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Korean Journal of Epidemiology 2003;25(2): 108-118.
The Association between Bone Density at Os calcis and Body Composition according to Years since Menopause in Postmenopausal Women Aged 45-84 Years Living in a Rural Area.
Eun Kyung Shin, Ki Suk Kim, Hee Young Kim, Kyung Eui Hong, Hyo Jee Joung, Sung Il Cho
School of Public Health, Seoul National University, Korea.scho@snu.ac.kr
Abstract
OBJECTIVES:
This cross-sectional study aimed to compare early postmenopausal women with late menopausal women in respect to body composition as a major determinant of calcaneal bone density.
METHODS:
Areal bone density was measured at os calcis with peripheral dual energy X-ray absorptiometry. Soft lean mass and fat mass were measured using bioelectric impedance in 109 postmenopausal women aged 45 to 84 years.
RESULTS:
When age and height were adjusted, the variance of calcaneal bone density was better explained by fat mass (15%) than by soft lean mass (7%) in early postmenopausal women. In contrast, soft lean mass (17%) explained the variance of calcaneal bone density better than fat mass (11%) in late postmenopausal women. However, interaction terms between years since menopause (YSM) and soft lean mass or fat mass were not statistically significant in multiple linear regression model for total postmenopausal subject.
CONCLUSION:
The findings of this study suggest that fat mass is the major determinant of calcaneal bone density in early postmenopausal women, whereas fat free mass is more important determinant of calcaneal bone density in late postmenopausal women.
Keywords: Bone density; Calcaneus; Body composition; Postmenopause
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