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

项目摘要/摘要 这项提议的总体目标是扩展对正在进行的人际机制的评估 以小组为基础的体力活动(PA)对不活跃的非裔美国女性的干预， 实现更多的体力活动“试验(Team-PA；R01HL160618)。借鉴社会认知理论，自我 决定论、群体动力学理论和以非洲为中心的世界观研究--Team-PA试验 以四个基于群体的人际因素为目标，这些因素被假设为 促进每天体育锻炼的总分钟数：集体效能、群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对母公司R01进行扩展 使用经验抽样方法，人际因素促进了体力活动随时间的变化。过去时 努力了解非裔美国女性体力活动改变的人际机制 由于主要使用人与人之间的方法来评估调解人(例如，横断面 调查)，这些调查没有完全反映非裔美国女性的生活经历和随时间的波动 和背景。此外，广泛的研究证明了支持体力活动的重要性。 在非裔美国女性的家庭和朋友中，但这样的研究很少采用生态学 评估跨多个系统的体力活动支持的同时影响的框架(例如， 基于团体的计划、家庭、朋友、社区)，或对体育活动的支持波动的程度 跨越时间和背景。因此，拟议的补编研究试图通过增加 在为期10周的治疗期内体验三种为期7天的抽样方法，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)如何 网络)随时间和环境波动，影响日常体力活动。通过面对面评估 随着时间和环境的变化，并采用系统级的重点，我们建议这种方法将更好 捕捉非裔美国女性的生活经历，并为何时和 为什么人际因素会促进非裔美国女性更多的体力活动。具体目标 建议的补充研究是：检验日常波动是否以群体为基础的人际因素 (集体效能、关联性、群体凝聚力、相互支持)每天总分钟数的影响增加 随着时间推移的体力活动[目标1]；评估以群体为基础的人际因素和 来自更广泛的支持网络的支持的波动独立地影响整个 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， 实际接近)充当调解人，并帮助解释何时从更广泛的支持中获得支持的波动 网络对PA每天的总分钟数影响最大[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].