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Lower-limb muscle strength: normative data from an observational population-based study

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posted on 01.02.2020, 00:00 authored by Julie PascoJulie Pasco, Amanda StuartAmanda Stuart, K L Holloway-Kew, Monica Chimwemwe Tembo, Sophia Sui, Kara Anderson, Natalie HydeNatalie Hyde, Lana WilliamsLana Williams, Mark KotowiczMark Kotowicz
BACKGROUND: The extent of muscle deterioration associated with ageing or disease can be quantified by comparison with appropriate reference data. The objective of this study is to present normative data for lower-limb muscle strength and quality for 573 males and 923 females aged 20-97 yr participating in the Geelong Osteoporosis Study in southeastern Australia. METHODS: In this cross-sectional study, measures of muscle strength for hip flexors and hip abductors were obtained using a Nicholas manual muscle tester, a hand-held dynamometer (HHD; kg). Leg lean mass was measured by dual energy x-ray absorptiometry (DXA; kg), and muscle quality calculated as strength/mass (N/kg). RESULTS: For both sexes, muscle strength and quality decreased with advancing age. Age explained 12.9-25.3% of the variance in muscle strength in males, and 20.8-24.6% in females; age explained less of the variance in muscle quality. Means and standard deviations for muscle strength and quality for each muscle group are reported by age-decade for each sex, and cutpoints equivalent to T-scores of - 2.0 and - 1.0 were derived using data from young males (n = 89) and females (n = 148) aged 20-39 years. CONCLUSIONS: These data will be useful for quantifying the extent of dynapenia and poor muscle quality among adults in the general population in the face of frailty, sarcopenia and other age-related muscle dysfunction.

History

Journal

BMC musculoskeletal disorders

Volume

21

Article number

89

Pagination

1 - 8

Publisher

BioMed Central

Location

London, Eng.

eISSN

1471-2474

Language

eng

Publication classification

C1 Refereed article in a scholarly journal