Janssen Ian
Queen's University.
Can J Public Health. 2014 Feb 4;105(1):e22-7. doi: 10.17269/cjph.105.4154.
To quantify and compare the number of calories that school-aged Canadian children expend to meet established benchmarks for active play and organized physical activities (i.e., organized sport, physical education, active transportation).
This study was informed by the benchmarks (i.e., amount of activity a child needs to be sufficiently active) and grades (i.e., how Canada as a country is doing) for the physical activity domains included in the Active Healthy Kids Canada Report Card on Physical Activity for Children and Youth. Established physical activity energy expenditure data were used to calculate the number of calories that the average 6-11 year old child would expend to meet the Report Card physical activity benchmarks. The increase in energy expenditure at the population-level that would occur if each Report Card grade was to improve by one letter grade was estimated based on the aforementioned estimates and the proportion of the population impacted should the grade improve.
When averaged across all 365 days of the year, the average 6-11 year old Canadian would expend an added 186 kcal/day to meet the active play benchmark, 23 kcal/day to meet the organized sport benchmark, 6 kcal/day to meet the physical education benchmark, and 16 kcal/day to meet the active transportation to school benchmark. Increasing the Report Card grades for these four domains would address 37%, 1%, 1%, and 3% of the energy gap, respectively.
Initiatives aimed at increasing physical activity in an attempt to address childhood obesity should include an active play component.
量化并比较加拿大学龄儿童为达到积极玩耍和有组织体育活动（即有组织的运动、体育教育、积极出行）既定基准所消耗的卡路里数量。
本研究参考了《加拿大儿童与青少年身体活动健康报告卡》中身体活动领域的基准（即儿童充分活跃所需的活动量）和等级（即加拿大作为一个国家在这方面的表现）。利用既定的身体活动能量消耗数据来计算6至11岁儿童平均达到报告卡身体活动基准所需消耗的卡路里数量。根据上述估计以及等级提高时受影响人群的比例，估算出如果报告卡每个等级提高一个字母等级，在人群层面能量消耗的增加量。
一年365天平均计算，6至11岁加拿大儿童为达到积极玩耍基准每天需额外消耗186千卡，为达到有组织运动基准每天需额外消耗23千卡，为达到体育教育基准每天需额外消耗6千卡，为达到步行或骑行上学基准每天需额外消耗16千卡。提高这四个领域的报告卡等级将分别弥补能量差距的37%、1%、1%和3%。
旨在增加身体活动以解决儿童肥胖问题的举措应包括积极玩耍的内容。
