Faculty of Health Promotion, Sport Sciences and Leisure Studies, School of Education, University of Iceland, 105 Reykjavík, Iceland.
Department of Sport and Physical Activity, Western Norway University of Applied Sciences, 5063 Bergen, Norway.
Int J Environ Res Public Health. 2021 Mar 18;18(6):3162. doi: 10.3390/ijerph18063162.
This study aimed to examine the association of different frequencies of organized sport participation (OSP) with physical activity, cardiorespiratory fitness, body composition, sleep, and screen time among adolescents. A cross-sectional study involving 315 16-year-old adolescents was conducted. OSP was self-reported, being categorized as 0 times a week, less than three times a week, 4-5 times a week, and 6-7 times a week, on average. Screen time was also self-reported but physical activity and sleep duration were objectively measured. Cardiorespiratory fitness and body composition were measured using a maximal cycle ergometer test and a dual-energy X-ray absorptiometry (DXA) scan, respectively. An analysis of covariance revealed a significant association between OSP and physical activity (F (3, 286) = 14.53, < 0.01), cardiorespiratory fitness (F (3, 236) = 17.64, < 0.01), screen time (F (3, 294) = 8.14, < 0.01), body fat percentage (F (3, 292) = 11.84, < 0.01), and fat free mass (F (3, 290) = 5.76, < 0.01. No significant association was found between OSP and sleep duration. Post hoc analyses showed that OSP at least four times a week was beneficial to favorable physical activity levels, cardiorespiratory fitness, screen time, and body composition and may therefore serve as a valuable tool in battling unhealthy lifestyle behaviors among adolescents.
本研究旨在探讨不同频率的有组织体育参与（OSP）与青少年体力活动、心肺适能、身体成分、睡眠和屏幕时间之间的关系。本研究采用横断面研究设计，共纳入 315 名 16 岁青少年。OSP 由自我报告，分为每周 0 次、每周少于 3 次、每周 4-5 次和每周 6-7 次。屏幕时间也由自我报告，但体力活动和睡眠时间由客观测量。心肺适能和身体成分分别使用最大循环测功仪测试和双能 X 线吸收法（DXA）扫描进行测量。协方差分析显示，OSP 与体力活动（F（3, 286）=14.53，<0.01）、心肺适能（F（3, 236）=17.64，<0.01）、屏幕时间（F（3, 294）=8.14，<0.01）、体脂百分比（F（3, 292）=11.84，<0.01）和去脂体重（F（3, 290）=5.76，<0.01）呈显著相关。但 OSP 与睡眠时间无显著相关性。事后分析显示，每周至少进行 4 次 OSP 有利于提高体力活动水平、心肺适能、减少屏幕时间和改善身体成分，因此可能是对抗青少年不健康生活方式行为的有效工具。
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