to estimate hazard ratios (HRs) for incident frailty (FI ≥ 0.25) and linear mixed-effects models to evaluate the FI trajectory over time.

Results

During the 7-year follow-up, 22.9 % of participants developed frailty. In fully adjusted models, most dimensions of PA (frequency, duration, and volume) demonstrated inverse associations with frailty risk. A clear dose-response relationship was observed, whereby engaging in vigorous-intensity physical activity (VPA) for 1–2 days per week was associated with a 63 % lower risk (Adjusted HR = 0.37). Similarly, even as little as 10–29 min of VPA per day was associated with a 75 % risk reduction (Adjusted HR = 0.25). Higher levels of PA were also significantly associated with a slower annual increase in the FI score (e.g., Adjusted β = −0.0025 for VPA 6–7 days/week). Gender-stratified analyses revealed that the protective association of VPA was more pronounced in men, whereas moderate-intensity physical activity (MPA) was more consistently associated with reduced frailty risk in women.

Conclusion

The findings suggest that regular PA, particularly VPA, is associated with a lower incidence and slower progression of frailty, showing a clear dose-response relationship. Notably, even modest amounts of VPA were associated with substantial protection. The associations appeared to be gender-specific, with the protective association of VPA appearing more pronounced in men and MPA more consistent for women. These findings underscore the critical importance of promoting tailored PA for frailty prevention in aging populations.

目的体育活动（PA）已被公认为是预防虚弱的关键因素。然而，现有的证据主要依赖于横断面研究，在理解PA对衰弱进展的长期影响方面存在差距。因此，本研究旨在探讨多个PA维度与中国中老年人衰弱发生率和轨迹的纵向关联。方法这项为期7年的队列研究纳入了来自中国健康与退休纵向研究的5916名最初非虚弱的参与者（虚弱指数，FI < 0.25）。使用国际身体活动问卷对PA进行评估，并根据频率、持续时间和量进行量化。虚弱程度用40项FI进行评估。该研究采用离散时间生存模型来估计事件脆弱性（FI≥0.25）的风险比（hr），并采用线性混合效应模型来评估FI随时间的变化轨迹。结果在7年的随访中，22.9%的参与者出现虚弱。在完全调整的模型中，PA的大多数维度（频率、持续时间和体积）与脆弱风险呈负相关。观察到明显的剂量-反应关系，即每周进行1-2天的高强度体力活动（VPA）与63%的风险降低相关（调整后的HR = 0.37）。同样，即使每天只有10-29分钟的VPA也与75%的风险降低相关（调整后的HR = 0.25）。较高的PA水平也与FI评分的年增长速度较慢显著相关（例如，VPA 6-7天/周的调整β = - 0.0025）。性别分层分析显示，VPA的保护作用在男性中更为明显，而中等强度的体育活动（MPA）在女性中更一致地与降低虚弱风险相关。结论常规PA，特别是VPA，与脆性发生率低、进展慢相关，呈现明显的剂量-反应关系。值得注意的是，即使是适量的VPA也有实质性的保护作用。这种关联似乎是有性别特征的，VPA的保护作用在男性中更为明显，而MPA在女性中更为一致。这些发现强调了在老年人群中推广量身定制的PA预防虚弱的重要性。

