Relation between physical activity and energy expenditure in a representative sample of young children.
Relation between physical activity and energy expenditure in a representative sample of young children.
复制标题
幼儿代表性样本中体力活动与能量消耗之间的关系。
DOI：
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发表时间：
2004
影响因子：
7.1
通讯作者：
S. Grant
中科院分区：
文献类型：
--
作者：
C. Montgomery;J. Reilly;D. Jackson;L. Kelly;C. Slater;J. Paton;S. Grant
背景
预防和治疗儿童肥胖的策略需要更好地了解自由生活体力活动模式与总能量消耗（TEE）之间的关系。
目的
我们评估了TEE和体力活动水平（PAL）之间的关系，在从事不同强度的体力活动。
设计
我们使用了一个横断面研究的104名儿童（中位年龄：5.4岁）在苏格兰。用双标记水（DLW）测定TEE，并预测静息能量消耗以确定PAL。通过加速度计和DLW测量同时评估久坐、轻强度活动和中等强度和剧烈强度体力活动（MVPA）的时间。相关和回归被用来评估久坐行为，活动强度和PAL作为因变量的措施之间的关系。
结果
久坐时间与PAL呈负相关（r =-0.33，P < 0.01），活动时间与PAL呈正相关（r = 0.31，P < 0.01）。在多元回归分析中，久坐和轻度活动的时间与PAL显著相关。在MVPA上花费的时间与PAL无关;在该样本中，MVPA的参与有限（中位数：3%的清醒时间;范围：0-14%）。PAL在男孩中明显高于女孩。
结论
在这个样本和设置中，PAL不受MVPA参与的影响，但受久坐和轻度活动时间的影响。这项研究表明，在幼儿中，MVPA对自由生活的TEE和PAL的贡献很小。
BACKGROUND
Strategies for the prevention and treatment of childhood obesity require a better understanding of the relation between the pattern of free-living physical activity and total energy expenditure (TEE).
OBJECTIVE
We assessed the relations between TEE and physical activity level (PAL) during engagement in different intensities of physical activity.
DESIGN
We used a cross-sectional study of 104 children (median age: 5.4 y) in Scotland. TEE was measured with use of doubly labeled water (DLW), and resting energy expenditure was predicted to determine PAL. Time spent sedentary and in light-intensity activity and in moderate- and vigorous-intensity physical activity (MVPA) was assessed by accelerometry concurrent with DLW measurements. Correlation and regression were used to assess the relations between measures of sedentary behavior, intensities of activity, and PAL as the dependent variable.
RESULTS
Time spent sedentary was negatively correlated with PAL (r = -0.33, P < 0.01), and time spent in light-intensity activity was positively correlated with PAL (r = 0.31, P < 0.01). In multiple regression analyses, both time spent sedentary and in light-intensity activities were significantly associated with PAL. Time spent in MVPA was not associated with PAL; engagement in MVPA was limited in this sample (median: 3% of waking hours; range: 0-14%). PAL was significantly higher in boys than in girls.
CONCLUSION
In this sample and setting, PAL was not influenced by engagement in MVPA but was influenced by time spent sedentary and in light-intensity activities. This study suggests that in young children, MVPA could make only a minor contribution to free-living TEE and PAL.
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影响因子：
--
作者：
Epstein, LH;Paluch, RA;Dorn, J
通讯作者：
Dorn, J
影响因子：
--
作者：
SCHOELLER, DA;RAVUSSIN, E;JEQUIER, E
通讯作者：
JEQUIER, E
影响因子：
--
作者：
Gortmaker, SL;Peterson, K;Laird, N
通讯作者：
Laird, N
影响因子：
120.7
作者：
Robinson, TN
通讯作者：
Robinson, TN