The effectiveness of using electromyographic biofeedback with proprioceptive neuromuscular facilitation : an honors thesis (HONRS 499)

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Gove, Duane R.
Ferrara, Michael S.
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Thesis (B.?.)
Honors College
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Proprioceptive neuromuscular facilitation (PNF) and electromyographic (EMG) biofeedback have typically been used as separate modalities in the practices of injury prevention and physical rehabilitation. The purpose of this project was to determine the effectiveness of using these two strategies simultaneously to increase hip range of motion. Two specific questions were raised--one comparing short term, or day by day, improvements in flexibility, and one comparing long-term results developed over the course of the project. It was hypothesized that using EMG biofeedback would create greater increases in range of motion for both short and long term periods. Fourteen subjects completed a PNF protocol on each leg, three times a week for a period of three weeks. One leg of the subject was monitored with EMG biofeedback during the PNF exercises; the other leg served as the control leg with no EMG biofeedback. Statistical analysis of short term improvements in range of motion revealed that the inclusion of EMG biofeedback produced a 35% greater increase in hip range of motion, thus supporting the hypothesis. Analysis of the long-term effects showed that no significant difference existed between the groups, consequently rejecting the hypothesis. It is believed that increasing the number of PNF sessions per week may help maintain the short-term benefits of using EMG biofeedback.