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Age-related differences in inhibitory processes during interlimb coordination


Fujiyama, H and Garry, MI and Levin, O and Swinnen, SP and Summers, JJ, Age-related differences in inhibitory processes during interlimb coordination, Brain Research, 1262, (March) pp. 38-47. ISSN 0006-8993 (2009) [Refereed Article]

DOI: doi:10.1016/j.brainres.2009.01.023


The study examined the neurophysiological correlates of age-related changes in the coordination of hand and foot movements. Young and older adults (N = 30) performed cyclical isodirectional and non-isodirectional hand–foot movements with contralateral and ipsilateral limb combinations. Motor evoked potentials (MEPs) and silent period durations following transcranial magnetic stimulation (TMS) were measured from the right extensor carpi radialis (ECR) muscle during the interlimb coordination tasks. Older adults demonstrated lower coordination stability than younger adults, particularly when performing non-isodirectional movements with ipsilateral limbs. For all coordination tasks, MEP amplitude was lower in older compared with young participants. Young adults showed significantly longer silent period durations when the coordination pattern involved ipsilateral limbs than during contralateral limb coordination. In contrast, silent period durations did not differ between contralateral and ipsilateral limb coordination in older adults. These results suggest that deterioration in motor performance with advancing age may be associated with a decreased ability to modulate inhibitory function.

Item Details

Item Type:Refereed Article
Keywords:Aging; Silent period; Interlimb coordination; Transcranial magnetic stimulation
Research Division:Health Sciences
Research Group:Sports science and exercise
Research Field:Motor control
Objective Division:Health
Objective Group:Specific population health (excl. Indigenous health)
Objective Field:Health related to ageing
UTAS Author:Fujiyama, H (Dr Hakuei Fujiyama)
UTAS Author:Garry, MI (Dr Michael Garry)
UTAS Author:Summers, JJ (Professor Jeffery Summers)
ID Code:56540
Year Published:2009
Web of Science® Times Cited:61
Deposited By:Psychology
Deposited On:2009-05-12
Last Modified:2014-12-05

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