ELDER PARTICIPATION IN PHYSICAL ACTIVITY

描述（改编自研究者摘要）： 有证据表明，久坐的生活方式与增加 患病风险和功能降低。虽然已经 确定了从适度的水平可以获得显着的健康益处 在所有年龄段的定期体育活动中， 老年人仍然久坐不动。也许，老年人有 大多数人从采取促进健康的行为（如锻炼）中获益。这 应用程序采用社会背景，公共卫生方法来识别， 开始和维持久坐老年人的体力活动水平 俄勒冈州的波特兰市民。一系列社会心理变量将 在确定运动的预测因素和相关因素方面具有可操作性 参与的与依从性和维持相关的变量将由以下因素指导： 班杜拉的社会认知理论，以及参与者对运动的准备 将通过变化状态（跨理论）模型变量进行测量。 具体而言，自我效能和社会支持将作为关键的理论 在老年参与者中维持运动的结构。研究 将研究运动组内个体的同质性， 运动组的异质性划分的邻居，以及 环境和社会影响增强或损害健康锻炼 行为这项研究将招募600名65至75岁的老年人， 年龄，从波特兰，俄勒冈州大都市区的60个社区，到 接受为期6个月的步行计划或仅提供信息的计划。的 两组（来自30个社区的300名步行者--每组10人--和300名 定居居民）的人口和种族特征进行匹配。 后续评估将在计划后三个月和六个月进行 建成这项研究可能会导致更好地了解 影响老年人体力活动的中介变量，以及 一个低成本的社区项目， 成年人了

DESCRIPTION (adapted from investigator's abstract): There is substantial evidence to suggest that a sedentary lifestyle is associated with increased risk of disease and reduced functional capacity. Although it has been established that significant health benefits can be gained from moderate levels of regular physical activity for all ages, a significant proportion of the elderly population remain sedentary. Perhaps, the elderly population has the most to gain from adopting health-promoting behaviors such as exercise. This application adopts a social contextual, public health approach to identifying, initiating and maintaining levels of physical activity among sedentary elderly citizens in Portland, Oregon. A range of psychosocial variables will be operationalized in identifying predictors and correlates of exercise participation. Variables related to adherence and maintenance will be guided by Bandura's Social Cognitive Theory, and participants' readiness for exercise will be measured by State of Change (Transtheoretical) Model variables. Specifically, self-efficacy and social support will function as key theoretical constructs in the maintenance of exercise among elderly participants. The study will examine the homogeneity of individuals within exercise groups and the heterogeneity of exercise groups demarcated by neighborhood, as well as environmental and social influences enhancing or compromising healthy exercise behavior. The study will recruit 600 elderly citizens 65 through 75 years of age, from 60 neighborhoods in the Portland, Oregon metropolitan area, to receive either a 6-month walking program, or an information-only program. The two groups (300 walkers from 30 neighborhoods --- 10 per group --- and 300 sedentary residents) will be matched on demographic and ethnic characteristics. Follow-up assessments will be conducted at three and six months after program completion. This study is likely to lead to a greater understanding of the mediating variables influencing senior physical activity, and the feasibility of a low-cost community program for increasing exercise among elderly sedentary adults.