Neuromuscular-skeletal origins of predominant patterns of coordination in a rhythmic two-joint arm movement
Journal of Motor Behavior. 2006-01-01; 38(1): 7-14
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1. J Mot Behav. 2006 Jan;38(1):7-14.
Neuromuscular-skeletal origins of predominant patterns of coordination in
rhythmic two-joint arm movement.
de Rugy A(1), Riek S, Carson RG.
(1)Perception and Motor Systems Laboratory, School of Human Movement Studies,
Room, 424, The University of Queensland, Brisbane, QLD 424, Australia.
The authors tested for predominant patterns of coordination in the combination of
rhythmic flexion-extension (FE) and supination- (SP) at the elbow-joint complex.
Participants (N=10) spontaneously established in-phase (supination synchronized
with flexion) and antiphase (pronation synchronized with flexion) patterns. In
addition, the authors used a motorized robot arm to generate involuntary SP
movements with different phase relations with respect to voluntary FE. The
involuntarily induced in-phase pattern was accentuated and was more consistent
than other patterns. The result provides evidence that the predominance of the
in-phase pattern originates in the influence of neuromuscular-skeletal
constraints rather than in a preference dictated by perceptual-cognitive factors
implicated in voluntary control. Neuromuscular-skeletal constraints involved in
the predominance of the in-phase and the antiphase patterns are discussed.
PMID: 16436358 [Indexed for MEDLINE]