{"title":"Relationships between physical activity dimensions and frailty incidence and progression in middle-aged and older adults: A 7-year cohort study","authors":"Kening Xue , Dingsheng Deng , Hongwei Xie , Zhen Bai , Xiaoguang Zhao","doi":"10.1016/j.jesf.2025.200435","DOIUrl":"10.1016/j.jesf.2025.200435","url":null,"abstract":"<div><h3>Objective</h3><div>Physical activity (PA) is well-established as a key factor in frailty prevention. However, existing evidence relies predominantly on cross-sectional studies, creating a gap in understanding the long-term impact of PA on frailty progression. This study therefore aimed to investigate the longitudinal associations of multiple PA dimensions with both the incidence and trajectory of frailty in middle-aged and older adults in China.</div></div><div><h3>Methods</h3><div>This 7-year cohort study included 5916 initially non-frail participants (frailty index, FI < 0.25) from the China Health and Retirement Longitudinal Study. PA was assessed using the International Physical Activity Questionnaire and quantified in terms of frequency, duration, and volume. Frailty was assessed with a validated 40-item FI. The study employed discrete-time survival models to estimate hazard ratios (HRs) for incident frailty (FI ≥ 0.25) and linear mixed-effects models to evaluate the FI trajectory over time.</div></div><div><h3>Results</h3><div>During the 7-year follow-up, 22.9 % of participants developed frailty. In fully adjusted models, most dimensions of PA (frequency, duration, and volume) demonstrated inverse associations with frailty risk. A clear dose-response relationship was observed, whereby engaging in vigorous-intensity physical activity (VPA) for 1–2 days per week was associated with a 63 % lower risk (Adjusted HR = 0.37). Similarly, even as little as 10–29 min of VPA per day was associated with a 75 % risk reduction (Adjusted HR = 0.25). Higher levels of PA were also significantly associated with a slower annual increase in the FI score (e.g., Adjusted β = −0.0025 for VPA 6–7 days/week). Gender-stratified analyses revealed that the protective association of VPA was more pronounced in men, whereas moderate-intensity physical activity (MPA) was more consistently associated with reduced frailty risk in women.</div></div><div><h3>Conclusion</h3><div>The findings suggest that regular PA, particularly VPA, is associated with a lower incidence and slower progression of frailty, showing a clear dose-response relationship. Notably, even modest amounts of VPA were associated with substantial protection. The associations appeared to be gender-specific, with the protective association of VPA appearing more pronounced in men and MPA more consistent for women. These findings underscore the critical importance of promoting tailored PA for frailty prevention in aging populations.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200435"},"PeriodicalIF":2.4,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786461","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

Effects of microcurrent electrical neuromuscular stimulation on recovery of muscle performance after high-intensity sprint and resistance combined training sessions 微电流神经肌肉电刺激对高强度短跑和阻力联合训练后肌肉性能恢复的影响

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-12-11 DOI: 10.1016/j.jesf.2025.200433

Yosuke Hiroshige , Ryusei Yamaguchi , Tomoki Ebato , Ryosuke Kunitomo , Ryosuke Kajitani , Naohiro Shinada , Hajime Kato , Masanobu Wada

Objective

This study examined the effects of microcurrent electrical neuromuscular stimulation (MENS) on recovery of hamstring muscle function after high-intensity sprint and resistance training in male collegiate sprinters.

Design

A double-blinded, randomized, within-subjects crossover trial.

Setting

A university research laboratory.

Participants

Nine athletes underwent a crossover trial, receiving either MENS (for 20 min per day) or placebo treatment for five days during and after three consecutive days of training.

Main outcome measures

Maximum voluntary contraction (MVC) force of hamstring, eccentric force using Nordic hamstring (NH force), jump ability (counter movement jump), muscle soreness using a visual analog scale, muscle flexibility, and muscle contractile properties using tensiomyography, were assessed before training and immediately, 1 day, and 2 days after training.

Results

MENS significantly accelerated recovery of MVC and NH force, muscle contraction velocity, and reduced muscle soreness compared to the placebo (P < 0.05). However, no significant effect was observed on muscle flexibility and jump height recovery.

Conclusions

MENS may be a practical and effective passive recovery strategy to promote performance recovery in sprinters following high-intensity training. The study is the first investigation to evaluate MENS in training context and supports its potential to mitigate overreaching effects and reduce injury risk.

目的探讨微电流神经肌肉电刺激（MENS）对大学男短跑运动员高强度冲刺和阻力训练后腘绳肌功能恢复的影响。设计一项双盲、随机、受试者内交叉试验。大学研究实验室。9名运动员接受了交叉试验，在连续三天的训练期间和之后接受5天的MENS（每天20分钟）或安慰剂治疗。主要结果测量：在训练前、训练后1天和训练后2天评估腘绳肌的最大自主收缩力（MVC）、北欧腘绳肌的偏心力（NH力）、跳跃能力（反动作跳跃）、肌肉酸痛（视觉模拟量表）、肌肉柔韧性和肌肉收缩特性（张力图）。结果与安慰剂相比，smens显著加快了MVC和NH力的恢复，肌肉收缩速度，肌肉酸痛减轻（P < 0.05）。然而，对肌肉柔韧性和起跳高度恢复没有显著影响。结论smens可能是一种实用有效的促进短跑运动员高强度训练后成绩恢复的被动恢复策略。该研究是第一次在训练环境中评估MENS的调查，并支持其减轻过度影响和降低受伤风险的潜力。

