Strickland S S, Ulijaszek S J
Centre for Human Nutrition, London School of Hygiene and Tropical Medicine, UK.
Eur J Clin Nutr. 1993 Jan;47(1):9-19.
Classifications of adult low energy nutritional status based on the Quetelet or body mass index (weight/height2) have often assumed independence of age and sex. This paper reports findings of a study of 447 men and 564 women aged over 18 years and belonging to the Iban tribe of central Sarawak, East Malaysia. BMI and fat-free mass fell markedly in both sexes, and fat mass in women but not men, after about 40 years of age. In men over age 40, and women aged 18-40, BMI was sensitive to reported morbidity. For subjects aged over 40 years, BMI was related to morbidity independently of age effects in men, and to age alone in women. These findings suggest that the functional significance of low BMI differs between the sexes and with age.
基于奎特利指数或体重指数（体重/身高²）的成人低能量营养状况分类通常假定年龄和性别相互独立。本文报告了一项针对447名男性和564名女性的研究结果，这些人年龄均超过18岁，属于东马来西亚砂拉越中部的伊班部落。40岁左右后，男女的体重指数（BMI）和去脂体重均显著下降，女性的脂肪量下降，而男性未出现这种情况。40岁以上的男性以及18至40岁的女性中，BMI对所报告的发病率较为敏感。对于40岁以上的受试者，男性中BMI与发病率的关系独立于年龄影响，而女性中则仅与年龄有关。这些发现表明，低BMI的功能意义在性别和年龄之间存在差异。
