Environmental supportiveness for physical activity in English schoolchildren: a study using Global Positioning Systems
Environmental supportiveness for physical activity in English schoolchildren: a study using Global Positioning Systems
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DOI：
10.1186/1479-5868-6-42
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发表时间：
2009-07-17
影响因子：
8.7
通讯作者：
van Sluijs, Esther M. F.
中科院分区：
文献类型：
--
作者：
Jones, Andrew P.;Coombes, Emma G.;van Sluijs, Esther M. F.
背景：越来越多的证据表明，环境在影响儿童和成人的身体活动方面发挥着作用。由于儿童在行为选择方面的自主性较低，邻里环境的适应性可能是他们是否能够积极活动的一个重要决定因素。然而，我们对儿童进行体力活动所使用的环境类型知之甚少。本研究采用加速度计和全球定位系统技术，以英国学龄儿童为样本，对连续进行中到剧烈体力活动（MVPA）的环境特征进行了研究。（运动，身体活动和饮食行为：年轻人的环境决定因素），一个队列的2064 9-10岁的诺福克，英格兰，在2007年招募。孩子们连续四天佩戴ActiGraph GT 1 M加速度计和Garmin Forerunner 205 GPS装置。将加速度计数据点与GPS位置相匹配，并确定MVPA的发作（5分钟或更长时间）。在地理信息系统中开发的详细土地覆盖数据集覆盖了Bout位置，以确定支持MVPA的环境类型。结果采用描述性statistics.Results：男孩也比女孩更活跃，平均花费20（SD 23）与11（SD 15）分钟，每天在MVPA发作。花更多时间在户外的儿童更活跃（p = 0.002），特别是女孩和生活在农村地区的儿童（均p < 0.05）。儿童往往是活跃的离家近，所有回合的时间发生在社区内的63%，虽然男孩（p = 0.05）和农村儿童（p = 0.01）更有可能在他们的社区外漫游。在城市儿童中，花园（28%的回合时间）和街道环境（20%）是MVPA回合最常用的环境。其中农村儿童农田（22%）和草地（18%）是最常用的。结论：这项研究已经开发出一种新的方法，用于识别的环境中进行了连续的体力活动。研究结果强调了提供城市花园和绿地以及维护安全的街道环境作为儿童活动场所的重要性。
Background: There is increasing evidence that the environment plays a role in influencing physical activity in children and adults. As children have less autonomy in their behavioural choices, neighbourhood environment supportiveness may be an important determinant of their ability to be active. Yet we know rather little about the types of environment that children use for bouts of physical activity. This study uses accelerometery and global positioning system technologies to identify the charactieristics of environments being used for bouts of continuous moderate to vigorous physical activity (MVPA) in a sample of English schoolchildren.Methods: The study used a convenience sample of 100 children from SPEEDY (Sport, Physical activity and Eating behaviour: Environmental Determinants in Young people), a cohort of 2064 9-10 year-olds from Norfolk, England, recruited in 2007. Children wore an ActiGraph GT1M accelerometer and a Garmin Forerunner 205 GPS unit over four consecutive days. Accelerometery data points were matched to GPS locations and bouts (5 minutes or more) of MVPA were identified. Bout locations were overlaid with a detailed landcover dataset developed in a GIS to identify the types of environment supporting MVPA. Findings are presented using descriptive statistics.Results: Boys were also more active than girls, spending an average of 20 (SD 23) versus 11 (SD 15) minutes per day in MVPA bouts. Children who spent more time outside the home were more active (p = 0.002), especially girls and children living in rural locations (both p < 0.05). Children tended to be active close to home, with 63% of all bout time occurring inside neighbourhoods, although boys (p = 0.05) and rural children (p = 0.01) were more likely to roam outside their neighbourhood. Amongst urban children, gardens (28% of bout time) and the street environment (20%) were the most commonly used environments for MVPA bouts. Amongst rural children farmland (22%) and grassland (18%) were most frequently used.Conclusion: The study has developed a new methodology for the identification of environments in which bouts of continuous physical activity are undertaken. The results highlight the importance of the provision of urban gardens and greenspaces, and the maintenance of safe street environments as places for children to be active.