Maintaining Physical Activity in Ethnic Minority Women

不活动会直接导致健康疾病，包括乳腺癌和结肠癌，并间接导致许多其他癌症，部分原因是造成肥胖。少数民族报告说，缺乏体育活动和肥胖的比例较高。以个人为重点的身体活动（PA）干预措施最初是有效的。 高达50%的人在6个月内退出，此后维护率继续下降。生态模型表明，不支持PA的环境会阻碍PA的维持。很少有调查测试的支持性环境与个别集中的干预措施，增加PA的综合影响。拟议研究的目的是（1）确定24周的社会凝聚力干预（SOCO）是否比延迟控制（CONT）更有效地采用步行进行休闲锻炼和交通，（2）确定居住在高支持PA区域（HIGH）的参与者与居住在低支持PA区域（LOW）的参与者相比是否更有效地维持行走，以及（3）确定这种效应是否在两个城市的两个文化群体中具有跨文化复制性。休斯顿的非裔美国妇女和奥斯汀的西班牙裔妇女将从教堂和社区中心招募，并随机分配到SOCO或CONT。参与者的社区将被分类为高或低支持。参与者将在基线（T1）、干预后（T2）和6个月随访（T3）时完成书面社会人口统计学、步行（国际体力活动问卷）和健康测量。参与者将完成加速计评估，作为有效性检查。假设（1）SOCO参与者在T2时的步行时间比CONT多，（2）居住在HIGH社区的SOCO参与者在T3时的步行时间比LOW多，（3）这种效应将是跨文化复制的。如果支持，假设将表明，SOCO战略的持续影响是由环境支持主持。

inactivity contributes to health maladies including breast and colon cancers directly, and numerous other cancers indirectly, in part by contributing to obesity. Ethnic minorities report higher rates of physical inactivity and obesity. Individually-focused physical activity (PA) interventions are initially effective. Up to 50% drop out within 6 months, and maintenance continues to decline after this time. Ecological models posit that environments do not support PA impede PA maintenance. There have been few investigations testing the combined effects of supportive environments with individually focused interventions that increase PA. The purpose of the proposed study is (1) to determine whether a 24 week social cohesion intervention (SOCO) is more effective for adopting walking for leisure exercise and transport in comparison to a delayed control (CONT), (2) to determine whether walking is more effectively maintained by participants who reside in highly supportive PA areas (HIGH) in comparison to those who reside in low supportive PA areas (LOW), and (3) to determine whether this effect is transculturally replicable across 2 cultural groups from 2 cities. African American women in Houston and Hispanic women in Austin will be recruited from churches and community centers and randomized to either SOCO or CONT. Participants' neighborhoods will be classified as HIGH or LOW supportive. Participants will complete written socio demographic, walking (International Physical Activity Questionnaire), and health measures at baseline (T1), post intervention (T2), and 6 month follow-up (T3). Participants will complete accelerometer assessments as a validity check. It is hypothesized that (1) participants in SOCO will report more walking at T2 than CONT, (2) SOCO participants residing in HIGH neighborhoods will report greater minutes of walking than LOW at T3, and (3) this effect will be transculturally replicable. If supported, hypotheses will suggest that the sustained effect of SOCO strategies is moderated by environmental supports.