Joensuu Laura, Tammelin Tuija H, Syväoja Heidi J, Barker Alan R, Parkkari Jari, Kujala Urho M
Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
Likes, JAMK University of Applied Sciences, Jyväskylä, Finland.
BMJ Open Sport Exerc Med. 2024 Mar 29;10(1):e001642. doi: 10.1136/bmjsem-2023-001642. eCollection 2024.
To evaluate the independent associations of physical activity and physical fitness with self-rated health in adolescents.
Data from a 2-year observational study (2013-2015) were used (n=256, 58% girls, 13.7±0.3 years at baseline). Self-rated health was assessed with a questionnaire, physical activity by an accelerometer and a questionnaire, and physical fitness via the measurements included in the Finnish national Move! monitoring system for physical functional capacity and their z-score average (fitness index).
Self-reported physical activity had cross-sectional associations with self-rated health (girls β 0.213, p=0.006, β 0.221 boys p=0.021) while accelerometer-based moderate-to-vigorous physical activity did not. Higher self-reported physical activity at baseline was associated with higher self-rated health at follow-up in boys (β 0.289, p<0.001), but not in girls (β -0.056, p=0.430). Accelerometer-based moderate-to-vigorous physical activity had positive longitudinal associations with future self-rated health in boys, but some of these similar associations were negative in girls. Fitness index had a positive cross-sectional association with self-rated health in boys (β 0.282 or β 0.283, p=0.002), but not in girls (β 0.162 or β 0.161, p=0.051). Physical fitness was not longitudinally associated with self-rated health.
Self-reported physical activity showed potential to explain current and future self-rated health better than accelerometer-based physical activity or physical fitness. We recommended to consider self-reported physical activity as an adequate metric of adolescent health in the population-level surveillance systems.
评估青少年身体活动和体能与自评健康之间的独立关联。
使用了一项为期2年的观察性研究（2013 - 2015年）的数据（n = 256，58%为女孩，基线时年龄为13.7±0.3岁）。通过问卷评估自评健康，通过加速度计和问卷评估身体活动，并通过芬兰国家“动起来！”身体功能能力监测系统中的测量指标及其z分数平均值（体能指数）评估体能。
自我报告的身体活动与自评健康存在横断面关联（女孩β为0.213，p = 0.006；男孩β为0.221，p = 0.021），而基于加速度计的中度至剧烈身体活动则不然。基线时自我报告的身体活动较高与男孩随访时较高的自评健康相关（β为0.289，p < 0.001），但与女孩无关（β为 - 0.056，p = 0.430）。基于加速度计的中度至剧烈身体活动与男孩未来的自评健康呈正纵向关联，但其中一些类似关联在女孩中为负。体能指数与男孩的自评健康存在正横断面关联（β为0.282或β为0.283，p = 0.002），但与女孩无关（β为0.162或β为0.161，p = 0.051）。体能与自评健康无纵向关联。
自我报告的身体活动比基于加速度计的身体活动或体能更有潜力解释当前和未来的自评健康。我们建议在人群水平监测系统中，将自我报告的身体活动视为青少年健康的适当指标。
