Energy expenditure of the physical activity across the curriculum intervention
Energy expenditure of the physical activity across the curriculum intervention
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DOI：
10.1249/mss.0b013e31816d6591
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发表时间：
2008-08-01
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影响因子：
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通讯作者：
Donnelly, Joseph E.
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文献类型：
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作者：
Honas, Jeffery J.;Washburn, Richard A.;Donnelly, Joseph E.
体育活动通常是旨在减少儿童体重增加的干预措施的一个组成部分。确定这些干预措施引起的能量消耗（EE）是否足以降低体重增加的速度是至关重要的。目的：量化跨课程体育活动（PAAC）干预的情感表达。这种干预包括每天两次10分钟的体力活动学术课程，由任课教师授课。方法：我们使用间接量热计（IC） （COSMED K4b(2)）和加速度计（ActiGraph） （AC）评估了19名男性和19名女性PAAC的EE。采用独立t检验评价性别差异。使用相关t检验来检验IC和AC评估的情感表达之间的差异。使用Bland-Altman图来评估IC测量的情感表达与AC估计的情感表达之间的一致性。计算了用IC测量的情感表达与用AC估计的情感表达之间的Pearson相关性。结果：在年龄、BMI或情感表达方面没有显著的性别差异；因此，不进行性别分析。IC测量的平均EE为3.1 +/- 1.0 kcal.min(-1) （3.4 METs）。AC估计的平均EE （1.8 +/- 0.9 kcal.min(-1)）显著低于IC测量的平均EE（平均低估= 1.3 kcal.min(-1)） （P < 0.05）。Bland-Altman图显示，随着情感表达水平的增加，低估也随之增加。95%的一致性限很大（-2.8 ~ +0.3 kcal.min(-1)）。IC测定的情感表达与AC测定的情感表达相关性为r = 0.68 （P < 0.001）。结论：PAAC引起的EE水平可能会防止儿童体重过度增加。AC明显低估了PAAC课程的情感表达，在这种情况下可能无法提供有用的情感表达估计。
Physical activity is frequently a component of interventions designed to diminish weight gain in children. It is essential to determine whether the energy expenditure (EE) elicited by these interventions is sufficient to reduce the rate of weight gain. Purpose: To quantify the EE of the Physical Activity across the Curriculum (PAAC) intervention. This intervention involved two 10-min physically active academic lessons per day, taught by classroom teachers. Methods: We assessed EE of PAAC in 19 males and 19 females using both an indirect calorimeter (IC) (COSMED K4b(2)) and an accelerometer (ActiGraph) (AC). Independent t-tests were used to evaluate gender differences. Dependent t-tests were used to examine the difference between EE assessed by IC and AC. The agreement between EE measured by IC and estimated by AC was evaluated using a Bland-Altman plot. A Pearson correlation between EE measured by IC and estimated by AC was calculated. Results: There were no significant gender differences for age, BMI, or EE; therefore, analyses by gender were not performed. The mean EE measured by IC was 3.1 +/- 1.0 kcal.min(-1) (3.4 METs). Mean EE estimated by AC (1.8 +/- 0.9 kcal.min(-1)) was significantly lower (P < 0.05) than EE measured by IC (mean underestimation = 1.3 kcal.min(-1)). The Bland-Altman plot suggested increased underestimation with increased levels of EE. The 95% limits of agreement were large (-2.8 to +0.3 kcal.min(-1)). The correlation between EE measured by IC and estimated by AC was r = 0.68 (P < 0.001). Conclusion: PAAC elicited a level of EE that may prevent excessive weight gain in children. AC significantly underestimated the EE of PAAC lessons and may not provide useful EE estimates in this context.