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Cited by 20Nutrition and Health in AgingFrailty in Older AdultsBody Composition Measurement Techniques

Muscle strength can better differentiate between gradations of functional performance than muscle quality in healthy 50–70 y women

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Francis, Peter, McCormack, William, Toomey, Clodagh, Lyons, Mark, Jakeman, Philip·2017·Brazilian Journal of Physical Therapy
DOI 10.1016/j.bjpt.2017.06.013PMC PMC5693432
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Abstract

Objective It is not known which laboratory indices of muscle mass, strength or quality can distinguish functional performance in healthy middle aged women. The aim of this study was to (a) examine the association between upper leg lean tissue mass, knee extensor strength, muscle quality (strength per unit lean tissue mass) and functional performance and (b) to determine the utility of tertiles of muscle strength and muscle quality to distinguish gradations of functional capacity in healthy 50-70y women. Methods Using a cross-sectional study design, one hundred and twenty-eight healthy 50-70y women (mean age: 60.4, SD=5.1y) underwent body composition assessment (dual X-ray absorptiometry) and performed maximal voluntary isometric contractions of the knee extensors (Con-Trex Dynamometer). Functional performance was assessed using a 5 repetition and 30s chair rise test and 900m gait speed test. Results Ordered by muscle strength or muscle quality, those in the highest tertile (T1) demonstrated greater functional performance than those in lowest tertile (T3). There was no association between upper leg lean tissue mass and functional performance (r=≤0.06). Muscle strength explained a greater proportion of the variance in all functional performance measures relative to muscle quality (R 2=0.13-0.36 vs. R 2=0.11-0.16). Conclusion Upper leg lean tissue mass is not associated with physical performance in healthy 50-70y women. These results suggest strength relative to the body mass being accelerated distinguishes gradations in functional performance better than muscle quality healthy 50-70y women.

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Authors
Francis, P., McCormack, W., Toomey, C., Lyons, M., & Jakeman, P.
Affiliations
  • University of Limerick (IE)
  • University of Calgary (CA)
Corresponding author
Francis, Peter
ORCID
Venue
Brazilian Journal of Physical Therapy
Publisher
Elsevier BV
Published
2017-11
Volume
21
Issue
6
Pages
457-464
ISSN
1413-3555 (ISSN-L)
DOI
10.1016/j.bjpt.2017.06.013
PMC
PMC5693432
OpenAlex
W2618919002
Cited by
20
References
2
Citations by year
2024: 1 · 2023: 3 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 5 · 2017: 2 · 2016: 1
FWCI
2.53
Type
journal article
Language
en
Open access
Licence
Locations
  • Brazilian Journal of Physical Therapy (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • University of Limerick Institutional Repository (University of Limerick) (acceptedVersion, cc-by-nc-sa)
  • University of Limerick Institutional Repository (University of Limerick) (acceptedVersion, other-oa)
  • Leeds Beckett Repository (Leeds Beckett University) (submittedVersion)
  • Arrow@dit (Dublin Institute of Technology) (submittedVersion, cc-by-nc-sa)
  • Figshare (submittedVersion, cc-by-nc-sa)
  • University of Limerick Institutional Repository (University of Limerick)
Funders
  • University of Limerick
  • Food for Health Ireland and Enterprise Ireland (CC20080001)
Topics
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Geriatrics and Gerontology › Frailty in Older Adults
  • Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
Keywords
muscle strength, muscle quality, functional performance, quadriceps strength, middle-aged women, body composition, chair stand test, walking speed
MeSH terms
Adult, Body Composition, Cross-Sectional Studies, Female, Humans, Absorptiometry, Photon, Muscle Strength

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