The timing of intralimb coordination

Carson, R. G., Riek, S,, Byblow, W. D., Abernethy, B. and Summers, J. J. (1999) The timing of intralimb coordination. Journal of Motor Behaviour, 31 2: 113-118.

Author Carson, R. G.
Riek, S,
Byblow, W. D.
Abernethy, B.
Summers, J. J.
Title The timing of intralimb coordination
Journal name Journal of Motor Behaviour   Check publisher's open access policy
ISSN 0022-2895
Publication date 1999
Sub-type Article (original research)
Volume 31
Issue 2
Start page 113
End page 118
Total pages 6
Place of publication Washington, DC
Publisher Heldref
Collection year 1999
Language eng
Subject C1
320799 Neurosciences not elsewhere classified
780108 Behavioural and cognitive sciences
Abstract 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. Ln 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.
Keyword Neurosciences
Psychology
Sport Sciences
Psychology, Experimental
Bimanual
Movement Dynamics
Preferred Frequency
Rhythmic Movements
Bimanual Coordination
Dynamics
Phase
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Human Movement and Nutrition Sciences Publications
 
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Created: Tue, 10 Jun 2008, 14:20:44 EST