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Exercise may improve immune function by increasing lymphocyte activation in patients with breast cancer following treatment.

Background:Health scholars purport that park proximity and social support promotes physical activity and health. However, few studies examine the combined contributions of these constructs in shaping physical activity and health.Purpose:In this study, the contributions of environmental and social characteristics in shaping park use, physical activity, and health are examined.Methods:A survey was distributed to 1515 older adults in Cleveland, Ohio. Results: Path analysis indicated that social support was directly related to health. Perceived park walking proximity was related to physical activity and health through park use frequency. Park proximity was directly related to park use duration.Conclusions:Results suggest that environmental and social characteristics contribute to physical activity and health, but perceptions may also be a prerequisite to park use, daily physical activity, and health.

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Recent nation-wide data on self-reported leisure-time physical inactivity reveals that about one third of the American population age 50 and over is sedentary. Several national organizations are promoting leisure-time physical activity among older adults as a strategy for this population to adapt to agerelated declines in mental and physical functioning and to improve their quality of life. Inferences from past research suggest that social support is significant in enabling older adults to achieve better health outcomes. Unfortunately, little is known about the relationship between health and wellbeing of older adults depending upon the amount and type of social support received for leisure activities, i.e., social support for leisure (SSL). In this study, we investigated the influence of SSL sources (family members, friends, and acquaintances) on physical activity levels and wellbeing, i.e., life satisfaction, stress, and health among older adults (age 50 and over). Study findings highlighted the importance of support from friends for increasing leisure and recreational physical activity participation among older adults. Findings revealed that both family and friends' support for leisure had positive effects on older adults' perception of wellbeing. Another important finding in this study was the positive relationship between family social support for leisure and the respondents' life-satisfaction levels.

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