Pca Demonstrates Trunk Muscle Pattern Variation with Fall Direction
by Timothy Craig (9783639135428)

Pca Demonstrates Trunk Muscle Pattern Variation with Fall Direction
 
Timothy Craig
Release Date: 01 April 2009
Format: Paperback
Pages: 84
Category: Engineering
Publisher: VDM Verlag
ISBN: 9783639135428
ISBN-10: 3639135423



This study examines the role of the direction of a fall on neuromuscular response. Electromyography sensors were positioned on the erector spinae of twenty subjects. Falls, simulating slips, occurred in the anterior, posterior, and medial-lateral directions. The average activation curves for the four different fall directions displayed different characteristics. Observations were supported by principal component analysis (PCA). PCA coefficients related all fall directions to a single reflex-like response. Analysis of variance on the coefficients demonstrated that anterior falls had a significantly (p

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