The Together Everyone Achieves More Physical Activity Trial (TEAM-PA)

项目总结/摘要 这项建议的总目标是扩大对人际机制的评价， 基于团体的身体活动（PA）干预不活跃的非洲裔美国妇女，“大家一起来， 实现更多体力活动”试验（TEAM-PA; R 01 HL 160618）。根据社会认知理论，自 决定理论，群体动力学理论，以及对非洲中心世界观的研究，TEAM-PA试验 目标是四个基于群体的人际因素，这被假设为关键的人际机制， 促进每天的身体活动总分钟数：集体效能，团体凝聚力和相互支持。 拟议的补充研究旨在通过更深入地评估如何在母R 01基础上进行扩展 使用经验抽样方法，人际因素促进身体活动随时间的变化。过去 努力了解非裔美国妇女身体活动变化的人际机制 由于主要使用人与人之间的方法来评估调解人而受到限制（例如，横截面 调查），这并没有充分捕捉非洲裔美国妇女的生活经历和波动随着时间的推移 和上下文。此外，广泛的研究表明，支持体育活动的重要性 在非洲裔美国妇女的家庭和朋友中，但这种研究很少采用生态学的方法。 评估支持多个系统的身体活动的同时影响的框架（例如， 基于团体的计划，家庭，朋友，社区），或对体育活动的支持程度波动 跨越时间和背景。因此，拟议的补充研究旨在通过增加 在10周的治疗期内，采用三种为期7天的经验采样方法，以更好地了解 人际因素（包括基于小组的干预和参与者更广泛的支持） 网络）在时间和环境中波动，从而影响日常身体活动。通过评估个人内部 随着时间和背景的变化并采用系统级焦点，我们建议这种方法会更好 捕捉非洲裔美国妇女的生活经验，并提供更全面的支持， 为什么人际关系因素促进非洲裔美国妇女更多的体育活动。具体目标 的建议补充研究是：以测试是否波动的日常群体为基础的人际因素 （集体效能，相关性，群体凝聚力，相互支持）的影响增加，每天总分钟的 随着时间的推移，体力活动[目的1];评估是否波动的群体为基础的人际因素， 来自更广泛的支持网络的支持波动独立地影响日常PA的增加， 时间[目标2];以及确定支持的上下文方面（例如，网络来源，支持类型， 物理接近）作为调节器，并有助于解释当一个人的更广泛的支持波动时， 网络对不同时间PA的每日总分钟数影响最大[目标3]。

Project Summary/Abstract The overall goal of this proposal is to expand upon the evaluation of interpersonal mechanisms in an ongoing group-based physical activity (PA) intervention for inactive African American women, the “Together Everyone Achieves More Physical Activity” trial (TEAM-PA; R01HL160618). Drawing from Social Cognitive Theory, Self- Determination Theory, Group Dynamics Theory, and research on an Afro-Centric Worldview, the TEAM-PA trial targets four group-based interpersonal factors, which are hypothesized to be key interpersonal mechanisms for promoting total minutes of physical activity per day: collective efficacy, group cohesion, and reciprocal support. The proposed supplement study aims to expand upon the parent R01 by evaluating in greater depth how interpersonal factors facilitate changes in physical activity across time using experience sampling methods. Past efforts to understand interpersonal mechanisms of change for physical activity among African American women have been limited by primarily using between-person approaches for assessing mediators (e.g., cross-sectional surveys), which do not fully capture African American women’s lived experiences and fluctuations across time and contexts. Furthermore, extensive research has demonstrated the importance of support for physical activity among family and friends among African American women, but such studies rarely adopt an ecological framework to evaluate the simultaneous impact of support for physical activity across multiple systems (e.g., group-based programs, family, friends, community), or the extent to which support for physical activity fluctuates across time and contexts. Thus, the proposed supplement study seeks to address these limitations by adding three 7-day waves of experience sampling methods across the 10-week treatment period to better understand how interpersonal factors (both within the group-based intervention and across participants’ broader support networks) fluctuate across time and contexts to impact daily physical activity. By evaluating within-person changes over time and contexts and adopting a systems-level focus, we propose that this approach will better capture African American women’s lived experiences and provide more comprehensive support for when and why interpersonal factors promote greater physical activity among African American women. The specific aims of the proposed supplement study are: to test whether fluctuations in the daily group-based interpersonal factors (collective efficacy, relatedness, group cohesion, reciprocal support) impact increases in daily total minutes of physical activity over time [Aim 1]; to evaluate whether fluctuations in the group-based interpersonal factors and fluctuations in support from one’s broader support network independently impact increases in daily PA across time [Aim 2]; and to determine whether contextual aspects of support (e.g., network source, type of support, physical proximity) act as moderators and help to explain when fluctuations in support from one’s broader support network are most impactful on daily total minutes of PA across time [Aim 3].