Assessing the Contribution of Parks to Physical Activity Using Global Positioning System and Accelerometry
Assessing the Contribution of Parks to Physical Activity Using Global Positioning System and Accelerometry
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DOI：
10.1249/mss.0b013e318293330e
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发表时间：
2013-10-01
期刊：
影响因子：
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通讯作者：
Cohen, Deborah A.
中科院分区：
文献类型：
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作者：
Evenson, Kelly R.;Wen, Fang;Cohen, Deborah A.
目的：公园为许多社区的体育活动提供了免费的选择。人们花多少时间使用公园以及公园对他们的身体活动的贡献尚不清楚。这项研究描述了不同的成年人样本中的公园使用和身体活动的模式。方法：来自美国五个州的248名成年人在31个学习公园或附近注册。参与者同时佩戴全球定位系统（GPS）监测器（Qstarz BT-Q1000 X）和ActiGraph加速计（GT 1 M），持续3周。公园是从当地和国家公园形状文件绘制的。公园参观和往返公园的旅行来自客观数据。结果如下：参与者每周访问公园的中位数为2.3次，公园访问的中位数为42.0分钟。总体而言，参与者进行中度活动的中位数为21.7分钟。d（-1）和剧烈活动的中位数为0.1分钟。d（-1），平均8.2%的中度活动和9.4%的剧烈活动发生在公园内。在那些至少有一个公园访问（n = 218），每分钟计数，中度，中度到剧烈的体力活动（MVPA），每天在MVPA发作的次数和时间，久坐不动的行为都较高的日子，当一个公园参观相比，当一个公园没有参观。考虑到主动旅行的几个定义，步行或骑自行车往返公园增加了额外的3.7-6.6分钟的平均MVPA每次公园访问。结论：公园作为体育活动的场所和目的地，但未得到充分利用。在这条调查线的下一步之一是了解公园的特点，更经常地作为一个地方和目的地的身体活动。
Purpose: Parks offer a free option for physical activity in many communities. How much time people spend using parks and the contribution that parks makes to their physical activity is not known. This study describes patterns of park use and physical activity among a diverse adult sample. Methods: From five US states, 248 adults enrolled in or near 31 study parks. Participants wore a global positioning system (GPS) monitor (Qstarz BT-Q1000X) and an ActiGraph accelerometer (GT1M) concurrently for 3 wk. Parks were mapped from local and national park shape files. Park visits and travel to and from the parks were derived from the objective data. Results: Participants visited parks a median of 2.3 times per week, and park visits lasted a median of 42.0 min. Overall, participants engaged in a median of 21.7 min.d(-1) of moderate activity and 0.1 min.d(-1) of vigorous activity, with an average of 8.2% of all moderate and 9.4% of all vigorous activity occurring within the parks. Among those with at least one park visit (n = 218), counts per minute, moderate, moderate-to-vigorous physical activity (MVPA), number and time in MVPA bouts per day, and sedentary behavior were all higher on days when a park was visited compared with days when a park was not visited. Considering several definitions of active travel, walking or bicycling to and from the park added an additional 3.7-6.6 mean minutes of MVPA per park visit. Conclusions: Parks contributed as a place and destination for physical activity but were underused. One of the next steps in this line of inquiry is to understand characteristics of parks used more often as a place and destination for physical activity.