Alfred Deakin Postdoctoral Research Fellow, Centre for Physical Activity and Nutrition Research, Deakin University, Burwood, Victoria, Australia.
J Sch Health. 2011 Sep;81(9):545-51. doi: 10.1111/j.1746-1561.2011.00625.x.
School recess provides a daily opportunity for physical activity engagement. The purpose of this study was to examine physical activity levels during recess by gender, ethnicity, and grade, and establish the contribution of recess to daily school physical activity levels.
Two hundred and ten children (45% boys) from grades 3 to 6 in 4 elementary schools had their physical activity during school quantified using uni-axial accelerometry every 5 seconds for 5 consecutive school days. Data were collected in fall 2009. The proportion of time spent engaged in physical activity during daily school recess was determined using existing age-appropriate cutpoints. The relative contribution of recess to school day physical activity was also determined.
Boys were more active than girls during recess. Girls engaged in more sedentary activity than boys. No main effects for ethnicity were observed. Children in grades 3 and 5 were more active than children in grades 4 and 6. Recess contributed 17.9% and 15.5% toward boys' and girls' school day moderate-to-vigorous physical activity, respectively.
Children engaged in physical activity during recess, though interventions may be needed to increase the intensity of activity in this context.
课间休息为学生提供了每天参与身体活动的机会。本研究旨在通过性别、种族和年级来检查课间休息时的身体活动水平，并确定课间休息对日常学校身体活动水平的贡献。
2009 年秋季，在 4 所小学的 3 至 6 年级中，使用单轴加速度计每 5 秒对 5 个连续上学日的学生身体活动进行量化。课间休息期间身体活动的时间比例是通过现有的适合年龄的切点来确定的。课间休息对学校日身体活动的相对贡献也被确定。
男孩在课间休息时比女孩更活跃。女孩比男孩更多地进行久坐活动。种族没有显著影响。3 年级和 5 年级的孩子比 4 年级和 6 年级的孩子更活跃。课间休息分别为男孩和女孩的学校日中等至剧烈身体活动贡献了 17.9%和 15.5%。
孩子们在课间休息时进行身体活动，但在这种情况下，可能需要干预措施来提高活动强度。
