Cancer Society Social & Behavioural Research Unit, Department of Preventive and Social Medicine, University of Otago, New Zealand.
Prev Med. 2010 May-Jun;50(5-6):235-40. doi: 10.1016/j.ypmed.2010.02.002. Epub 2010 Feb 11.
To identify the proportion of children's physical activity occurring in public parks with playgrounds.
Children (n=184) aged 5 to 10 years were recruited from schools located in two low socio-economic status communities in Dunedin, New Zealand. Accelerometers (Actigraph GT1M) and global positioning system units (Globalsat DG-100) were used to quantify and identify where physical activity had occurred over a 7-day period. Cross-sectional data were collected October to December 2007 (southern hemisphere spring) and the child's height and weight were measured at school.
At least 84% of participants had accelerometer and global positioning system data available for five or more hourly periods per day, for at least 4 days. Overall, 1.9% of recorded activity took place at city parks (95% confidence interval: 1.4, 2.4), although this was 2.7% (95% confidence intervals: 0.7, 4.6) among obese children.
Accelerometers and GPS data was able to be successfully recorded and matched among this age group. The proportion of children's activity taking place in parks with playgrounds was low, although this may still be important for some subgroups.
确定有游乐设施的公共公园中儿童身体活动的比例。
从新西兰达尼丁两个社会经济地位较低的社区的学校招募了 184 名 5 至 10 岁的儿童。使用加速度计（Actigraph GT1M）和全球定位系统单元（Globalsat DG-100）来量化和识别 7 天内身体活动发生的地点。横断面数据于 2007 年 10 月至 12 月（南半球春季）收集，在学校测量儿童的身高和体重。
至少 84%的参与者每天有 5 个或更多小时的加速度计和全球定位系统数据，至少有 4 天。总体而言，有 1.9%的记录活动发生在城市公园（95%置信区间：1.4，2.4），尽管肥胖儿童的这一比例为 2.7%（95%置信区间：0.7，4.6）。
能够成功地记录并匹配这个年龄段的加速度计和 GPS 数据。在有游乐设施的公园中，儿童活动的比例很低，但这对某些亚组来说可能仍然很重要。
