a Department of Epidemiology, Gillings School of Global Public Health , University of North Carolina - Chapel Hill , Chapel Hill , North Carolina , USA.
b School of Urban and Environmental Engineering , Ulsan National Institute of Science and Technology , Ulsan , Korea.
J Sports Sci. 2018 Nov;36(22):2544-2550. doi: 10.1080/02640414.2018.1469225. Epub 2018 Apr 30.
This longitudinal study described park usage and assessed the contribution of parks to moderate to vigorous physical activity (MVPA) among adolescent girls. High school girls from California (n = 131) and Minnesota (n = 134) wore a global positioning system (GPS) monitor and accelerometer for 6 consecutive days at two time points, one year apart. Park visits were classified by linking the GPS, accelerometer, and park and built environment data around home and school locations into a geographic information system. At baseline, 20% of girls visited a park at least once (mean 0.1 times/day), which was similar one year later (19%, mean 0.1 times/day). Girls lived a mean Euclidean distance of 0.2 miles to the nearest park at both times. Among all park visits, the mean Euclidean distance of the park visited was 4.1 (baseline) and 3.9 miles (follow-up). The average duration of park visits was higher at baseline (63.9 minutes) compared to follow-up (38.4 minutes). On days when a park was visited, MVPA was higher than on days when a park was not visited. On average, 1.9% (baseline) and 2.8% (follow-up) of MVPA occurred in parks. In this study, parks were an under-used resource for adolescent girls, particularly for MVPA.
本纵向研究描述了公园使用情况，并评估了公园对青少年女性中中等到剧烈身体活动（MVPA）的贡献。来自加利福尼亚州（n=131）和明尼苏达州（n=134）的高中女生在相隔一年的两个时间点上，连续 6 天佩戴全球定位系统（GPS）监测器和加速度计。通过将 GPS、加速度计以及家庭和学校周围的公园和建筑环境数据链接到地理信息系统中，对公园访问进行了分类。在基线时，有 20%的女生至少访问过一次公园（平均每天 0.1 次），一年后情况相似（19%，平均每天 0.1 次）。两次测量时，女生到最近公园的平均欧几里得距离均为 0.2 英里。在所有公园访问中，访问公园的平均欧几里得距离分别为 4.1 英里（基线）和 3.9 英里（随访）。与随访相比，基线时公园访问的平均持续时间更长（63.9 分钟）。在访问公园的日子里，MVPA 高于未访问公园的日子。平均而言，MVPA 有 1.9%（基线）和 2.8%（随访）发生在公园中。在这项研究中，公园对于青少年女性来说是一种未充分利用的资源，特别是对于 MVPA 而言。
