PCA Demonstrates Trunk Muscle Pattern Variation with Fall Direction

Name: PCA Demonstrates Trunk Muscle Pattern Variation with Fall Direction
Brand: VDM Verlag
SKU: 9783639135428
Price: 1174 CZK
Availability: InStock

Autor: Timothy Craig

Jazyk:

Vazba: Brožovaná

Vydavatel: VDM Verlag

Dostupnost: U nakladatele na objednávku

Odesíláme za 17-27 dnů

1 174 Kč

This study examines the role of the direction of a§fall on neuromuscular response. Electromyography§...

Informace o knize

Autor

Timothy Craig

Jazyk

Angličtina

Vazba

Kniha - Brožovaná

Vydáno

2009

Stránek

EAN

9783639135428

ISBN

3639135423

Enbook ID

06822233

Vydavatel

VDM Verlag

Hmotnost

136

Rozměry

152 x 229 x 5

Kompletní popis

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§(p0.05) stronger reflex-like response than posterior§falls. There was also a significant (p0.05)§difference for the interaction between side of the§erector spinae and fall direction for the§medial-lateral fall directions. Here the§contra-lateral muscle had a stronger reflex-like§response than the ipsi-lateral muscle. Possible§reasons for the observations could be to increase§time available for active responses or decrease the§energy transferred if the head impacted the ground.

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PCA Demonstrates Trunk Muscle Pattern Variation with Fall Direction

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