| Relation of physical activity and calcium intake to bone mineral density in perimenopausal women. |
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Tae Heum Jeong, Mun Chan Kim, Yeong Il Kim, Dae Joon Jeon, Seoung Oh Yang, Su Youn Ham |
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Osteoporosis Research Group, Ulsan University Hospital, College of Medicine, University of Ulsan. |
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| Abstract |
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BACKGROUND: Physical activity and calcium nutriture with reproductive endocrine status are primary controller of bone remodelling activity. There are differences in impact of exercise on early menopausal bone ; late menopausal bone.
There are possibility of different effect of calcium intake on bone mass among different life stage. The aim of this study was to elucidate whether the relation between lifestyle and bone mineral density varied with life stages.
METHODS: We examined bone mineral density and took questionnaires related to lifestyle of 1,698 women aged 49~54 years old who lived in ulsan from July 1999 to Dec.
1999. We selected 731 healthy subjects without medical conditions or lifestyle factors known to affect bone metabolism.
RESULTS: In 6~10 years postmenopausal women, those with calcium intake of more than 600 or 800mg /day showed significantly greater BMD. In postmenopausal women , those daily consumption of milk showed greater BMD. But it is not significantly. In premenopausal women with regular menstruation, those who took regular exercise showed significantly greater BMD than those who did not. Working hours is not related with BMD.
CONCLUSIONS: Our study showed that the relation between calcium intake or physical activity and BMD differed with life stages. It was suggested that life stages should be taken into consideration to perform lifestyle modifications for the prevention and management of osteoporosis. |
| Key Words:
BMD; calcium intake; physical activity; menopause; years since menopause |
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