Larouche Richard, Lloyd Meghann, Knight Emily, Tremblay Mark S
Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ontario, Canada.
Pediatr Exerc Sci. 2011 Aug;23(3):322-30. doi: 10.1123/pes.23.3.322.
The current investigation assessed the impact of active school transportation (AST) on average daily step counts, body mass index (BMI) and waist circumference in 315 children in Grades 4-6 who participated to Cycle 2 of the Canadian Assessment of Physical Literacy (CAPL) pilot testing. T-tests revealed a significant association between AST and lower BMI values (18.7 ± 3.3 vs. 19.9 ± 3.8 kg/m(2)). The active commuters accumulated an average of 662 more steps per day, and their waist circumference was lower by an average of 3.1 cm, but these differences were not statistically significant. ANCOVA analyses controlling for age and step counts, found trends toward lower BMI and waist circumference values among the active commuters. These results suggest that AST may be a valid strategy to prevent childhood obesity; further research is needed to determine more precisely the impact of AST on body composition, and the direction of the relationship.
当前的调查评估了积极的学校交通方式（AST）对315名4至6年级儿童平均每日步数、体重指数（BMI）和腰围的影响，这些儿童参与了加拿大身体素养评估（CAPL）试点测试的第二阶段。t检验显示AST与较低的BMI值之间存在显著关联（18.7±3.3 vs. 19.9±3.8 kg/m²）。积极通勤的学生平均每天多走662步，他们的腰围平均小3.1厘米，但这些差异无统计学意义。控制年龄和步数的协方差分析发现，积极通勤的学生中BMI和腰围值有降低的趋势。这些结果表明，AST可能是预防儿童肥胖的有效策略；需要进一步研究以更精确地确定AST对身体成分的影响以及这种关系的方向。
