青年女性の体骨塩量がBODY MASS INDEXに及ぼす影響

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This study was conducted to find how the ratio of bone mineral content to body weight (%BMC) influences body mass index (BMI). The subjects were 52 female students (ages 19-24) with BMI between 16.2 - 31.2kg/m^2. Dual energy x-ray absorptiometry was used to measure their body composition and bone mineral density. Height was 158.7±3.5cm, weight was 55.8±9.3kg, BMI was 22.0±34kg/m^2, %BMC was 4.4±0.5% and the ratio of bone mineral content to fat-free mass (%BMC/FFM) was 6.2±0.4%. Bone mineral density was 0.828±0.078g/cm^2 in the arms, 1.182±0.112g/cm^2 in the legs, 0.918±0.078g/cm^2 in the trunk and 1.153±0.086g/cm^2 in the entire body. Body weight and BMI were found to have a significant interrelation with the bone mineral densities of the trunk and the entire body, respectively. The amount of body fat was found to have a significant interrelation with the bone mineral density of the trunk. Bone mineral content and %BMC/FFM were found to have significant interrelations with the bone mineral densities (arms, legs, trunk and entire body). There was a large negative interrelation between BMI and %BMC (r=-0.619). In other words, the heavier the subjects were the lower the %BMC was. There was a positive interrelation between BMI and %BMC/FFM (r=0.456). In other words, the thinner the subjects were the lower the %BMC/FFM was. These results indicate that BMI is a valid estimate of %BMC measured with dual energy x-ray absorptiometry.
日本運動生理学会の論文
2001-02-26

青年女性の体骨塩量がBODY MASS INDEXに及ぼす影響

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