Christina Birch Meiner, Caroline Eckert, Charlotte Sandager Aggestrup, Kristina Pfeffer, Sofie Koch, Cecilie Thøgersen-Ntoumani, Nikos Ntoumanis, Peter Krustrup, Malte Nejst Larsen
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Before and after the 10-wk intervention period resting heart rate and blood pressure, body composition, postural balance, standing long jump and performance on the Yo-Yo intermittent recovery level 1 children's test (YYIR1C) were measured. Group effects for all outcome variables were tested using multi-level linear mixed models.</p><p><strong>Results: </strong>The group effect analyses showed no significant differences between FFT and CON in the YYIR1C test (<i>p</i> = 0.080). A significant small difference between groups was found in resting heart rate (<i>d</i> = 0.29, <i>p</i> = 0.039) in favour of FFT. No significant between-group differences were observed in body composition, or the remaining cardiovascular or physical fitness variables (<i>p >0.05</i>).</p><p><strong>Conclusion: </strong>The lack of significant effects for the majority of the outcome measures calls for further development and long-term testing of the programme.</p>","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1480-1489"},"PeriodicalIF":2.5000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"FIT FIRST teen - a cluster RCT evaluating the effects of a 10-week high-intensity exercise intervention for 12-15-yr-old school children.\",\"authors\":\"Christina Birch Meiner, Caroline Eckert, Charlotte Sandager Aggestrup, Kristina Pfeffer, Sofie Koch, Cecilie Thøgersen-Ntoumani, Nikos Ntoumanis, Peter Krustrup, Malte Nejst Larsen\",\"doi\":\"10.1080/02640414.2025.2505380\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objectives: </strong>To evaluate the effects of a 10-week thrice-weekly FIT FIRST Teen (FFT) intervention on cardiorespiratory fitness in Danish 12-15-years-olds.</p><p><strong>Design: </strong>A cluster-randomised controlled study.</p><p><strong>Participants: </strong>One thousand four hundred and seventeen Danish pupils (51.1% female) from 15 municipal schools, allocated to an intervention group (FFT: <i>n</i> = 994, 13.5 (0.6) years (mean (SD)), 165.8 (8.7) cm, 57.8 (13.4) kg) or a usual practice control group (CON: <i>n</i> = 423, 13.8 (0.8) years, 167.7 (11.5) cm, 58.6 (12.2) kg).</p><p><strong>Methods: </strong>The FFT group completed three weekly 40-min FFT sessions with modified, motivating, involving, high-intensity sports-based activities. 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引用次数: 0
摘要
目的：评价为期10周、每周三次的FIT FIRST Teen （FFT）干预对丹麦12-15岁青少年心肺健康的影响。设计：集群随机对照研究。参与者：来自15所市办学校的1417名丹麦学生（51.1%），被分配到干预组(FFT: n = 994, 13.5（0.6）岁（mean (SD)）， 165.8 （8.7) cm, 57.8 (13.4) kg）或常规对照组(CON: n = 423, 13.8（0.8）岁，167.7 （11.5)cm, 58.6 (12.2) kg）。方法：FFT组每周完成三次40分钟的FFT会话，其中包括改良的、激励的、涉及的、高强度的运动。测量干预前后10周静息心率、血压、体成分、体位平衡、立定跳远及儿童溜溜球间歇恢复1级测试（YYIR1C）成绩。所有结果变量的组效应均采用多级线性混合模型进行检验。结果：组效应分析显示，FFT和CON在YYIR1C检测中无显著差异（p = 0.080）。各组间静息心率有显著的小差异（d = 0.29, p = 0.039），有利于FFT。各组之间在身体组成、其余心血管和体能变量方面均无显著差异（p < 0.05）。结论：大多数结果测量缺乏显著效果，需要进一步开发和长期测试该方案。
FIT FIRST teen - a cluster RCT evaluating the effects of a 10-week high-intensity exercise intervention for 12-15-yr-old school children.
Objectives: To evaluate the effects of a 10-week thrice-weekly FIT FIRST Teen (FFT) intervention on cardiorespiratory fitness in Danish 12-15-years-olds.
Design: A cluster-randomised controlled study.
Participants: One thousand four hundred and seventeen Danish pupils (51.1% female) from 15 municipal schools, allocated to an intervention group (FFT: n = 994, 13.5 (0.6) years (mean (SD)), 165.8 (8.7) cm, 57.8 (13.4) kg) or a usual practice control group (CON: n = 423, 13.8 (0.8) years, 167.7 (11.5) cm, 58.6 (12.2) kg).
Methods: The FFT group completed three weekly 40-min FFT sessions with modified, motivating, involving, high-intensity sports-based activities. Before and after the 10-wk intervention period resting heart rate and blood pressure, body composition, postural balance, standing long jump and performance on the Yo-Yo intermittent recovery level 1 children's test (YYIR1C) were measured. Group effects for all outcome variables were tested using multi-level linear mixed models.
Results: The group effect analyses showed no significant differences between FFT and CON in the YYIR1C test (p = 0.080). A significant small difference between groups was found in resting heart rate (d = 0.29, p = 0.039) in favour of FFT. No significant between-group differences were observed in body composition, or the remaining cardiovascular or physical fitness variables (p >0.05).
Conclusion: The lack of significant effects for the majority of the outcome measures calls for further development and long-term testing of the programme.
期刊介绍：
The Journal of Sports Sciences has an international reputation for publishing articles of a high standard and is both Medline and Clarivate Analytics-listed. It publishes research on various aspects of the sports and exercise sciences, including anatomy, biochemistry, biomechanics, performance analysis, physiology, psychology, sports medicine and health, as well as coaching and talent identification, kinanthropometry and other interdisciplinary perspectives.
The emphasis of the Journal is on the human sciences, broadly defined and applied to sport and exercise. Besides experimental work in human responses to exercise, the subjects covered will include human responses to technologies such as the design of sports equipment and playing facilities, research in training, selection, performance prediction or modification, and stress reduction or manifestation. Manuscripts considered for publication include those dealing with original investigations of exercise, validation of technological innovations in sport or comprehensive reviews of topics relevant to the scientific study of sport.
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