Abstract：
Parks can provide a low-cost setting for safe physical activity, but older adults are underrepresented among park users in the United States. Using data from a population-representative survey in 2015 and 2018 among adults aged 60 years and older living in Philadelphia, we tested whether perceived access was a mechanism by which objectively-measured park access predicted self-reported physical activity. After controlling for individual-level factors and neighborhood characteristics, we found a statistically significant pathway from overall park area and within-park tree canopy to increased physical activity, mediated by perceived park access. These results highlight the importance of tree canopy for older adult park access and physical activity.
摘要：
公园可以为安全的身体活动提供低成本的环境，但是在美国，老年人在公园使用者中的代表性不足。使用2015年和2018年对居住在费城的60岁及以上的成年人进行的人口代表性调查数据，我们测试了感知进入是否是客观测量的公园进入预测自我报告的身体活动的机制。在控制了个体层面的因素和邻里特征之后，我们发现了从整个公园面积和公园内树冠到身体活动增加的统计显着途径，由感知到的公园通道介导。这些结果突显了树冠对于老年人进入公园和进行体育锻炼的重要性。