{"title":"Effects of microcurrent electrical neuromuscular stimulation on recovery of muscle performance after high-intensity sprint and resistance combined training sessions","authors":"Yosuke Hiroshige , Ryusei Yamaguchi , Tomoki Ebato , Ryosuke Kunitomo , Ryosuke Kajitani , Naohiro Shinada , Hajime Kato , Masanobu Wada","doi":"10.1016/j.jesf.2025.200433","DOIUrl":"10.1016/j.jesf.2025.200433","url":null,"abstract":"<div><h3>Objective</h3><div>This study examined the effects of microcurrent electrical neuromuscular stimulation (MENS) on recovery of hamstring muscle function after high-intensity sprint and resistance training in male collegiate sprinters.</div></div><div><h3>Design</h3><div>A double-blinded, randomized, within-subjects crossover trial.</div></div><div><h3>Setting</h3><div>A university research laboratory.</div></div><div><h3>Participants</h3><div>Nine athletes underwent a crossover trial, receiving either MENS (for 20 min per day) or placebo treatment for five days during and after three consecutive days of training.</div></div><div><h3>Main outcome measures</h3><div>Maximum voluntary contraction (MVC) force of hamstring, eccentric force using Nordic hamstring (NH force), jump ability (counter movement jump), muscle soreness using a visual analog scale, muscle flexibility, and muscle contractile properties using tensiomyography, were assessed before training and immediately, 1 day, and 2 days after training.</div></div><div><h3>Results</h3><div>MENS significantly accelerated recovery of MVC and NH force, muscle contraction velocity, and reduced muscle soreness compared to the placebo (<em>P</em> < 0.05). However, no significant effect was observed on muscle flexibility and jump height recovery.</div></div><div><h3>Conclusions</h3><div>MENS may be a practical and effective passive recovery strategy to promote performance recovery in sprinters following high-intensity training. The study is the first investigation to evaluate MENS in training context and supports its potential to mitigate overreaching effects and reduce injury risk.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200433"},"PeriodicalIF":2.4,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786460","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

The impact of tangeretin combined with whey protein supplementation on body composition and hormonal profiles in elite sprinters: A double-blind RCT 橘皮素联合乳清蛋白补充剂对优秀短跑运动员身体成分和激素特征的影响：一项双盲随机对照试验

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-12-02 DOI: 10.1016/j.jesf.2025.200430

Zhi Cao , Zheng Zhang , Meng Liu

Objective

This study explored the combined effects of tangeretin and whey protein on serum testosterone and cortisol in competitive athletes.

Methods

In a double-blind,controlled trial, 24 elite sprinters were divided into two groups: an experimental group (EXP, n = 12) taking tangeretin (200 mg) and whey protein (19.8 g) daily, and a control group (CTRL, n = 12) taking only whey protein (19.8 g) over four weeks. Weekly and post-intervention tests measured serum testosterone, cortisol, superoxide dismutase (SOD) activity, and adrenocorticotropic hormone (ACTH) levels, along with pre- and post-intervention anthropometric assessments.

Results

After intervention, a significant Time × Group interaction was observed for fat-free mass (FFM), which increased significantly in the EXP but not in the CTRL, with a greater percentage increase in EXP (2.3 % vs. 1.1 %, p = 0.018). Similar interactions were found for fat mass and body fat percentage, which decreased significantly in EXP. For biochemical indicators, no significant Group × Time interactions were found. However, a significant main effect of time was identified for serum testosterone and ACTH, indicating comparable temporal changes in both groups. No significant time or interaction effects were observed for cortisol, T/C ratio and SOD.

Conclusion

Four weeks of combined whey protein and tangeretin supplementation significantly improved body composition in elite sprinters, whereas it did not significantly alter systemic hormonal profiles or antioxidant activity compared to whey protein alone.

