Christina Birch Meiner, Caroline Eckert, Charlotte Sandager Aggestrup, Kristina Pfeffer, Sofie Koch, Cecilie Thøgersen-Ntoumani, Nikos Ntoumanis, Peter Krustrup, Malte Nejst Larsen
{"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. 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":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sports Sciences","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1080/02640414.2025.2505380","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/5/16 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"SPORT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
