Maximum oxygen uptake and objectively measured physical activity in Danish children 6-7 years of age: the Copenhagen school child intervention study
Maximum oxygen uptake and objectively measured physical activity in Danish children 6-7 years of age: the Copenhagen school child intervention study
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DOI：
10.1136/bjsm.2004.015230
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发表时间：
2005-10-01
影响因子：
18.4
通讯作者：
Andersen, LB
中科院分区：
文献类型：
--
作者：
Eiberg, S;Hasselstrom, H;Andersen, LB
目的：提供6 - 7岁儿童最大摄氧量（$\dot{V}O_{2MAX}$）和身体活动的规范数据，并分析这些变量之间的关联。
方法：在哥本哈根两个郊区社区的学前班中，对366名男孩（平均（标准差）6.8（0.4）岁）和332名女孩（6.7（0.4）岁）在渐进式跑步机运动期间测量$\dot{V}O_{2MAX}$。用加速度计测量习惯性身体活动。
结果：男孩的$\dot{V}O_{2MAX}$无论是绝对值（1.19（0.18）升/分钟对1.06（0.16）升/分钟（+11%），p < 0.001）还是相对于体重（48.5（6.0）毫升/千克/分钟对44.8（5.6）毫升/千克/分钟（+8%）；p < 0.001）都高于女孩。当相对于瘦体重（LBM）表示时，男孩和女孩之间$\dot{V}O_{2MAX}$的差异降至+2%。绝对$\dot{V}O_{2MAX}$与瘦体重、体重和身高相关（均p < 0.001）。男孩比女孩身体活动更活跃（平均计数+9.4%，p < 0.001），并且即使比较具有相同$\dot{V}O_{2MAX}$的男孩和女孩，男孩也更活跃。当比较较高强度的持续活动时，性别之间身体活动的差异更大。
结论：男孩的$\dot{V}O_{2MAX}$高于女孩（+11%），即使相对于体重（+8%）和瘦体重（+2%）也是如此。相对于体重的$\dot{V}O_{2MAX}$的大部分差异可由女孩较高的体脂百分比来解释。当比较具有相同$\dot{V}O_{2MAX}$的男孩和女孩时，男孩进行至少中等强度运动的时间更长。
Objectives: To provide normative data on maximum oxygen uptake ((V) over dot O(2)MAX) and physical activity in children 6 - 7 years of age and analyse the association between these variables.Methods: V. O2MAX was measured in 366 boys ( mean (SD) 6.8 (0.4) years of age) and 332 girls (6.7 ( 0.4) years of age) from preschool classes in two suburban communities in Copenhagen, during a progressive treadmill exercise. Habitual physical activity was measured with accelerometers.Results: Boys had higher V. O2MAX both in absolute values (1.19 (0.18) v 1.06 (0.16) litres/min (+ 11%), p< 0.001) and relative to body weight (48.5 (6.0) v 44.8 (5.6) ml/kg/ min (+ 8%); p< 0.001) than girls. The difference in (V) over do O(2)MAX between boys and girls decreased to + 2% when expressed relative to lean body mass (LBM). Absolute (V) over dot O(2)MAX was related to LBM, body mass, and stature ( all p< 0.001). Boys were more physically active than girls ( mean counts + 9.4%, p< 0.001), and even when boys and girls with the same (V) over dot O(2)MAX were compared, boys were more active. The difference in physical activity between the sexes was higher when sustained activity of higher intensity was compared.Conclusions: (V) over dot O(2)MAX is higher in boys than girls (+ 11%), even when related to body mass (+ 8%) and LBM (+ 2%). Most of the difference in (V) over dot O(2)MAX relative to body mass was explained by the larger percentage body fat in girls. When boys and girls with the same (V) over dot O(2)MAX were compared, boys engaged in more minutes of exercise of at least moderate intensity.