Change in Cross-Sectional Areas of Thigh Muscles of Healthy Subjects with Aging.
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概要
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Cross-sectional areas of muscle components of thigh were measured in 95 healthy subjects using a CT-Scanner in order to examine muscle atrophy with aging. The subjects were divided into three groups; young, middle-aged, and elderly. There was no difference in every absolute value of muscle components between the right and left thighs. The absolute values of all muscle components were significantly larger in male than in female. Cross-sectional areas of thigh muscles were considered dependent on physical frame of each subject, and cross-sectional area of femur, which is highly correlated with body weight (r=0.527, p<0.001), was measured to obtain the ratio of cross-sectional area of muscle component to that of femur. It was concluded that marked atrophy was revealed in quadriceps muscle of thigh with increasing ages.
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