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KMID : 1134819970260030480
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Journal of the Korean Society of Food Science and Nutrition
1997 Volume.26 No. 3 p.480 ~ p.487
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Effect of Dietary Calcium Levels on Peak Bone Mass Formation in Growing Female Rats
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Lee Yeon-Sook
Park Mi-Na
Kim Eun-Mi
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Abstract
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The present study was designed to examine how Ca intake contributes to the increase of peak bone mass with growing female rats. Weaned rats were fed experimental diets consisting in five levels of Ca; very low(0.1%), low(0.2%), moderate(0.5%), high(1.0%) and very high(1.5%) for 4, 8 and 12 weeks. Bone growth, metabolism and Ca metabolism were determined. As for the rats fed for 4 weeks, the bone weight, length and breaking force and bone metabolism were not significantly affected by dietary Ca levels, whereas the current intakes of Ca were observed to have significantly affected the rats fed for 8 or 12 weeks with regard to the bone weight, length and breaking force and bone metabolism. The bone ash and Ca contents of the rats were affected by dietary Ca levels for the total period of feeding. It is suggested that dietary Ca itself affected the mineralization process either during the growth or later, although the resulting hone mass is not a linear function of dietary Ca content.
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KEYWORD
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calcium intake, peak bone mass, bone metabolism
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