目的探讨橘皮素和乳清蛋白对竞技运动员血清睾酮和皮质醇的联合影响。方法采用双盲对照试验，将24名优秀短跑运动员分为两组，试验组（EXP, n = 12）每天服用橘子皮素（200 mg）和乳清蛋白（19.8 g），对照组（CTRL, n = 12）连续4周只服用乳清蛋白（19.8 g）。每周和干预后测试测量血清睾酮、皮质醇、超氧化物歧化酶（SOD）活性和促肾上腺皮质激素（ACTH）水平，以及干预前和干预后的人体测量评估。结果干预后，实验组与对照组的无脂质量（FFM）存在显著的时间×组交互作用，实验组的FFM显著升高，而对照组的FFM无显著升高，其中实验组的FFM升高的百分比更高（2.3% vs. 1.1%, p = 0.018）。脂肪质量和体脂率也存在类似的相互作用，在EXP阶段显著降低。在生化指标方面，未发现显著的组×时间相互作用。然而，时间对血清睾酮和ACTH有显著的主要影响，表明两组的时间变化相似。皮质醇、T/C比值和SOD均无显著的时间效应或交互作用。结论：与单独补充乳清蛋白相比，4周的联合补充乳清蛋白和橘子皮素显著改善了优秀短跑运动员的身体组成，但没有显著改变全身激素水平或抗氧化活性。

{"title":"The impact of tangeretin combined with whey protein supplementation on body composition and hormonal profiles in elite sprinters: A double-blind RCT","authors":"Zhi Cao , Zheng Zhang , Meng Liu","doi":"10.1016/j.jesf.2025.200430","DOIUrl":"10.1016/j.jesf.2025.200430","url":null,"abstract":"<div><h3>Objective</h3><div>This study explored the combined effects of tangeretin and whey protein on serum testosterone and cortisol in competitive athletes.</div></div><div><h3>Methods</h3><div>In a double-blind,controlled trial, 24 elite sprinters were divided into two groups: an experimental group (EXP, n = 12) taking tangeretin (200 mg) and whey protein (19.8 g) daily, and a control group (CTRL, n = 12) taking only whey protein (19.8 g) over four weeks. Weekly and post-intervention tests measured serum testosterone, cortisol, superoxide dismutase (SOD) activity, and adrenocorticotropic hormone (ACTH) levels, along with pre- and post-intervention anthropometric assessments.</div></div><div><h3>Results</h3><div>After intervention, a significant Time × Group interaction was observed for fat-free mass (FFM), which increased significantly in the EXP but not in the CTRL, with a greater percentage increase in EXP (2.3 % vs. 1.1 %, p = 0.018). Similar interactions were found for fat mass and body fat percentage, which decreased significantly in EXP. For biochemical indicators, no significant Group × Time interactions were found. However, a significant main effect of time was identified for serum testosterone and ACTH, indicating comparable temporal changes in both groups. No significant time or interaction effects were observed for cortisol, T/C ratio and SOD.</div></div><div><h3>Conclusion</h3><div>Four weeks of combined whey protein and tangeretin supplementation significantly improved body composition in elite sprinters, whereas it did not significantly alter systemic hormonal profiles or antioxidant activity compared to whey protein alone.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200430"},"PeriodicalIF":2.4,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786455","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

Prospective association between descriptive accelerometer-derived physical behaviour metrics and cardiometabolic risk indicators in Dutch children: The ABCD study 描述性加速度计衍生的身体行为指标与荷兰儿童心脏代谢风险指标之间的前瞻性关联：ABCD研究

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-11-26 DOI: 10.1016/j.jesf.2025.200431

Fawad Taj , J.M.M. Chinapaw , Teatske Altenburg , Tanja Vrijkotte

To better understand which aspects of physical behavior are most critical for health, this study investigated prospective associations between various accelerometer-derived physical activity (PA) and sedentary behaviour (SB) metrics with cardiometabolic risk indicators. We analyzed waist-worn accelerometer data from 114 Dutch children (50 girls), age 8.6 ± 0.4 years, in the Amsterdam Born Children and Development (ABCD) cohort. Physical behavior metrics included volume-based metric (counts per minute [CPM]), time-use metrics (e.g., time spent in different physical behaviour intensities), pattern-based metrics (e.g., fragmentation indices), and intensity gradient. Health indicators, assessed at age 11–12 years, included BMI-standard deviation score (SDS) and a cardiometabolic risk score (MetScore) calculated from BMI, systolic and diastolic blood pressure, high-density lipoprotein, total cholesterol, and triglycerides. Regression analyses were conducted to examine associations between physical behaviour metrics and both BMI-SDS and MetScore.

