Kain Juliana, Leyton Bárbara, Soto-Sánchez Johana, Concha Fernando
Institute of Nutrition and Food Technology (INTA), University of Chile, Av El Líbano 5524, Santiago, Macul, Chile.
University of Playa Ancha, Av Playa Ancha 850, Valparaíso, Chile.
BMC Res Notes. 2018 Jul 3;11(1):438. doi: 10.1186/s13104-018-3536-x.
After categorizing preschool children into "active and low active" according to their moderate and vigorous physical activity (MVPA) in PE classes (PE), we compared these two groups within each sex and by sex in: (a) % MVPA and MVPA minutes accrued from each fundamental motor skill (FMS) during PE and (b) % MVPA during school time.
532 children (mean age 5.2 years, 50% girls) were selected from a nationwide program which provides 3 weekly PE. Children wore accelerometers during one school day which included PE. We recorded the type and duration of each activity indicated by the teacher, classifying each one into the corresponding FMS, extracting its MVPA minutes from the accelerometer software. Children were categorized into active and low active. Comparisons used T-tests. In PE, active children accumulate 40 and 36 percentage points (pp) more MVPA minutes (boys and girls respectively), while during school time, 4 pp more in each sex. Girls are significantly less active. Just considering locomotion, active boys and girls accumulate 11 more MVPA minutes during PE. Active boys surpass the MVPA guideline for PE, while active girls almost reach it. Low active children (especially girls) should intensify locomotor activities during PE.
根据学龄前儿童在体育课中的中等强度和剧烈身体活动（MVPA）将其分为“活跃”和“低活跃”两类后，我们在以下方面按性别对这两组进行了比较，并在每组性别内部进行了比较：（a）体育课期间每项基本运动技能（FMS）产生的MVPA百分比和MVPA分钟数，以及（b）在校期间的MVPA百分比。
从一项全国性计划中选取了532名儿童（平均年龄5.2岁，50%为女孩），该计划每周提供3节体育课。儿童在包括体育课在内的一个上学日佩戴加速度计。我们记录了教师指示的每项活动的类型和持续时间，将每项活动分类到相应的FMS中，并从加速度计软件中提取其MVPA分钟数。儿童被分为活跃组和低活跃组。比较采用t检验。在体育课上，活跃儿童积累的MVPA分钟数分别比男孩和女孩多40和36个百分点（pp），而在校期间，每种性别的多4个pp。女孩的活跃度明显较低。仅考虑移动，活跃的男孩和女孩在体育课期间积累的MVPA分钟数多11分钟。活跃男孩超过了体育课的MVPA指导标准，而活跃女孩几乎达到了该标准。低活跃儿童（尤其是女孩）应在体育课期间加强移动活动。
