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Muscle strength and areal bone mineral density at the hip in women: a cross-sectional study

Pasco, Julie A., Holloway, Kara L., Brennan-Olsen, Sharon L., Moloney, David J. and Kotowicz, Mark A. 2015, Muscle strength and areal bone mineral density at the hip in women: a cross-sectional study, BMC musculoskeletal disorders, vol. 16, Article Number : 124, pp. 1-6, doi: 10.1186/s12891-015-0586-2.

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Title Muscle strength and areal bone mineral density at the hip in women: a cross-sectional study
Author(s) Pasco, Julie A.ORCID iD for Pasco, Julie A. orcid.org/0000-0002-8968-4714
Holloway, Kara L.ORCID iD for Holloway, Kara L. orcid.org/0000-0001-5064-2990
Brennan-Olsen, Sharon L.ORCID iD for Brennan-Olsen, Sharon L. orcid.org/0000-0003-3269-5401
Moloney, David J.
Kotowicz, Mark A.ORCID iD for Kotowicz, Mark A. orcid.org/0000-0002-8094-1411
Journal name BMC musculoskeletal disorders
Volume number 16
Season Article Number : 124
Start page 1
End page 6
Total pages 6
Publisher BioMed Central
Place of publication London, Eng.
Publication date 2015
ISSN 1471-2474
Keyword(s) body composition
bone mineral density
lean mass
muscle strength
women
Summary BACKGROUND: Muscle strengthening exercises are promoted for building and maintaining a healthy skeleton. We aimed to investigate the relationship between muscle strength and areal bone mineral density (BMD) at the hip in women aged 26-97 years.

METHODS: This cross-sectional study utilises data from 863 women assessed for the Geelong Osteoporosis Study. Measures of hip flexor and abductor strength were made using a hand-held dynamometer (Nicholas Manual Muscle Tester). The maximal measure from three trials on each leg was used for analyses. BMD was measured at the hip using dual energy x-ray absorptiometry (DXA; Lunar DPX-L). Total lean mass, body fat mass and appendicular lean mass were determined from whole body DXA scans. Linear regression techniques were used with muscle strength as the independent variable and BMD as the dependent variable. Models were adjusted for age and indices of body composition.

RESULTS: Measures of age-adjusted hip flexor strength and hip abductor strength were positively associated with total hip BMD. For each standard deviation (SD) increase in hip flexor strength, the increase in mean total hip BMD (SD) was 10.4 % (p = 0.009). A similar pattern was observed for hip abductor strength, with an increase in mean total hip BMD of 22.8 % (p = 0.025). All associations between hip muscle strength and total hip BMD were independent of height, but were nullified after adjusting for appendicular lean mass or total lean mass.

CONCLUSIONS: There was a positive association observed between muscle strength and BMD at the hip. However, this association was explained by measures of lean mass.
Language eng
DOI 10.1186/s12891-015-0586-2
Field of Research 110314 Orthopaedics
Socio Economic Objective 920507 Women's Health
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074341

Document type: Journal Article
Collections: Faculty of Health
School of Medicine
Open Access Collection
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.