Linear regression analyses, adjusted for gender and wear time, revealed that more time spent in moderate-to-vigorous physical activity (MVPA), a conventional time-use metric, was significantly associated with lower BMI-SDS (β = −0.02; 95 % CI: 0.03, 0), but not with MetScore. Other physical behavior metrics, including volume-based, pattern-based, and intensity gradient measures, did not show significant associations with either BMI-SDS or MetScore in this cohort. These findings indicate that conventional time-use metrics, particularly MVPA, may be more effective in detecting health associations in small homogenous populations. Future research with larger populations is necessary to determine if alternative metrics provide additional insight into the association between physical behavior and cardiometabolic health.

为了更好地了解身体行为的哪些方面对健康最重要，本研究调查了各种加速度计衍生的身体活动（PA）和久坐行为（SB）指标与心脏代谢风险指标之间的前瞻性关联。我们分析了来自阿姆斯特丹出生儿童和发育（ABCD）队列的114名荷兰儿童（50名女孩）的腰戴加速度计数据，年龄8.6±0.4岁。物理行为指标包括基于体积的指标（每分钟计数[CPM]）、时间使用指标（例如，在不同物理行为强度上花费的时间）、基于模式的指标（例如，碎片指数）和强度梯度。在11-12岁时评估的健康指标包括BMI-标准差评分（SDS）和心脏代谢风险评分（MetScore），该评分由BMI、收缩压和舒张压、高密度脂蛋白、总胆固醇和甘油三酯计算得出。进行回归分析以检验身体行为指标与BMI-SDS和MetScore之间的关联。经性别和穿着时间调整后的线性回归分析显示，花更多时间进行中高强度体育活动（MVPA）（一种传统的时间使用指标）与较低的BMI-SDS显著相关（β = - 0.02; 95% CI: 0.03, 0），但与MetScore无关。在该队列中，其他身体行为指标，包括基于体积的、基于模式的和强度梯度的测量，都没有显示出与BMI-SDS或MetScore的显著关联。这些发现表明，传统的时间使用指标，特别是MVPA，可能更有效地检测小规模同质人群的健康关联。未来有必要对更大的人群进行研究，以确定替代指标是否能进一步了解身体行为与心脏代谢健康之间的关系。

{"title":"Prospective association between descriptive accelerometer-derived physical behaviour metrics and cardiometabolic risk indicators in Dutch children: The ABCD study","authors":"Fawad Taj , J.M.M. Chinapaw , Teatske Altenburg , Tanja Vrijkotte","doi":"10.1016/j.jesf.2025.200431","DOIUrl":"10.1016/j.jesf.2025.200431","url":null,"abstract":"<div><div>To better understand which aspects of physical behavior are most critical for health, this study investigated prospective associations between various accelerometer-derived physical activity (PA) and sedentary behaviour (SB) metrics with cardiometabolic risk indicators. We analyzed waist-worn accelerometer data from 114 Dutch children (50 girls), age 8.6 ± 0.4 years, in the Amsterdam Born Children and Development (ABCD) cohort. Physical behavior metrics included volume-based metric (counts per minute [CPM]), time-use metrics (e.g., time spent in different physical behaviour intensities), pattern-based metrics (e.g., fragmentation indices), and intensity gradient. Health indicators, assessed at age 11–12 years, included BMI-standard deviation score (SDS) and a cardiometabolic risk score (MetScore) calculated from BMI, systolic and diastolic blood pressure, high-density lipoprotein, total cholesterol, and triglycerides. Regression analyses were conducted to examine associations between physical behaviour metrics and both BMI-SDS and MetScore.</div><div>Linear regression analyses, adjusted for gender and wear time, revealed that more time spent in moderate-to-vigorous physical activity (MVPA), a conventional time-use metric, was significantly associated with lower BMI-SDS (β = −0.02; 95 % CI: 0.03, 0), but not with MetScore. Other physical behavior metrics, including volume-based, pattern-based, and intensity gradient measures, did not show significant associations with either BMI-SDS or MetScore in this cohort. These findings indicate that conventional time-use metrics, particularly MVPA, may be more effective in detecting health associations in small homogenous populations. Future research with larger populations is necessary to determine if alternative metrics provide additional insight into the association between physical behavior and cardiometabolic health.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200431"},"PeriodicalIF":2.4,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145681986","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

