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Journal Article

Citation

Pope MH, Broman H, Hansson T. J. Spinal Disord. 1990; 3(2): 135-142.

Affiliation

Vermont Rehabilitation Engineering Center, University of Vermont, Burlington 05405.

Copyright

(Copyright © 1990, Lippincott Williams and Wilkins)

DOI

unavailable

PMID

2134421

Abstract

An impact method, combined with pins placed into the spinous process at L3, has been used to establish the dynamic response of the spine of the seated subject. The resonant frequency is at 4-5 Hz, due primarily to a vertical response of the buttocks-pelvis system. A maximum attenuation at 8 Hz occurs because of a second resonance due to pelvic rotation. The attenuation is also affected by additional load and by the addition of a helmet. Neck braces have no dynamic effect.


Language: en

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