PNF and Movement

Korea Proprioceptive Neuromuscular Facilitation Association (대한고유수용성신경근촉진법학회)
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The Effects of PNF Patterns on Trunk Muscle Activity According to Position Changes

자세변화에 따른 PNF 패턴이 체간 근육활성에 미치는 영향

  • Kim, Kyung-Hwan (Department of Physical Therapy, Bonifacio Hospital Rehabilitation Center) ;
  • Youn, Hye-Jin (Department of Physical Therapy, Bonifacio Hospital Rehabilitation Center) ;
  • Park, Sung-Hun (Department of Physical Therapy, Bonifacio Hospital Rehabilitation Center) ;
  • Lim, Jin-Woo (Department of Physical Therapy, Bonifacio Hospital Rehabilitation Center)
  • 김경환 (보니파시오병원 재활센터) ;
  • 윤혜진 (보니파시오병원 재활센터) ;
  • 박성훈 (보니파시오병원 재활센터) ;
  • 임진우 (보니파시오병원 재활센터)
  • Received : 2016.03.14
  • Accepted : 2016.04.25
  • Published : 2016.04.30
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Abstract

Purpose: The purpose of this study was to analyze the effects of proprioceptive neuromuscular facilitation (PNF) patterns on electromyography (EMG) activity in the rectus abdominis, internal abdominal oblique, external abdominal oblique, and erector spinae according to position changes. Methods: Ten healthy adults volunteered to participate in the study. The subjects were required to complete exercises that followed two PNF extremity patterns, namely, an upper extremity extension-adduction-internal rotation pattern and a lower extremity flexion-adduction-external rotation pattern. The exercises were applied in the supine, side-lying, and sitting positions. Repeated measure one-way ANOVA and post-hoc Bonferroni correction were used to determine the influence of the patterns on muscle activity for each muscle, and descriptive statistics were then used to determine the local/global muscle ratios. Results: The upper extremity pattern had a significant effect on the rectus abdominis and erector spinae in the supine position, and on the internal oblique and external oblique in the sitting position (p<0.05). The median value for the internal oblique/rectus abdominis showed a high ratio of 2.05, and a high ratio of 1.01 was shown for the internal oblique/external oblique in the sitting position. The lower extremity pattern had a significant effect on the rectus abdominis in the side-lying position and on the internal oblique, external oblique, and erector spinae in the sitting position (p<0.05). The median value for the internal oblique/rectus abdominis showed a high ratio of 2.83 in the sitting position and a high ratio of 1.30 for the internal oblique/external oblique in the side-lying position. Conclusion: The PNF pattern increases local muscle activation in an unstable position. Therefore, when the pattern is used for intervention purposes, trunk stability and varied position changes should be taken into account.

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