Corrigendum to “Effects of exercise on blood glucose levels and pregnancy outcomes in women with gestational diabetes mellitus: A meta-analysis and meta-regression” [J Exerc Sci Fitness 23 (4) (2025) 416–425 100412] “运动对妊娠期糖尿病妇女血糖水平和妊娠结局的影响：荟萃分析和荟萃回归”的更正[J]运动科学健身23 (4)(2025)416-425 100412]

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-11-18 DOI: 10.1016/j.jesf.2025.11.006

Li Shu , Ruizhe Jiang , Fang Wang , Yongjin Xu , Ping Wang , Yuanying Ma , Jinxia Pan , Cong Huang

引用次数: 0

Impact of pre- and post-meal exercise on 24-H glucose profiles in young adults who are overweight and obese 餐前和餐后运动对超重和肥胖年轻人24小时血糖谱的影响

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness

Pub Date : 2025-11-17 DOI: 10.1016/j.jesf.2025.200428

Xiaoyuan Zhang, Bingqing Yang, Yilin Ho, Zhanjia Zhang, Dingfeng Wu, Junwei Qian

Objective

This study investigated the long-term effects of pre-meal exercise (PRE) versus post-meal exercise (POST) on glucose homeostasis in young adults who are overweight and obese using continuous glucose monitoring (CGM).

Methods

In this randomized controlled trial, 34 adults (18–35 years) completed a 10-week intervention. The PRE group performed ≥30 min of moderate-intensity aerobic exercise (65 % HRmax) within 60 min before meals, whereas the POST group exercised within 0–90 min after meals, five times weekly. Participants completed two supervised sessions and three self-directed sessions weekly, monitored via heart rate belts. Habitual diets were maintained throughout the study, and physical activity was monitored using ActiGraph 3X accelerometers. Primary outcomes were 24-h CGM metrics; secondary outcomes included physical activity and metabolic indicators. Two-way ANOVA were used.

Results

There is no group × time interactions reached significance for any glucose variability metric, blood biomarker, or cardiovascular parameter (all p > 0.05), confirming comparable efficacy between regimens. Significant time-effect improvements emerged in continuous glucose monitoring metrics (time in range: F = 4.85, p = 0.035) and cardiometabolic parameters (fasting glucose: F = 4.74, p = 0.038; insulin: F = 5.22, p = 0.030; triglyceride: F = 7.41, p = 0.011, systolic blood pressure: F = 4.45, p = 0.043; diastolic blood pressure: F = 15.04, p = 0.001) following the 10-week intervention. There is lower hypoglycemic exposure in the pre-meal group than the post-meal group (time below range, group effect: F = 4.54, p = 0.041), with triglycerides decreasing exclusively in pre-meal group (Δ = −.22 ± .37 mmol/L, p = 0.005). Post-meal exercise showed marginal insulin reduction (Δ = −1.92 μU/mL, p = 0.069).

Conclusions

The 10-week exercise intervention significantly improved continuous glucose monitoring metrics (notably increased time in range) and cardiometabolic parameters (fasting glucose, insulin, blood pressure, triglycerides) without significant group × time interactions. The pre-meal group maintained consistently lower hypoglycemic exposure than the post-meal group. Triglyceride reduction occurred exclusively with pre-meal exercise, while insulin showed a marginal decrease only with post-meal exercise. These findings demonstrate comparable overall efficacy between timing protocols despite selective benefits for specific parameters.

