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Relationship of body composition, muscle strength, and aerobic capacity to bone mineral density in older men and women.
J Bone Miner Res. 1989 Jun; 4(3):421-32.JB

Abstract

We evaluated the relationship of body composition, maximal aerobic capacity (VO2max), and muscle strength to bone mineral density in 91 healthy men and women, age 61-84 years. Lean body mass was estimated from two independent measures of fat mass, bioelectrical impedance and skinfold thickness. VO2max was determined by treadmill ergometry with direct measurement of oxygen consumption. Grip and back strength were measured by isometric dynamometry. Mineral density of lumbar spine and midradius were measured by dual- and single-photon absorptiometry. Men had significantly greater lean mass, muscle strength, aerobic capacity, and bone density than women. In women, grip strength correlated with forearm and spine density (r = 0.37, r = 0.28, p less than 0.05). In men, grip strength correlated with forearm density (r = 0.47, p less than 0.05), and back strength was significantly correlated with both spine (r = 0.46, p less than 0.01) and forearm density (r = 0.46, p less than 0.01). In women, neither forearm nor spine density correlated significantly with aerobic capacity. In men, midradius density did not correlate significantly with oxygen consumption, but the simple correlation between spine density and VO2max was significant (r = 0.41, p less than 0.05). Back strength and VO2max were significantly related in men (r = 0.47, p less than 0.01). By stepwise multiple regression, back strength emerged as the most robust predictor of spine mineral, accounting for 19% of the variation in bone density. Addition of VO2max to the regression did not add significant predictive value. However, when VO2max was expressed per kilogram lean body mass, both back strength and VO2max contributed significantly to the prediction of spine density in men, and the coefficient of determination R2 increased to 0.30. We conclude that body mass and grip strength, but not aerobic capacity, significantly predict bone density in elderly women. In elderly men, back strength is a more robust predictor of axial bone density than traditional expressions of aerobic capacity, but VO2max per kilogram lean mass and back strength both make significant contributions to the prediction of spine mineral density. The applicability of these results to younger men and women is uncertain.

Authors+Show Affiliations

Aging Study Unit, VA Medical Center, Palo Alto, CA 94304.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

2763878

Citation

Bevier, W C., et al. "Relationship of Body Composition, Muscle Strength, and Aerobic Capacity to Bone Mineral Density in Older Men and Women." Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research, vol. 4, no. 3, 1989, pp. 421-32.
Bevier WC, Wiswell RA, Pyka G, et al. Relationship of body composition, muscle strength, and aerobic capacity to bone mineral density in older men and women. J Bone Miner Res. 1989;4(3):421-32.
Bevier, W. C., Wiswell, R. A., Pyka, G., Kozak, K. C., Newhall, K. M., & Marcus, R. (1989). Relationship of body composition, muscle strength, and aerobic capacity to bone mineral density in older men and women. Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research, 4(3), 421-32.
Bevier WC, et al. Relationship of Body Composition, Muscle Strength, and Aerobic Capacity to Bone Mineral Density in Older Men and Women. J Bone Miner Res. 1989;4(3):421-32. PubMed PMID: 2763878.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Relationship of body composition, muscle strength, and aerobic capacity to bone mineral density in older men and women. AU - Bevier,W C, AU - Wiswell,R A, AU - Pyka,G, AU - Kozak,K C, AU - Newhall,K M, AU - Marcus,R, PY - 1989/6/1/pubmed PY - 1989/6/1/medline PY - 1989/6/1/entrez SP - 421 EP - 32 JF - Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research JO - J Bone Miner Res VL - 4 IS - 3 N2 - We evaluated the relationship of body composition, maximal aerobic capacity (VO2max), and muscle strength to bone mineral density in 91 healthy men and women, age 61-84 years. Lean body mass was estimated from two independent measures of fat mass, bioelectrical impedance and skinfold thickness. VO2max was determined by treadmill ergometry with direct measurement of oxygen consumption. Grip and back strength were measured by isometric dynamometry. Mineral density of lumbar spine and midradius were measured by dual- and single-photon absorptiometry. Men had significantly greater lean mass, muscle strength, aerobic capacity, and bone density than women. In women, grip strength correlated with forearm and spine density (r = 0.37, r = 0.28, p less than 0.05). In men, grip strength correlated with forearm density (r = 0.47, p less than 0.05), and back strength was significantly correlated with both spine (r = 0.46, p less than 0.01) and forearm density (r = 0.46, p less than 0.01). In women, neither forearm nor spine density correlated significantly with aerobic capacity. In men, midradius density did not correlate significantly with oxygen consumption, but the simple correlation between spine density and VO2max was significant (r = 0.41, p less than 0.05). Back strength and VO2max were significantly related in men (r = 0.47, p less than 0.01). By stepwise multiple regression, back strength emerged as the most robust predictor of spine mineral, accounting for 19% of the variation in bone density. Addition of VO2max to the regression did not add significant predictive value. However, when VO2max was expressed per kilogram lean body mass, both back strength and VO2max contributed significantly to the prediction of spine density in men, and the coefficient of determination R2 increased to 0.30. We conclude that body mass and grip strength, but not aerobic capacity, significantly predict bone density in elderly women. In elderly men, back strength is a more robust predictor of axial bone density than traditional expressions of aerobic capacity, but VO2max per kilogram lean mass and back strength both make significant contributions to the prediction of spine mineral density. The applicability of these results to younger men and women is uncertain. SN - 0884-0431 UR - https://www.unboundmedicine.com/medline/citation/2763878/Relationship_of_body_composition_muscle_strength_and_aerobic_capacity_to_bone_mineral_density_in_older_men_and_women_ L2 - https://doi.org/10.1002/jbmr.5650040318 DB - PRIME DP - Unbound Medicine ER -