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Age-related changes in concentric and eccentric isokinetic peak torque of the trunk muscles in healthy older versus younger men
Hattersley, John Tallis, Jason Renshaw, Derek Griffen, Corbin Duncan, Michael
Hattersley, John
Tallis, Jason
Renshaw, Derek
Griffen, Corbin
Duncan, Michael
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Epub Date
Issue Date
2021-04-30
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Abstract
This study investigated age-related changes in trunk muscle function in healthy men and the moderating effect of physical activity. Twelve older (67.3 ± 6.0 years) and 12 younger (24.7 ± 3.1 years) men performed isokinetic trunk flexion and extension tests across a range of angular velocities (15°/s–180°/s) and contractile modes (concentric and eccentric). For concentric trunk extension, mixed-effects analysis of covariance revealed a significant interaction between Angular velocity × Age group (p = .026) controlling for physical activity. Follow-up univariate analysis of covariance revealed that the younger group produced significantly greater peak torque for all concentric extension conditions. Eccentric trunk strength was somewhat preserved in the older group. Age-related changes in trunk strength were independent of physical activity. The normal loss of trunk muscle strength in older age is muscle- and contractile-mode specific. These findings provide guidance for effective intervention strategies to offset adverse health outcomes related to trunk strength loss in older adults.
Citation
Dallaway, ADF, Hattersley, J, Tallis, J, Renshaw, D, Griffen, C & Duncan, M (2021) Age-related changes in concentric and eccentric isokinetic peak torque of the trunk muscles in healthy older versus younger men. Journal of Aging and Physical Activity, 29(6), pp. 941-951
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Research Unit
PubMed ID
33931572 (pubmed)
PubMed Central ID
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Type
Journal article
Language
en
Description
Accepted author manuscript version reprinted, by permission, from Journal of Aging and Physical Activity, 2021, volume 29, issue 6, pp. 941–951, https://doi.org/10.1123/japa.2020-0421 © Human Kinetics, Inc. The accepted manuscript may differ from the final published version.
Series/Report no.
ISSN
1063-8652
EISSN
1543-267X