High levels of stress and inactivity likely contribute to chronic disease disparities among Latinas in the U.S. and call for intervention. To inform such efforts, the current study examined the relationships among changes (over time) in physical activity, stress, and related cardiometabolic biomarkers among sedentary (mostly) first generation Latinas. Data are taken from a randomized controlled trial (N = 199 Latinas) of two home-based physical activity interventions (Original vs. theory- and technology- Enhanced versions). Physical activity and perceived stress were assessed at baseline and 6 and 12 months. Blood draws occurred at baseline and 6 months in a random subsample (N = 153). The participants were underactive (<60/min week of moderate-to-vigorous physical activity) Mexican American (89%) women with moderate perceived stress scores (M = 21.49, SD = 8.55, range = 0–40) and excess weight (M BMI = 30.6) at baseline. Overall, participants reported decreases in stress after 6 months enroled in the physical activity programs. The odds of a reduction in perceived stress were 11% higher among Enhanced versus Original Intervention participants (OR = 1.11, 95% CI: 1.05–2.27). Those who met physical activity guidelines were significantly more likely to report reductions in perceived stress over 6 months (OR = 1.92, 95% CI: 1.08–4.16). Furthermore, those who reported reductions in perceived stress over 6 months reported significantly more moderate-to-vigorous physical activity at 12 months (+69 min/week, SE = 27.98, p = 0.01) compared to those who did not. Greater reductions in perceived stress over 6 months were associated with greater improvements in cardiometabolic biomarkers (HbA1c, triglycerides, p's < 0.05). These results support a bidirectional relationship between improvements in stress and physical activity among Latinas. Future implications include using physical activity to address stress management and health disparities in this community.

中文翻译：

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参加一项技术支持的身体活动干预随机对照试验的拉丁裔美国人的压力得到改善

高度的压力和缺乏活动可能会导致美国拉丁裔之间的慢性疾病差异，并需要干预。为了为这些努力提供信息，当前的研究调查了久坐的（主要是）第一代拉丁裔人的体力活动、压力和相关心脏代谢生物标志物的变化（随着时间的推移）之间的关系。数据取自 两项家庭体育活动干预措施（原始版本与理论和技术增强版本）的随机对照试验（ N = 199 名拉丁裔）。在基线以及 6 个月和 12 个月时评估体力活动和感知压力。随机子样本 ( N  = 153) 在基线和 6 个月时进行抽血。参与者是活动不足（每周中度至剧烈体力活动 <60 次/分钟）的墨西哥裔美国女性 (89%)，感知压力评分中等（M  = 21.49，SD = 8.55，范围 = 0–40）且体重超标（基线时 M BMI = 30.6）。总体而言，参加体育活动计划 6 个月后，参与者报告压力有所减轻。与原始干预参与者相比，增强干预参与者感知压力减少的几率高出 11%（OR = 1.11，95% CI：1.05–2.27）。那些符合体力活动指南的人更有可能在 6 个月内报告感知压力减少（OR = 1.92，95% CI：1.08–4.16）。此外，那些报告在 6 个月内感知压力减少的人与那些没有报告的人相比，在 12 个月时报告了明显更多的中度至剧烈体力活动（+69 分钟/周，SE = 27.98，p  = 0.01）。 6 个月内感知压力的更大程度减少与心脏代谢生物标志物（HbA1c、甘油三酯， p < 0.05）的更大改善相关。这些结果支持拉丁裔压力改善和身体活动之间存在双向关系。未来的影响包括利用体育活动来解决该社区的压力管理和健康差异。