Department of Psychology, University of South Carolina, Columbia, SC, USA.
College of Nursing, University of South Carolina, Columbia, SC, USA.
J Sports Sci. 2023 Mar;41(6):502-511. doi: 10.1080/02640414.2023.2225020. Epub 2023 Jun 15.
The purpose of this study was to investigate the influences of intrinsic motivation, social affiliation orientations and reciprocal social support for physical activity (PA) on underserved youths' afterschool period moderate-to-vigorous (MVPA) changing trajectories across the 16-week Connect through PLAY intervention, a social-motivational climate intervention. A total of 113 youth (61.06% African American, 56.64% girls) provided full data. Youths' intrinsic motivation, social affiliation orientations and social support were measured by youth responses to a set of surveys at baseline and post-intervention. Youths' afterschool period MVPA was measured using data from 7-day ActiGraph accelerometer wear at baseline, midpoint and post-intervention. Hierarchical linear modelling analysis found that youth daily afterschool period (3pm-6pm) MVPA increased, on average, 37.94 min across the 16-week intervention. Increases in intrinsic motivation, social affiliation orientations and social support were positive predictors of youth afterschool MVPA changing trajectory. The findings clarify the contributions that a social-motivational climate intervention can have on youth afterschool period MVPA through increasing youth intrinsic motivation, social affiliation and reciprocal social support.
本研究旨在探讨内在动机、社会联系取向和互惠社会支持对体育活动（PA）的影响，这些影响作用于服务不足的青少年在“通过 PLAY 进行联系”（Connect through PLAY）干预计划的 16 周后，对其课外时间中到剧烈运动（MVPA）变化轨迹的影响。这是一项社会动机氛围干预计划。共有 113 名青少年（61.06%为非裔美国人，56.64%为女孩）提供了完整的数据。青少年的内在动机、社会联系取向和社会支持是通过青少年在基线和干预后对一系列调查的回答来衡量的。青少年课外时间的 MVPA 是通过在基线、中点和干预后使用 7 天 ActiGraph 加速度计佩戴数据来衡量的。分层线性模型分析发现，青少年课外时间（下午 3 点至 6 点）的 MVPA 平均增加了 37.94 分钟，贯穿整个 16 周的干预。内在动机、社会联系取向和社会支持的增加是青少年课外 MVPA 变化轨迹的积极预测因素。这些发现阐明了社会动机氛围干预计划可以通过增加青少年内在动机、社会联系和互惠社会支持，对青少年课外时间的 MVPA 产生影响。
