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Kinesiology Commons

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Full-Text Articles in Kinesiology

Neurophysiological Reflex Mechanisms’ Lack Of Contribution To The Success Of Pnf Stretches, J. Brent Feland, Sterling C. Hilton, J. Ty Hopkins, Iain Hunter, Ulrike H. Mitchell, J. William Myrer Jan 2009

Neurophysiological Reflex Mechanisms’ Lack Of Contribution To The Success Of Pnf Stretches, J. Brent Feland, Sterling C. Hilton, J. Ty Hopkins, Iain Hunter, Ulrike H. Mitchell, J. William Myrer

Faculty Publications

Background and Purpose: Proprioceptive neuromuscular facilitation (PNF) stretches are widely used in athletics and rehabilitation. Although it has been shown that they produce better range-of-motion (ROM) increases than the slow or static stretch, the mechanisms responsible remain an enigma. This study was conducted to determine whether the previously proposed neurophysiological mechanisms of reciprocal inhibition and autogenic inhibition are responsible for the success of PNF stretches. In addition, the authors assessed the existence of the phenomenon of successive induction because it is used to strengthen reciprocal inhibition. Methods: Eighteen subjects 17–44 y performed the PNF stretches contract–relax (CR) and contract–relax, agonist …


The Short-Term Effect Of Whole Body Vibration Training On Sprint Start Performance In Collegiate Athletes, J. Brent Feland, J. Ty Hopkins, Iain Hunter, Brad Roberts Jan 2009

The Short-Term Effect Of Whole Body Vibration Training On Sprint Start Performance In Collegiate Athletes, J. Brent Feland, J. Ty Hopkins, Iain Hunter, Brad Roberts

Faculty Publications

Whole body vibration (WBV) is characterized by a vibratory stimulus emitted throughout the body through the use of a vibrating platform on which the subject stands. Studies have shown over 30% increases in maximal explosive strength such as maximal speed biceps curl as well as increases in maximum dynamic force such as maximal sitting bench pull as the result of vibration. The purpose of this study was to investigate the effects of short term whole-body vibration on sprint starts among collegiate track athletes. On the first day eleven subjects were randomly assigned to either a non-vibration or vibration group for …