Department of Exercise Science, University of South Carolina, Columbia, SC 29208, USA.
Health Educ Res. 2010 Aug;25(4):645-55. doi: 10.1093/her/cyq007. Epub 2010 Feb 10.
Mediation analyses in faith-based physical activity (PA) interventions targeting African-American adults are lacking. The purpose of this study was to examine the psychosocial mediators of a faith-based PA intervention with African-American adults. Churches were randomly assigned to receive immediate or delayed (1-year later) training in PA program implementation. A subsample of participants from randomly selected churches took part in telephone surveys at baseline and at 1 year. The primary outcome was percentage of participants meeting PA recommendations. MacKinnon's product of coefficients was used to test for mediation. Participants (n = 418) from 20 churches completed the baseline and 1-year follow-up surveys. There were no statistically significant changes in PA behavior at 1 year. The intervention had a marginally significant effect on increasing the amount of instrumental church support received by church members. However, none of the psychosocial variables tested were found to be significant mediators of the intervention. Mediation analyses provided insight into potential reasons as to why the Health-e-AME intervention did not change PA. The intervention did not successfully change the targeted mediators hypothesized to change PA. Potential reasons for these shortcomings as well as issues to address in future faith-based studies are discussed.
针对非裔美国成年人的基于信仰的身体活动（PA）干预措施中缺乏调解分析。本研究的目的是检验针对非裔美国成年人的基于信仰的 PA 干预措施的心理社会中介。随机分配教堂接受 PA 计划实施的即时或延迟（1 年后）培训。随机选择的教堂的参与者样本参加了基线和 1 年时的电话调查。主要结果是符合 PA 建议的参与者比例。使用系数乘积的 MacKinnon 检验进行调解。来自 20 个教堂的 418 名参与者完成了基线和 1 年的随访调查。在 1 年内，PA 行为没有统计学上的显著变化。该干预措施对增加教会成员获得的工具性教会支持的数量具有边缘显著的影响。然而，测试的心理社会变量中没有一个被发现是干预的显著中介。调解分析深入了解了为什么 Health-e-AME 干预措施没有改变 PA 的潜在原因。该干预措施并未成功改变假设可以改变 PA 的目标中介。讨论了这些缺点的潜在原因以及未来基于信仰的研究中需要解决的问题。
