Self-efficacy partially mediates the effect of a school-based physical-activity intervention among adolescent girls
Self-efficacy partially mediates the effect of a school-based physical-activity intervention among adolescent girls
复制标题
DOI：
10.1016/j.ypmed.2003.12.007
复制
发表时间：
2004-05-01
影响因子：
5.1
通讯作者：
Pate, RR
中科院分区：
文献类型：
--
作者：
Dishman, RK;Motl, RW;Pate, RR
背景本研究评估了生活方式教育活动计划（LEAP），一个全面的学校为基础的干预措施，强调教学和学校环境的变化，对变量来自社会认知理论（SCT）的介质中的黑人和白色青春期女孩的身体活动的变化。根据招生规模、种族构成、城市、郊区或农村位置以及班级结构配对的24所高中被随机分为对照组（n = 12）和实验组（n = 12）。对照组女生1038人，实验组女生1049人。多元干预强调通过体育课和健康教育指导中的课程活动来提高自我效能和发展行为技能。主要结果为自我效能、结果期望值、目标设定、满意度和体力活动。潜变量结构方程模型表明：（1）自我效能感和满意度与体力活动存在同步的、横断面的关系;（2）干预对自我效能感、目标设定和体力活动有直接影响;（3）自我效能感部分中介了干预对体力活动的影响。据我们所知，这项研究提供了来自随机对照试验的第一个证据，即自我效能的操纵导致黑人和白色青春期女孩身体活动的增加。结果鼓励使用自我效能作为一个有针对性的，中介变量的干预措施，旨在增加女孩的身体活动。(C)2004年癌症预防研究所和爱思唯尔公司。All rights reserved.
Background. This study evaluated the effects of the Lifestyle Education for Activity Program (LEAP), a comprehensive school-based intervention emphasizing changes in instruction and school environment, on variables derived from social-cognitive theory (SCT) as mediators of change in physical activity among black and white adolescent girls.Methods. Twenty-four high schools paired on enrollment size, racial composition, urban, suburban, or rural location, and class structure were randomized into control (n = 12) or experimental (n = 12) groups. There were 1038 girls in the control group and 1049 girls in the experimental group. The multicomponent intervention emphasized the enhancement of self-efficacy and development of behavioral skills by using curricular activities within physical education classes and health education instruction. The primary outcomes were self-efficacy, outcome-expectancy value, goal setting, satisfaction, and physical activity.Results. Latent variable structural equation modeling indicated that: (1) self-efficacy and satisfaction exhibited synchronous, cross-sectional relationships with physical activity; (2) the intervention had direct effects on self-efficacy, goal setting, and physical activity; and (3) self-efficacy partially mediated the effect of intervention on physical activity.Conclusions. To our knowledge, this study provides the first evidence from a randomized controlled trial that manipulation of self-efficacy results in increased physical activity among black and white adolescent girls. The results encourage the use of self-efficacy as a targeted, mediator variable in interventions designed to increase physical activity among girls. (C) 2004 The Institute For Cancer Prevention and Elsevier Inc. All rights reserved.