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Aging effects on the metabolic and cognitive energy cost of interlimb coordination

journal contribution
posted on 2005-03-01, 00:00 authored by W Sparrow, Suzanne Parker, B Lay, Michael Wengier
Many everyday motor tasks have high metabolic energy demands, and some require extended practice to learn the required coordination between limbs. Eight older (73.1 6 4.4 years) and 8 younger (23.3 6 5.9) men practiced a  high-energy two-hand coordination task with both 1808 and 908 target  relative phase. The older group showed greater performance error in both conditions, and performance at 908 was strongly attracted to antiphase coordination (1808). In a retention test one week following the acquisition trials, the older group had learned the 1808 condition but did not learn the 908 condition. Metabolic energy cost was not different between groups, but the older men showed higher heart rate and both conditions imposed  greater cognitive demands as revealed in auditory probe reaction time. Older adults’ motor learning may be inhibited by elevated heart rate at the same  oxygen cost, increased cognitive cost, and an attraction toward more  established low-energy in-phase or antiphase coordination.

History

Journal

Journals of gerontology. series A, biological sciences and medical sciences

Volume

60

Issue

3

Pagination

312 - 319

Publisher

Gerontological Society of America

Location

Washington, D.C.

ISSN

1079-5006

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2005, Gerontological Society of America

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