Wells J C K, Davies Peter S W
Infant and Child Nutrition Group, Dunn Nutrition Unit, Cambridge CB4 1XJ, United Kingdom.
Department of Biological Anthropology, University of Cambridge, Cambridge CB2 3DZ, United Kingdom.
Am J Hum Biol. 1995;7(1):85-92. doi: 10.1002/ajhb.1310070111.
The energy cost of physical activity has long remained the component of energy expenditure most difficult to quantify. Measurement of total energy expenditure (TEE) in free-living infants by the doubly-labelled water method permits a new approach. The energy cost of activity was estimated in 12 week infants as the difference between TEE and the sum of minimal metabolic rate, the energy cost of tissue synthesis, and thermogenesis. No differences were found between the sexes or between breast-fed and formula-fed infants. However, the cost of activity was substantially higher than previously assumed. The approach is more suitable for use with groups rather than individuals. © 1995 Wiley-Liss, Inc.
长期以来，身体活动的能量消耗一直是最难量化的能量支出组成部分。采用双标记水法对自由活动婴儿的总能量消耗（TEE）进行测量，提供了一种新方法。通过将TEE与最低代谢率、组织合成的能量消耗以及产热之和的差值，估算了12周龄婴儿的活动能量消耗。未发现性别之间以及母乳喂养和配方奶喂养婴儿之间存在差异。然而，活动消耗的能量比之前设想的要高得多。该方法更适合用于群体而非个体。© 1995威利 - 利斯公司。
