RAND Corporation, Santa Monica, CA, USA.
Prev Med. 2013 Nov;57(5):483-7. doi: 10.1016/j.ypmed.2013.06.021. Epub 2013 Jul 1.
To quantify the contribution of U.S. neighborhood parks to the time spent in moderate-to-vigorous physical activity (MVPA) by the local population.
Observational data on the use of 10 parks in five US cities collected during summer and fall 2008 were analyzed by a model-averaging approach. Estimated MVPA time accrued in parks was compared to estimated total MVPA time accrued by the local population, based upon national estimates.
On average, parks provided roughly 4000hours of use and 1500 MVPA hours per week. Park use accounted for approximately 50% of the vigorous physical activity (VPA) time of those living within 0.5 miles of the park and 16% of those living within 1.0 miles of the park. Parks accounted for a modest proportion of moderate physical activity (MPA) time, about 14% and 4% for those living within 0.5 miles and 1.0 miles of the park, respectively.
Parks have significant roles in supporting vigorous physical activity of the local population. Because they are underutilized and vigorous activity is critical to child development and adult physical fitness, efforts should be made to promote vigorous activity within local parks.
量化美国邻里公园对当地居民进行中高强度身体活动(MVPA)时间的贡献。
通过模型平均方法分析了 2008 年夏季和秋季五个美国城市的 10 个公园使用情况的观测数据。根据国家估计,将公园中累计的估计 MVPA 时间与当地居民累计的估计总 MVPA 时间进行比较。
平均而言,公园每周提供约 4000 小时的使用时间和 1500 小时的 MVPA 时间。对于居住在公园 0.5 英里范围内的人,公园使用量约占剧烈身体活动(VPA)时间的 50%,对于居住在公园 1.0 英里范围内的人,公园使用量约占 VPA 时间的 16%。公园在中等身体活动(MPA)时间中所占比例较小,对于居住在公园 0.5 英里和 1.0 英里范围内的人,分别约占 MPA 时间的 14%和 4%。
公园在支持当地居民进行剧烈身体活动方面发挥着重要作用。由于公园未得到充分利用,而且剧烈活动对儿童发育和成人身体健康至关重要,因此应努力促进当地公园内的剧烈活动。