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健康老年女性的能量平衡

Energy balance in healthy elderly women.

作者信息

Reilly J J, Lord A, Bunker V W, Prentice A M, Coward W A, Thomas A J, Briggs R S

机构信息

University Geriatric Medicine Group, Southampton General Hospital.

出版信息

Br J Nutr. 1993 Jan;69(1):21-7. doi: 10.1079/bjn19930005.

DOI:10.1079/bjn19930005
PMID:8457528
Abstract

There is a paucity of data on which to base estimates of the energy requirements of the elderly. In general, ageing appears to be associated with a reduction in energy requirement arising from a reduction in physical activity and loss of fat-free mass. The aim of the present study was to measure the total energy expenditure (TEE), basal metabolic rate (BMR), and energy expended on physical activity (calculated as TEE-BMR) in a group of healthy elderly women living in the community in Southampton. Mean rates of TEE (9.21 (SD 1.48) MJ/d) and energy expended on physical activity (4.12 (SD 1.19) MJ/d) were higher than those observed in some studies of younger adults in the UK, and higher than the factors used to estimate the average energy requirement for the elderly. The results suggest that an age-related reduction in energy requirement is not inevitable and support the hypothesis that the effects of ageing on physical activity, body composition, and hence energy requirements, are variable.

摘要

目前缺乏足够的数据来估算老年人的能量需求。一般来说，衰老似乎与能量需求的减少有关，这是由于身体活动减少和去脂体重的丧失所致。本研究的目的是测量南安普敦社区中一组健康老年女性的总能量消耗（TEE）、基础代谢率（BMR）以及身体活动所消耗的能量（计算为TEE - BMR）。TEE的平均速率（9.21（标准差1.48）MJ/天）和身体活动所消耗的能量（4.12（标准差1.19）MJ/天）高于英国一些针对年轻人的研究中观察到的数值，也高于用于估算老年人平均能量需求的系数。结果表明，与年龄相关的能量需求减少并非不可避免，并支持这样一种假设，即衰老对身体活动、身体成分以及能量需求的影响是可变的。