Muscular strength measurements indicate bone mineral density loss in postmenopausal women

Zhixiong Zhou,1,2 Lu Zheng,3 Dengyun Wei,4 Ming Ye,3 Xun Li2 1School of Physical Education and Coaching Science, Capital University of Physical Education and Sports, Beijing, People’s Republic of China; 2Graduate School, Beijing Sport University, Beijing, People’s Republic of Chi...

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Autores principales:	Zhou Z, Zheng L, Wei D, Ye M, Li X
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	osteoporosis fracture bone mineral density post-menopausal menopause muscle strength isokinetic isometric Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/a969a80eee754991b693cc0f32e30f35
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spelling	oai:doaj.org-article:a969a80eee754991b693cc0f32e30f352021-12-02T04:23:40ZMuscular strength measurements indicate bone mineral density loss in postmenopausal women1178-1998https://doaj.org/article/a969a80eee754991b693cc0f32e30f352013-10-01T00:00:00Zhttps://www.dovepress.com/muscular-strength-measurements-indicate-bone-mineral-density-loss-in-p-peer-reviewed-article-CIAhttps://doaj.org/toc/1178-1998Zhixiong Zhou,1,2 Lu Zheng,3 Dengyun Wei,4 Ming Ye,3 Xun Li2 1School of Physical Education and Coaching Science, Capital University of Physical Education and Sports, Beijing, People’s Republic of China; 2Graduate School, Beijing Sport University, Beijing, People’s Republic of China; 3School of Kinesiology and Health Education, Capital University of Physical Education and Sports, Beijing, People’s Republic of China; 4Department of Physical Education, Anhui Normal University, Anhui, People’s Republic of China Background: The literature is inconsistent and inconclusive on the relationship between bone mineral density (BMD) and muscular strength in postmenopausal women. Objective: To evaluate the relationship between isokinetically and isometrically determined muscle strength and BMD in postmenopausal women of different age groups. Methods: Healthy postmenopausal women (n = 293; mean age, 54.22 ± 3.85 years) were enrolled in this study. They were grouped by age according to World Health Organization life expectancy: 45–50 years, 51–53 years, 54–56 years, 57–59 years, and 60–64 years. Total BMD, L2–4 BMD, and femoral neck BMD were measured by dual-energy X-ray bone densitometry; isokinetic and isometric muscle strength of the right hip and trunk muscles were measured during contractile exercise. Stepwise regression analysis was used to examine the relationships between BMD and strength measures, controlling for subject age and years since menopause. Results: Results of stepwise regression showed that hip extensor and flexor strength at 120°/second and back extend strength at 30°/second accounted for 26% total BMD variance among menopausal subjects, 19% L2–4 BMD variance, and 15% femoral neck BMD variance; in postmenopausal women of different age groups, hip extensor and flexor strength at 120°/second and back extend strength at 30°/second accounted for 25%–35% total BMD variance. Conclusion: Different optimal strength measurements were identified for different age groups. Age-appropriate testing mode can improve detection of osteoporotic fracture risk in early menopause by determining muscular strength reduction related to BMD loss. This may enable early initiation of preventative therapies. Keywords: osteoporosis, fracture, bone mineral density, postmenopausal, menopause, muscle strength, isokinetic, isometricZhou ZZheng LWei DYe MLi XDove Medical Pressarticleosteoporosisfracturebone mineral densitypost-menopausalmenopausemuscle strengthisokineticisometricGeriatricsRC952-954.6ENClinical Interventions in Aging, Vol Volume 8, Pp 1451-1459 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	osteoporosis fracture bone mineral density post-menopausal menopause muscle strength isokinetic isometric Geriatrics RC952-954.6
spellingShingle	osteoporosis fracture bone mineral density post-menopausal menopause muscle strength isokinetic isometric Geriatrics RC952-954.6 Zhou Z Zheng L Wei D Ye M Li X Muscular strength measurements indicate bone mineral density loss in postmenopausal women
description	Zhixiong Zhou,1,2 Lu Zheng,3 Dengyun Wei,4 Ming Ye,3 Xun Li2 1School of Physical Education and Coaching Science, Capital University of Physical Education and Sports, Beijing, People’s Republic of China; 2Graduate School, Beijing Sport University, Beijing, People’s Republic of China; 3School of Kinesiology and Health Education, Capital University of Physical Education and Sports, Beijing, People’s Republic of China; 4Department of Physical Education, Anhui Normal University, Anhui, People’s Republic of China Background: The literature is inconsistent and inconclusive on the relationship between bone mineral density (BMD) and muscular strength in postmenopausal women. Objective: To evaluate the relationship between isokinetically and isometrically determined muscle strength and BMD in postmenopausal women of different age groups. Methods: Healthy postmenopausal women (n = 293; mean age, 54.22 ± 3.85 years) were enrolled in this study. They were grouped by age according to World Health Organization life expectancy: 45–50 years, 51–53 years, 54–56 years, 57–59 years, and 60–64 years. Total BMD, L2–4 BMD, and femoral neck BMD were measured by dual-energy X-ray bone densitometry; isokinetic and isometric muscle strength of the right hip and trunk muscles were measured during contractile exercise. Stepwise regression analysis was used to examine the relationships between BMD and strength measures, controlling for subject age and years since menopause. Results: Results of stepwise regression showed that hip extensor and flexor strength at 120°/second and back extend strength at 30°/second accounted for 26% total BMD variance among menopausal subjects, 19% L2–4 BMD variance, and 15% femoral neck BMD variance; in postmenopausal women of different age groups, hip extensor and flexor strength at 120°/second and back extend strength at 30°/second accounted for 25%–35% total BMD variance. Conclusion: Different optimal strength measurements were identified for different age groups. Age-appropriate testing mode can improve detection of osteoporotic fracture risk in early menopause by determining muscular strength reduction related to BMD loss. This may enable early initiation of preventative therapies. Keywords: osteoporosis, fracture, bone mineral density, postmenopausal, menopause, muscle strength, isokinetic, isometric
format	article
author	Zhou Z Zheng L Wei D Ye M Li X
author_facet	Zhou Z Zheng L Wei D Ye M Li X
author_sort	Zhou Z
title	Muscular strength measurements indicate bone mineral density loss in postmenopausal women
title_short	Muscular strength measurements indicate bone mineral density loss in postmenopausal women
title_full	Muscular strength measurements indicate bone mineral density loss in postmenopausal women
title_fullStr	Muscular strength measurements indicate bone mineral density loss in postmenopausal women
title_full_unstemmed	Muscular strength measurements indicate bone mineral density loss in postmenopausal women
title_sort	muscular strength measurements indicate bone mineral density loss in postmenopausal women
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/a969a80eee754991b693cc0f32e30f35
work_keys_str_mv	AT zhouz muscularstrengthmeasurementsindicatebonemineraldensitylossinpostmenopausalwomen AT zhengl muscularstrengthmeasurementsindicatebonemineraldensitylossinpostmenopausalwomen AT weid muscularstrengthmeasurementsindicatebonemineraldensitylossinpostmenopausalwomen AT yem muscularstrengthmeasurementsindicatebonemineraldensitylossinpostmenopausalwomen AT lix muscularstrengthmeasurementsindicatebonemineraldensitylossinpostmenopausalwomen
_version_	1718401265231200256

Muscular strength measurements indicate bone mineral density loss in postmenopausal women

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