Department of Food and Nutrition, and Sport Science, University of Gothenburg, 41120 Gothenburg, Sweden.
School of Health and Welfare, Halmstad University, 30118 Halmstad, Sweden.
Int J Environ Res Public Health. 2018 Nov 13;15(11):2542. doi: 10.3390/ijerph15112542.
Physical activity (PA) decreases with age, and interventions are needed to promote PA during adolescence, especially, among those in low-socioeconomic status (SES) areas. The aim of this study was to investigate whether a two-year, empowerment-based health-promotion school intervention had any effects on changes in (a) moderate-to-vigorous PA (MVPA), (b) sedentary time (SED), (c) exercise training (ET) frequency, and (d) ET duration, among adolescents. Participants (aged 12⁻13 years at baseline) from one intervention school and two control schools, were recruited from a multicultural area of Sweden, characterized by low-SES. During the course of the two-year intervention, a total of 135 participants (43% boys) were included in the study. The intervention was developed and implemented as a result of cooperation and shared decision-making among the researchers and the participants. MVPA and SED were measured with accelerometers, and ET frequency and duration was self-reported at the beginning of the seventh, eighth, and ninth grade, respectively. There were no significant effects of the two-year, empowerment-based health-promotion school intervention on changes in the accelerometer-measured MVPA and SED, or the self-reported ET frequency and duration, among the adolescents. Overall, the intervention was unsuccessful at promoting PA and reducing SED. Several possible explanations for the intervention's lack of effects are discussed.
身体活动（PA）随年龄增长而减少，因此需要干预措施来促进青少年，尤其是那些社会经济地位较低地区的青少年进行身体活动。本研究旨在调查为期两年的以赋权为基础的健康促进学校干预措施是否对以下方面的变化有任何影响：（a）中等到剧烈身体活动（MVPA），（b）久坐时间（SED），（c）运动训练（ET）频率，以及（d）ET 持续时间，在青少年中。参与者（基线时年龄为 12⁻13 岁）来自瑞典一个多元文化地区，社会经济地位较低。在为期两年的干预过程中，共有 135 名参与者（43%为男孩）参与了研究。该干预措施是由研究人员和参与者共同合作和共同决策制定和实施的。MVPA 和 SED 通过加速度计测量，而 ET 频率和持续时间则分别在七年级、八年级和九年级开始时自我报告。为期两年的以赋权为基础的健康促进学校干预措施对青少年的加速度计测量的 MVPA 和 SED 变化，以及自我报告的 ET 频率和持续时间没有显著影响。总体而言，该干预措施未能促进 PA 并减少 SED。讨论了干预措施缺乏效果的几种可能解释。
