Title

Neuromuscular control mechanisms and strategy in arm movements of attempted supranormal speed

Document Type

Article

Publication Date

1-1-1999

Abstract

Rapid, goal-directed elbow flexion movements were examined under interacting conditions of inertial loading and resistance to movement initiation. The resistance ceased when movement began, resulting in quick release movements. Inertial load slowed the movement and lengthened the agonist and antagonist electromyographic (EMG) burst durations. The quick release resulted in larger accelerations but only minimal changes in peak velocity. Most aspects of the triphasic EMG pattern were little affected by the quick release, but the build up of agonist EMG and the corresponding rate of static force development differed markedly between load and quick release conditions. These and other data suggest that the specific pattern of agonist muscle activation is set according to neuromuscular constraints of the antagonist muscle and the expectation of movement dynamics. © 1999 by the American Alliance for Health, Physical Education, Recreation and Dance.

Publication Name

Research Quarterly for Exercise and Sport

Volume Number

70

First Page

335

Last Page

348

Issue Number

4

DOI

10.1080/02701367.1999.10608054

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