Age-related changes in concentric and eccentric isokinetic peak torque of the trunk muscles in healthy older versus younger men

Alexander David Francis Dallaway; John  Hattersley; Jason Tallis; Derek Renshaw; Corbin Griffen; Michael Duncan

Age-related changes in concentric and eccentric isokinetic peak torque of the trunk muscles in healthy older versus younger men

Alexander David Francis Dallaway, John Hattersley, Jason Tallis, Derek Renshaw, Corbin Griffen, Michael Duncan

Faculty Research Centre for Sport, Exercise and Life Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

This study investigated age-related changes in trunk muscle function in healthy men and the moderating effect of physical activity (PA).
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-1 - 180°·s-1) and contractile modes (concentric and eccentric).
For concentric trunk extension, mixed-effects ANCOVA revealed a significant interaction between angular velocity x age group (p=.026) controlling for PA. Follow-up univariate ANCOVA 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 PA.
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.

Original language	English
Pages (from-to)	(In-press)
Journal	Journal of Aging and Physical Activity
Volume	(In-press)
Publication status	Accepted/In press - 10 Dec 2020

Keywords

muscle strength
ageing
sarcopenia
abdominal muscles
paravertebral muscles

Embargoed Document

Manuscript_Revised
Accepted author manuscript, 212 KB
Embargo ends: 16/03/21

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In: Journal of Aging and Physical Activity , Vol. (In-press), 10.12.2020, p. (In-press).

Research output: Contribution to journal › Article › peer-review

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title = "Age-related changes in concentric and eccentric isokinetic peak torque of the trunk muscles in healthy older versus younger men",

abstract = "This study investigated age-related changes in trunk muscle function in healthy men and the moderating effect of physical activity (PA).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-1 - 180°·s-1) and contractile modes (concentric and eccentric). For concentric trunk extension, mixed-effects ANCOVA revealed a significant interaction between angular velocity x age group (p=.026) controlling for PA. Follow-up univariate ANCOVA 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 PA.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.",

keywords = "muscle strength, ageing, sarcopenia, abdominal muscles, paravertebral muscles",

author = "Dallaway, {Alexander David Francis} and John Hattersley and Jason Tallis and Derek Renshaw and Corbin Griffen and Michael Duncan",

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AU - Dallaway, Alexander David Francis

AU - Hattersley, John

AU - Tallis, Jason

AU - Renshaw, Derek

AU - Griffen, Corbin

AU - Duncan, Michael

PY - 2020/12/10

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N2 - This study investigated age-related changes in trunk muscle function in healthy men and the moderating effect of physical activity (PA).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-1 - 180°·s-1) and contractile modes (concentric and eccentric). For concentric trunk extension, mixed-effects ANCOVA revealed a significant interaction between angular velocity x age group (p=.026) controlling for PA. Follow-up univariate ANCOVA 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 PA.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.

AB - This study investigated age-related changes in trunk muscle function in healthy men and the moderating effect of physical activity (PA).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-1 - 180°·s-1) and contractile modes (concentric and eccentric). For concentric trunk extension, mixed-effects ANCOVA revealed a significant interaction between angular velocity x age group (p=.026) controlling for PA. Follow-up univariate ANCOVA 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 PA.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.

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KW - ageing

KW - sarcopenia

KW - abdominal muscles

KW - paravertebral muscles

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