Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI, United States of America.
Department of Health Behavior, School of Public Health at University of Alabama at Birmingham, Birmingham, AL, United States of America.
Contemp Clin Trials. 2020 Sep;96:106081. doi: 10.1016/j.cct.2020.106081. Epub 2020 Jul 17.
Latina women report disproportionately high rates of physical inactivity and related chronic health conditions. Physical activity (PA) efforts to date have shown modest success in this at-risk population; thus, more effective interventions are necessary to help Latinas reach national PA guidelines and reduce related health disparities. This paper describes the design, rationale, and baseline findings from the Seamos Activas II intervention.
METHODS/DESIGN: The ongoing RCT will test the efficacy of the Seamos Saludables PA print intervention vs. a theory-and technology-enhanced version (Seamos Activas II). The purpose of the study is to increase the percentage of Latinas meeting the national PA guidelines compared to the prior trial, improve biomarkers related to disease, and extend generalizability to a broader and more representative population of Latinas (i.e. Mexican/Mexican-Americans). Intervention refinements included further targeting key constructs of Social Cognitive Theory, and incorporating interactive text message-based self-monitoring strategies. The primary outcome is change in minutes per week of MVPA measured by ActiGraph GT3X+ accelerometers at 6- and 12-months. Secondary PA outcomes assessed by the 7-Day PA Recall will be used to corroborate findings.
Participants (N = 199) are Latinas 18-65 years (mean = 43.8) of predominantly Mexican origin (89%). At baseline, objectively measured MVPA was 39.51 min/week (SD = 71.20, median = 10) and self-reported MVPA was 12.47 min/week (SD = 22.54, median = 0).Participants reported generally low self-efficacy and higher cognitive vs. behavioral processes of change.
Addressing interactivity and accountability through text messaging, and more rigorously targeting theoretical constructs may be key to helping Latinas achieve nationally recommended PA levels and thereby reducing health disparities.
拉美人报告身体活动不足和相关慢性健康状况的比例过高。迄今为止，针对这一高危人群的身体活动（PA）工作取得了适度的成功；因此，需要更有效的干预措施来帮助拉丁裔人达到国家 PA 指南并减少相关的健康差距。本文介绍了 Seamos Activas II 干预措施的设计、原理和基线结果。
方法/设计：正在进行的 RCT 将测试 Seamos Saludables PA 印刷干预措施与经过理论和技术增强的版本（Seamos Activas II）的效果。研究的目的是与前一项试验相比，增加达到国家 PA 指南的拉丁裔人的百分比，改善与疾病相关的生物标志物，并将普遍性扩展到更广泛和更具代表性的拉丁裔人群（即墨西哥/墨西哥裔美国人）。干预措施的改进包括进一步针对社会认知理论的关键结构，并纳入基于交互式短信的自我监测策略。主要结果是通过 ActiGraph GT3X+加速度计在 6 个月和 12 个月时测量的 MVPA 每周分钟数的变化。将使用 7 天 PA 回忆来评估次要 PA 结果。
参与者（N=199）是 18-65 岁（平均=43.8）的拉丁裔女性，主要来自墨西哥（89%）。在基线时，客观测量的 MVPA 为 39.51 分钟/周（SD=71.20，中位数=10），自我报告的 MVPA 为 12.47 分钟/周（SD=22.54，中位数=0）。参与者报告的自我效能感普遍较低，认知过程比行为过程更改变。
通过短信消息传递提高交互性和问责制，并更严格地针对理论结构，可能是帮助拉丁裔人达到国家推荐的 PA 水平从而减少健康差距的关键。
