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KMID : 0357220090210030017
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Journal of Korean Society Physical Therapy
2009 Volume.21 No. 3 p.17 ~ p.24
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The Effects of CI Technique in PNF on the Muscle Activity, Fatigue, and Balance in Hemiplegic Patients
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Ji Sang-Goo
Lee Moon-Hwan
Kim Myung-Kwon
Jun Hye-Jin
Lee Chang-Ryeol
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Abstract
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Purpose: The purpose of this study was to investigate the effects of a combination of isotonic (CI) technique on the balance, muscle fatigue and muscle activities of the quadriceps muscle in the paretic leg of hemiplegic patients.
Method: All the subjects received a combined isotonic technique of proprioceptive neuromuscular facilitation (PNF) for about 30 minutes 3 times per week for 6 weeks. The root mean square (RMS) and mid frequency (MF) were recorded by surface electromyography (EMG)(EMG/EP system, OXFORD Medelec, UK) during maximal voluntary isometric contractions (MVIC). The balance ability was measured by a balance system (BIODEX, USA).
Result: The RMS of the quadriceps muscle at post-treatment was significantly increased compared to that at pretreatment (p<0.05). Yet there was no significant difference among the three muscles. There were no significant difference in the MF of the vastus lateralis and rectus femoris between pre- and post-treatment, but the MF of the vastus medialis was significantly decreased (p<0.05). There was a significant difference in the vastus medialis and lateralis between pre- and post-treatment (p<0.05). Moreover, the overall stability index at post-treatment was significantly decreased compared to that at pre-treatment (p<0.05). But there was no significant difference between the anterior/posterior and medial/lateral stability indexes.
Conclusion: The results of this study indicated that a CI technique of PNF had an effect to improve the balance and muscle activity in hemiplegic patients.
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KEYWORD
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Balance activity, Combination of isotonic, Muscle activation, Proprioceptive neuromuscular facilitation
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