目的研究餐前运动（PRE）和餐后运动（POST）对超重和肥胖年轻人葡萄糖稳态的长期影响。方法在这项随机对照试验中，34名成年人（18-35岁）完成了为期10周的干预。PRE组在餐前60分钟内进行≥30分钟的中等强度有氧运动（65% HRmax），而POST组在餐后0-90分钟内进行运动，每周5次。参与者每周完成两次有监督的训练和三次自我指导的训练，通过心率带进行监测。在整个研究过程中保持习惯性饮食，并使用ActiGraph 3X加速度计监测身体活动。主要结局为24小时CGM指标；次要结局包括身体活动和代谢指标。采用双因素方差分析。结果在任何葡萄糖变异性指标、血液生物标志物或心血管参数方面，没有组×时间相互作用达到显著性（均p >； 0.05），证实了方案之间的可比性疗效。在10周的干预后，连续血糖监测指标（时间范围：F = 4.85, p = 0.035）和心脏代谢参数（空腹血糖：F = 4.74, p = 0.038；胰岛素：F = 5.22, p = 0.030；甘油三酯：F = 7.41, p = 0.011；收缩压：F = 4.45, p = 0.043；舒张压：F = 15.04, p = 0.001）出现了显著的时效改善。餐前组的低血糖暴露低于餐后组（时间低于范围，组效应：F = 4.54, p = 0.041），甘油三酯仅在餐前组下降（Δ =−）。22±。37 mmol/L, p = 0.005)。餐后运动可显著降低胰岛素水平（Δ =−1.92 μU/mL, p = 0.069）。结论10周的运动干预显著改善了连续血糖监测指标（显著增加了监测时间范围）和心脏代谢参数（空腹血糖、胰岛素、血压、甘油三酯），无明显的组间相互作用。餐前组的低血糖暴露始终低于餐后组。甘油三酯的降低只发生在餐前运动中，而胰岛素仅在餐后运动中略有下降。这些发现表明，尽管对特定参数有选择性的益处，但两种定时方案的总体疗效相当。

{"title":"Impact of pre- and post-meal exercise on 24-H glucose profiles in young adults who are overweight and obese","authors":"Xiaoyuan Zhang, Bingqing Yang, Yilin Ho, Zhanjia Zhang, Dingfeng Wu, Junwei Qian","doi":"10.1016/j.jesf.2025.200428","DOIUrl":"10.1016/j.jesf.2025.200428","url":null,"abstract":"<div><h3>Objective</h3><div>This study investigated the long-term effects of pre-meal exercise (PRE) versus post-meal exercise (POST) on glucose homeostasis in young adults who are overweight and obese using continuous glucose monitoring (CGM).</div></div><div><h3>Methods</h3><div>In this randomized controlled trial, 34 adults (18–35 years) completed a 10-week intervention. The PRE group performed ≥30 min of moderate-intensity aerobic exercise (65 % HRmax) within 60 min before meals, whereas the POST group exercised within 0–90 min after meals, five times weekly. Participants completed two supervised sessions and three self-directed sessions weekly, monitored via heart rate belts. Habitual diets were maintained throughout the study, and physical activity was monitored using ActiGraph 3X accelerometers. Primary outcomes were 24-h CGM metrics; secondary outcomes included physical activity and metabolic indicators. Two-way ANOVA were used.</div></div><div><h3>Results</h3><div>There is no group × time interactions reached significance for any glucose variability metric, blood biomarker, or cardiovascular parameter (all p > 0.05), confirming comparable efficacy between regimens. Significant time-effect improvements emerged in continuous glucose monitoring metrics (time in range: F = 4.85, p = 0.035) and cardiometabolic parameters (fasting glucose: F = 4.74, p = 0.038; insulin: F = 5.22, p = 0.030; triglyceride: F = 7.41, p = 0.011, systolic blood pressure: F = 4.45, p = 0.043; diastolic blood pressure: F = 15.04, p = 0.001) following the 10-week intervention. There is lower hypoglycemic exposure in the pre-meal group than the post-meal group (time below range, group effect: F = 4.54, p = 0.041), with triglycerides decreasing exclusively in pre-meal group (Δ = −.22 ± .37 mmol/L, p = 0.005). Post-meal exercise showed marginal insulin reduction (Δ = −1.92 μU/mL, p = 0.069).</div></div><div><h3>Conclusions</h3><div>The 10-week exercise intervention significantly improved continuous glucose monitoring metrics (notably increased time in range) and cardiometabolic parameters (fasting glucose, insulin, blood pressure, triglycerides) without significant group × time interactions. The pre-meal group maintained consistently lower hypoglycemic exposure than the post-meal group. Triglyceride reduction occurred exclusively with pre-meal exercise, while insulin showed a marginal decrease only with post-meal exercise. These findings demonstrate comparable overall efficacy between timing protocols despite selective benefits for specific parameters.</div></div>","PeriodicalId":15793,"journal":{"name":"Journal of Exercise Science & Fitness","volume":"24 1","pages":"Article 200428"},"PeriodicalIF":2.4,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145571126","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