超音波断層法による身体組成の加齢変化にみられる日米比較

概要

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Using American (Caucasian) and Japanese males, the present study revealed the difference in fat and muscle thickness between them and observed the change in body composition that occur with aging by using B-mode ultrasound measurements. Age of, 153 Japanese males and 107 American males were aged from 20 to 59 years old. Analysis of covarance was applied taking into consideration the influence of height, age, and race. 1. In American males had significantly greater body height and weight than Japanese males. However the WHR (Waist/Hip Ratio) in both groups was found to increase with aging and no significant difference was observed between the two groups in this respect. 2. A striking increase with aging was observed in subcutaneous fat thickness of the trunk in American males, but not in Japanese males. As an increase in WHR was observed with aging in Japanese males it is though possible that fat is accumutated much in the abdominal cavity. 3. Muscle thickness in American males was thicker than that of Japanese males at all sites with a particularly striking difference in the upper arm. A significant decrease in muscle thickness was observed with aging in the chest, abdomen, anterior thigh and posterior calf sites.
日本民族衛生学会の論文