The Timing of Intralimb Coordination

Richard G Carson; Stephan Riek; Winston D Byblow; Bruce Abernethy; Jeffery J Summers

doi:10.1080/00222899909600982

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Journal article

Peer reviewed

The Timing of Intralimb Coordination

Richard G Carson, Stephan Riek, Winston D Byblow, Bruce Abernethy and Jeffery J Summers

Journal of Motor Behavior, Vol.31(2), pp.113-118

1999

DOI: https://doi.org/10.1080/00222899909600982

PMID: 11177625

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Abstract

bimanual

preferred frequency

movement dynamics

The authors examined the manner in which self-selected movement frequencies are impacted upon by repeated engagement in an intralimb coordination task and by alterations in the inertial characteristics of the limb. Twelve healthy adult volunteers rhythmically flexed and extended their elbow and wrist joints at a comfortable self-established frequency in 1 of 2 modes of coordination (in-phase and antiphase), while grasping 1 of 3 weighted dowels (no-weight condition [0.03 kg], light weight condition [0.5 kg], heavy weight condition [1.0 kg]). The movement frequencies adopted by subjects on the 3rd of 3 weekly sessions, following more than 120 experimental trials, were appreciably higher than those obtained during an initial session. The addition of mass to the system had an inconsistent influence upon the preferred frequency of movement. When subjects' limbs were loaded with what was deemed to be a light weight (0.5 kg), the movement frequencies that were adopted were indistinguishable from those selected when there was no (0.03 kg) loading of the limbs. In contrast (when subjects' limbs were loaded with a relatively heavy weight (1 kg), the resulting self-selected movement frequencies were reliably lower than when there was no loading of the limbs. The adopted frequency of movement was also influenced in a reliable fashion by the mode of coordination in which the movements were prepared. Those results are discussed with reference to mechanical and neuromuscular constraints on coordination dynamics.

Details

Title: The Timing of Intralimb Coordination
Authors: Richard G Carson (Author) - University of Queensland
Stephan Riek (Author) - University of Queensland
Winston D Byblow (Author) - University of Auckland
Bruce Abernethy (Author) - University of Queensland
Jeffery J Summers (Author) - University of Southern Queensland
Publication details: Journal of Motor Behavior, Vol.31(2), pp.113-118
Publisher: Routlege
DOI: 10.1080/00222899909600982
ISSN: 1940-1027
PMID: 11177625
Organisation Unit: University of the Sunshine Coast, Queensland; Graduate Research School
Language: English
Record Identifier: 99472600702621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Neurosciences; Psychology; Psychology, Experimental; Sport Sciences

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