Body Composition and Muscle Strength as Determinants of Racial Difference in Bone Mineral Density

The purpose of this study was to determine the contribution of body composition and muscle strength to racial differences in bone mineral density (BMD) in chronically active older adults. Participants were 49 men and 56 women grouped according to self-selected race (Black, Asian, or White). BMD, bod...

Full description

Saved in:
Bibliographic Details
Published in:Journal of aging and physical activity 2001-04, Vol.9 (2), p.213-222
Main Authors: Jung, Youn Soo, Hawkins, Steven A., Wiswell, Robert A.
Format: Article
Language:English
Subjects:
Age differences
Body composition
Body mass
Bone density
Bone mineral density
Lower limbs
Muscle strength
Older people
Race
Racial differences
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The purpose of this study was to determine the contribution of body composition and muscle strength to racial differences in bone mineral density (BMD) in chronically active older adults. Participants were 49 men and 56 women grouped according to self-selected race (Black, Asian, or White). BMD, body composition, and knee strength were measured. Asian men had significantly lower body mass, strength, and BMD than White and Black men did ( p < .05). Asian and White women had significantly lower body mass and BMD than Black women did ( p < .05), with few strength differences between groups. When lean mass was controlled by ANCOVA. racial differences in BMD disappeared for all bone sites in both sexes. Controlling for body mass eliminated most racial differences in BMD. Controlling for strength did not alter racial differences in BMD for either sex. These results suggest that racial differences in BMD might in part result from differences in lean mass.
ISSN:1063-8652
1543-267X
DOI:10.1123/japa.9.2.213