女子高校生のビタミンD摂取状況と骨塩量への影響

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It has recently been emphasized that increasing peak bone mass during the human growth period is important in preventing osteoporosis. Exercise and nutrition are two major environmental factors which determine the peak bone mass acquired during growth. In this study, we investigated the vitamine D intake of 466 female senior high school students on the purpose of assessing the influence of vitamin D and other nutritional intake on peak bone mass. The average daily calcium intake by these females was low (497.2±230.6 mg). Only 30.0 % of the subjects satisfied the minimum daily calcium requirement for adults (600 mg). The daily vitamin D intake was equal to or greater than the minimum daily requirement for adults in 60.7 % of all subjects. However, daily vitamin D intake showed a bi-model distribution, with peaks in both the high and low ends of the range. Thus, daily vitamine D intake varied greatly among individual subjects. Lumbar vertebral bone mass was not correlated with daily calcium intake but was significantly correlated with vitamin D intake (r=0.484). The ratio between vitamin D intake and calcium intake was significantly positively correlated with lumbar vertebral bone mass (r=0.550). This means that high vitamin D intake has a favorable effect on lumbar vertebral bone mass even if calcium intake is low. When the effects of vitamin D intake on lumbar vertebral bone mass were analyzed in subjects divided into three groups according to their calcium intake, the effects of higher vitamine D intake in increasing bone mass became more marked as the calcium intake decreased. These findings suggest that vitamin D intake is a very important factor in terms the peak bone mass in female senior high school students, whose calcium intake is often relatively low.
日本ビタミン学会の論文
1996-07-25

女子高校生のビタミンD摂取状況と骨塩量への影響

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