The Moderating Effects of Social Support and Stress on Physical Activity in African American Women
The Moderating Effects of Social Support and Stress on Physical Activity in African American Women
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DOI：
10.1093/abm/kaaa051
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发表时间：
2021-04-01
影响因子：
3.8
通讯作者：
Van Horn, M. Lee
中科院分区：
文献类型：
--
作者：
Brown, Asia;Wilson, Dawn K.;Van Horn, M. Lee
背景：与其他种族和性别的人口统计群体相比，非裔美国妇女参加较少的体育活动（PA），有较高的慢性病发病率，并报告较高的感知压力。目的在压力缓冲假说的基础上，检验社会支持在高而非低感知压力条件下，对中高强度志愿服务人员（MVPA）的负面效应有缓冲作用。方法143名非裔美国妇女（平均[M]年龄= 43.94，标准差[SD] = 8.62； M体重指数= 37.94,SD = 8.11）参加家庭共同改善（FIT）减肥试验。通过基线、8周和16周的7天加速度计估计获得MVPA的平均日分钟数。结果一个多水平增长模型显示压力、社会支持和时间之间存在显著的三向交互作用（B = -0.31，标准误差[SE] = 0.14, p = .03）。简单斜率分析显示，在基线时，在高社会支持（+1 SD）的被试中，压力与更高的MVPA呈正相关（B = 0.49, SE = 0.18, p = 0.008），而在低社会支持（-1 SD）的被试中，压力与MVPA无显著相关（B = -0.04, SE = 0.14, p = 0.81）。然而，在8周和16周时，无论是高支持组还是低支持组，压力与MVPA都没有显著相关。研究结果强调了将压力和社会支持结构整合到未来非裔美国妇女体育活动干预计划中的重要性，以及纵向评估压力和社会支持变化的必要性。
Background African American women participate in less physical activity (PA), have higher rates of chronic disease, and report higher perceived stress relative to other race and sex demographic groups.Purpose Based on the stress-buffering hypothesis, this study tested the hypothesis that social support would buffer the negative effects of perceived stress on moderate-to-vigorous PA (MVPA) under high, but not low, perceived stress.Methods Participants were 143 African American women (mean [M] age = 43.94, standard deviation [SD] = 8.62; M body mass index = 37.94, SD = 8.11) enrolled in the Families Improving Together (FIT) for Weight Loss Trial. Average daily minutes of MVPA were obtained via 7 day accelerometer estimates at baseline and 8 and 16 weeks.Results A multilevel growth model demonstrated a significant three-way interaction between stress, social support, and time (B = -0.31, standard error [SE] = 0.14, p = .03). Simple slopes analyses revealed that, at baseline, among participants with high social support (+1 SD), stress was positively associated with greater MVPA (B = 0.49, SE = 0.18, p = .008), whereas among participants with low social support (-1 SD), stress was not significantly associated with MVPA (B = -0.04, SE = 0.14, p = .81). However, at 8 and 16 weeks, stress was not significantly associated with MVPA for either high or low support groups.Conclusions Findings highlight the importance of integrating constructs of stress and social support into future physical activity intervention programs for African American women and the need to evaluate changes in stress and social support longitudinally.