Maddison Ralph, Jiang Yannan, Vander Hoorn Stephen, Exeter Daniel, Mhurchu Cliona Ni, Dorey Enid
Clinical Trials Research Unit, University of Auckland, Auckland, New Zealand.
Pediatr Exerc Sci. 2010 Aug;22(3):392-407. doi: 10.1123/pes.22.3.392.
This study aimed to describe the location and intensity of free-living physical activity in New Zealand adolescents during weekdays and weekend days using Global Positioning Systems (GPS), accelerometry, and Geographical Information Systems (GIS). Participants (n = 79) aged 12-17 years (M = 14.5, SD 1.6) recruited from two large metropolitan high schools each wore a GPS watch and an accelerometer for four consecutive days. GPS and accelerometer data were integrated with GIS software to map the main locations of each participant's episodes of moderate-vigorous physical activity. On average participants performed 74 (SD 36) minutes of moderate and 7.5 (SD 8) minutes of vigorous activity per day, which on weekdays was most likely to occur within a 1 km radius of their school or 150 meters of their home environment. On weekends physical activity patterns were more disparate and took place outside of the home environment. Example maps were generated to display the location of moderate to vigorous activity for weekdays and weekends.
本研究旨在利用全球定位系统（GPS）、加速度计和地理信息系统（GIS）描述新西兰青少年在工作日和周末的自由生活体力活动的地点和强度。从两所大型都市高中招募了年龄在12 - 17岁（M = 14.5，标准差1.6）的79名参与者，他们每人连续四天佩戴GPS手表和加速度计。GPS和加速度计数据与GIS软件相结合，以绘制每个参与者中等至剧烈体力活动时段的主要地点。参与者平均每天进行74（标准差36）分钟的中等强度活动和7.5（标准差8）分钟的剧烈活动，在工作日，这些活动最有可能发生在学校半径1公里范围内或家庭环境150米范围内。在周末，体力活动模式更加分散，且发生在家庭环境之外。生成了示例地图以展示工作日和周末中等至剧烈活动的地点。
