여성의 하지 근 횡단면적과 과거 직업 및 운동실천의 관계
The effects of life-style on muscle mass of the woman lower limbs
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The purpose of the present study was to investigate the effects of life-style on muscle mass of the woman lower limbs. As test subjects, 71 females at the age ranging from 20 to 82 were used. The subjects were grouped by age intervals of 10 years. The cross-sectional area(CSA) of muscular Psoas major and femoral muscle(extensor) was measured in the subjects using magnetic resonance imaging(MRI). The questionnaire responded a life-style form composed of bygone job, activities and experience of exercise. As a result of study, the CSA of Psoas major showed a significantly lower value from 55's(17.2±3.4㎠, 20's yer vs. 12.5±2.7㎠, p<.01), from 45's in the extensor (54.3±3.3㎠, 20's yer vs. 45.5±2.9㎠, p<.05). Many of the elderly subjects showing a higher value than the average one were engaged in agriculture by occupation containing high-intensity quick anaerobic actions though not having their exercising habit at all. These results indicate the importance of high-intensity quick actions such as resistance training to prevent the cross-sectional Psoas major area from diminishing with aging.
Abstract
The purpose of the present study was to investigate the effects of life-style on muscle mass of the woman lower limbs. As test subjects, 71 females at the age ranging from 20 to 82 were used. The subjects were grouped by age intervals of 10 years. The cross-sectional area(CSA) of muscular Psoas major and femoral muscle(extensor) was measured in the subjects using magnetic resonance imaging(MRI). The questionnaire responded a life-style form composed of bygone job, activities and experience of exercise. As a result of study, the CSA of Psoas major showed a significantly lower value from 55's(17.2±3.4㎠, 20's yer vs. 12.5±2.7㎠, p<.01), from 45's in the extensor (54.3±3.3㎠, 20's yer vs. 45.5±2.9㎠, p<.05). Many of the elderly subjects showing a higher value than the average one were engaged in agriculture by occupation containing high-intensity quick anaerobic actions though not having their exercising habit at all. These results indicate the importance of high-intensity quick actions such as resistance training to prevent the cross-sectional Psoas major area from diminishing with aging.
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