从婴儿期到成年期的能量需求。

Energy requirements from infancy to adulthood.

作者信息

Butte N F, Moon J K, Wong W W, Hopkinson J M, Smith E O

机构信息

USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.

出版信息

Am J Clin Nutr. 1995 Nov;62(5 Suppl):1047S-1052S. doi: 10.1093/ajcn/62.5.1047S.

DOI:10.1093/ajcn/62.5.1047S

PMID:7484920

Abstract

To investigate how age and body composition affect energy requirements, the sedentary daily expenditure (SDE) and basal metabolic rate (BMR) of 101 infants, 82 girls, and 27 adults were measured. Energy expenditure was scaled for differences in body size to test the effects of age and body fatness. A power function was superior to linear models. For all subjects, WT0.63 (where WT is weight) or FFM0.63 (where FFM is fat-free mass) explained 94% of the variability in BMR, and WT0.70 or FFM0.70 explained 97% of the variability in SDE. The effects of height and fat mass (kg or % body wt) on BMR and SDE scaled for weight or fat-free mass were age dependent. Best-fitted exponents relating BMR or SDE to body size differed between children (0.40-0.52) and infants (1.04-1.30) (P = 0.001). Human energy requirements from infancy to adulthood appear to be a power, not a linear, function of body weight and composition.

摘要

为了研究年龄和身体组成如何影响能量需求，测量了101名婴儿、82名女孩和27名成年人的静息日能量消耗（SDE）和基础代谢率（BMR）。根据身体大小差异对能量消耗进行标化，以测试年龄和体脂率的影响。幂函数优于线性模型。对于所有受试者，体重的0.63次方（WT0.63，其中WT为体重）或去脂体重的0.63次方（FFM0.63，其中FFM为去脂体重）可解释BMR变异性的94%，体重的0.70次方或去脂体重的0.70次方可解释SDE变异性的97%。身高和脂肪量（千克或体重百分比）对根据体重或去脂体重标化的BMR和SDE的影响取决于年龄。儿童（0.40 - 0.52）和婴儿（1.04 - 1.30）中，将BMR或SDE与身体大小相关的最佳拟合指数有所不同（P = 0.001）。从婴儿期到成年期，人类的能量需求似乎是体重和身体组成的幂函数，而非线性函数。