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KMID : 1007320090150010048
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Journal of the Korean Society of Menopause
2009 Volume.15 No. 1 p.48 ~ p.54
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The Importance of Lean Body Mass for Bone Mineral Density in Postmenopausal Women
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Song Jae-Yeon
Song Rok
Cho Hyun-Hee
Kwon Dong-Jin
Lew Young-Ok
Lim Young-Taik
Kim Jang-Heub
Kim Jin-Hong
Kim Mee-Ran
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Abstract
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Objectives: To investigate the importance of lean body mass for bone mineral density (BMD) in postmenopausal women.
Methods: The BMD of the lumbar spine and both femurs was measured with dual-energy X-ray absorptiometry (DXA) in 55 healthy postmenopausal women, ages 50∼77 years. Candidates were selected from a group of patients who visited the menopausal clinic at the Catholic University of Korea. Lean body mass and fat mass were assessed in both arms and legs and in the trunk. The BMD of the lumbar spine and both femur necks and trochanters was measured using DXA.
Results: The mean patients age was 57.19±6.13 (range 50∼77) years, height was 156±5 cm, weight was 57.82±5.80 kg, and body mass index was 23.73±2.42. In postmenopausal women, the percentage of android fat mass (42.84±0.12%) was higher than that of gynoid fat mass (39.57±4.37%). There was a negative correlation between the BMD of both femurs and both android fat mass and total fat mass. The fat mass in the arms, legs, and trunk and the gynoid fat mass showed no significant correlation with BMD. The lean body mass in the legs and trunk had a significant correlation with the BMD of the lumbar spine and femur, although the lean body mass of the arms did not.
Conclusion: These findings suggest that BMD increases as android and total fat mass decrease, and that BMD increases as the lean body mass of the legs and trunk increases.
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KEYWORD
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Bone mineral density, Body composition, Lean body mass
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