Lunchtime enjoyment activity play (LEAP) intervention

This matched controlled trial, the LEAP intervention study, was uniquely tailored to compare the intervention and control schools at baseline (March/April, 2010), post-testing (after 7-weeks; April-June, 2010) and at a follow-up (after 8-months; November, 2010). The intervention provided movable/recycled materials for children to use in the school playground with usual playground supervision by teachers (yard duty). Children in the control school continued their PA with their usual sports equipment, fixed playground equipment and teacher supervision.

本项匹配对照试验——LEAP干预研究，专为对比干预组与对照组学校设置，分别于基线阶段（2010年3/4月）、后测阶段（干预7周后；2010年4-6月）及随访阶段（干预8个月后；2010年11月）完成测评。干预组为学生提供可移动/可回收活动材料用于校园操场活动，同时保留教师常规的操场值守（yard duty）。对照组学校的学生则继续使用常规体育器材、固定操场设施开展身体活动（Physical Activity，PA），并由教师进行常规监督。