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Relationships between body composition, muscular strength, and bone mineral density in estrogen-deficient postmenopausal women.
J Clin Densitom. 2009 Jul-Sep; 12(3):292-8.JC

Abstract

The purpose of this study was to examine relationships between muscular strength, body composition, and bone mineral density (BMD) in untrained postmenopausal women who are not on hormone replacement therapy (HRT). Fifty-five women (age: 63.3+/-0.6yr) completed menstrual history, physical activity, and calcium intake questionnaires. Total and regional body composition and total body, anteroposterior lumbar spine, nondominant forearm, and right proximal femur BMD were measured using dual-energy X-ray absorptiometry (DXA) (GE Lunar Prodigy, Prodigy enCORE software version 10.50.086, Madison, WI). Participants performed strength tests for 3 upper body and 5 lower body resistance exercises. Women with a relative skeletal muscle mass index (RSMI) value less than 5.45 kg/m(2) were defined as a sarcopenia group (SAR). SAR had significantly (p < 0.05) lower total body and forearm BMD compared with those who were not sarcopenic. BMD sites were significantly correlated with upper body strength (UBS) and lower body strength (LBS) (r = 0.28-0.50, p < 0.01), with the strength of relationship being site specific. Strength and fat mass (FM) significantly predicted total body BMD (R(2) = 0.232-0.241, p < 0.05), FM variables predicted spine BMD (R(2) = 0.109-0.140, p < 0.05), and LBS and RSMI predicted hip BMD sites (R(2) = 0.073-0.237, p < 0.05). Body composition variables failed to significantly predict LBS. In conclusion, the contribution of body composition and strength variables to BMD varied by site as FM was more important for total body, forearm and spine BMD, and LBS exerted greater influence on the hip sites.

Authors+Show Affiliations

Department of Health and Exercise Science, University of Oklahoma, 1401 Asp Avenue, Norman, OK 73019, USA.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19155180

Citation

Sherk, Vanessa D., et al. "Relationships Between Body Composition, Muscular Strength, and Bone Mineral Density in Estrogen-deficient Postmenopausal Women." Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry, vol. 12, no. 3, 2009, pp. 292-8.
Sherk VD, Palmer IJ, Bemben MG, et al. Relationships between body composition, muscular strength, and bone mineral density in estrogen-deficient postmenopausal women. J Clin Densitom. 2009;12(3):292-8.
Sherk, V. D., Palmer, I. J., Bemben, M. G., & Bemben, D. A. (2009). Relationships between body composition, muscular strength, and bone mineral density in estrogen-deficient postmenopausal women. Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry, 12(3), 292-8. https://doi.org/10.1016/j.jocd.2008.12.002
Sherk VD, et al. Relationships Between Body Composition, Muscular Strength, and Bone Mineral Density in Estrogen-deficient Postmenopausal Women. J Clin Densitom. 2009 Jul-Sep;12(3):292-8. PubMed PMID: 19155180.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Relationships between body composition, muscular strength, and bone mineral density in estrogen-deficient postmenopausal women. AU - Sherk,Vanessa D, AU - Palmer,Ian J, AU - Bemben,Michael G, AU - Bemben,Debra A, Y1 - 2009/01/19/ PY - 2008/09/24/received PY - 2008/12/07/revised PY - 2008/12/07/accepted PY - 2009/1/22/entrez PY - 2009/1/22/pubmed PY - 2009/10/30/medline SP - 292 EP - 8 JF - Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry JO - J Clin Densitom VL - 12 IS - 3 N2 - The purpose of this study was to examine relationships between muscular strength, body composition, and bone mineral density (BMD) in untrained postmenopausal women who are not on hormone replacement therapy (HRT). Fifty-five women (age: 63.3+/-0.6yr) completed menstrual history, physical activity, and calcium intake questionnaires. Total and regional body composition and total body, anteroposterior lumbar spine, nondominant forearm, and right proximal femur BMD were measured using dual-energy X-ray absorptiometry (DXA) (GE Lunar Prodigy, Prodigy enCORE software version 10.50.086, Madison, WI). Participants performed strength tests for 3 upper body and 5 lower body resistance exercises. Women with a relative skeletal muscle mass index (RSMI) value less than 5.45 kg/m(2) were defined as a sarcopenia group (SAR). SAR had significantly (p < 0.05) lower total body and forearm BMD compared with those who were not sarcopenic. BMD sites were significantly correlated with upper body strength (UBS) and lower body strength (LBS) (r = 0.28-0.50, p < 0.01), with the strength of relationship being site specific. Strength and fat mass (FM) significantly predicted total body BMD (R(2) = 0.232-0.241, p < 0.05), FM variables predicted spine BMD (R(2) = 0.109-0.140, p < 0.05), and LBS and RSMI predicted hip BMD sites (R(2) = 0.073-0.237, p < 0.05). Body composition variables failed to significantly predict LBS. In conclusion, the contribution of body composition and strength variables to BMD varied by site as FM was more important for total body, forearm and spine BMD, and LBS exerted greater influence on the hip sites. SN - 1094-6950 UR - https://www.unboundmedicine.com/medline/citation/19155180/Relationships_between_body_composition_muscular_strength_and_bone_mineral_density_in_estrogen_deficient_postmenopausal_women_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1094-6950(08)00509-X DB - PRIME DP - Unbound Medicine ER -