Encouraging kids to hop,skip,and jump：Emphasizing the need for higher-intensity physical activity in childcare

1.Introduction Daily physical activity（PA）participation is crucial to the health and well-being of young children.Along with total physical activity（TPA;all-intensity）,moderate-to-vigorous physical activity（MVPA）,or energetic play,is associated with greater health benefits,particularly for preschoolers（3-4 years）,including but not limited to improved bone and skeletal properties and cognitive and psychosocial health.1 Centered on this,both Canada and Australia have recently established 24-Hour Movement Guidelines for the Early Years,recommending that.

Habitual physical activity levels and sedentary time of children in different childcare arrangements from a nationally representative sample of Canadian preschoolers

Background:Children spend substantial time in childcare,and the reasons parents choose a particular childcare type may differ by family.However,little is known about how childcare type influences habitual(full day)activity levels among children.Therefore,exploring patterns between childcare type and habitual physical activity(PA)(i.e.,light,moderate-to-vigorous PA(MVPA),and total PA)and sedentary time(ST)in young Canadian children is needed.Methods:A nationally representative sample of preschoolers from Cycles 3 and 4 of the Canadian Health Measures Survey was used in this cross-sectional study.Childcare type(e.g.,center-based childcare,home-based childcare,home with parent,kindergarten)was reported by parents.Preschoolers wore an Actical accelerometer for 7 days.Device and population-spcific cut-points were applied to delineate PA intensities and ST.Population means and sample totals were calculated to examine average daily and hourly rates of activity.Results:Preschoolers’rates of MVPA and total PA from the 4 childcare arrangements ranged from 65.99 min/day to 74.62 min/day(5.48-6.18 min/h)and 274.20 min/day to 281.66 min/day (22.69-23.21 min/h),respectively,while ST ranged from 443.13 min/day to 460.57 min/day(36.80-37.31 min/h).No significant differences were observed in daily or hourly rates of activity.Conclusion:This study provides a snapshot of the levels of PA and ST among preschoolers in various childcare settings at a national level,with no differences observed in habitual activity levels based on childcare enrollment.Additional research is needed to clarify the relationship between young children’s PA and childcare type,with consideration given to the quality of the childcare settings.

学龄前儿童体力活动水平研究综述

本综述系统介绍了学龄前儿童(2-6岁)体力活动领域的相关研究。基于国民体育与体育教育协会(NAsPE)对学前儿童的体育运动指导原则进行测量,约半数儿童未达到身体锻炼建议的标准。仅有54%的参与者达到每日至少60分钟的身体活动水平。其中,男童比女童更多地参与体力活动。因此,一方面,需要在儿童中大力开展身体活动的有效干预;同时,鉴于标准化测量手段对于后续的比较研究与追踪研究十分重要,因而对于儿童体力活动的客观测量评估工具需进一步标化统一。