PNF and Movement

Korea Proprioceptive Neuromuscular Facilitation Association (대한고유수용성신경근촉진법학회)
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Intramuscular Activation of Scapular Stabilizing Muscles During Shrug Exercise and PNF Scapular Pattern Exercise

으쓱 운동과 PNF어깨뼈패턴 시 어깨뼈 안정근의 근활성도

  • Kim, Min-Jeong (Department of Physical Therapy, College of Health Sciences, Kaya University) ;
  • Jeong, Su-Min (Department of Physical Therapy, College of Health Sciences, Kaya University) ;
  • Park, Seong-Kwon (Department of Physical Therapy, College of Health Sciences, Kaya University) ;
  • Park, Du-Jin (Department of Physical Therapy, College of Health Sciences, Kaya University)
  • 김민정 (가야대학교 물리치료과) ;
  • 정수민 (가야대학교 물리치료과) ;
  • 박성권 (가야대학교 물리치료과) ;
  • 박두진 (가야대학교 물리치료과)
  • Received : 2016.07.27
  • Accepted : 2016.08.09
  • Published : 2016.08.31
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Abstract

Purpose: The purpose of this study was to compare the intramuscular activation of the scapular stabilizing muscles and the upper trapezius/middle serratus anterior (UT/MSA) ratios during shrug exercise and proprioceptive neuromuscular facilitation (PNF) scapular pattern exercise. Methods: The participants of this study were 13 young adult men who voluntarily consented to participate in this experiment after listening to its purpose and methods. All participants were instructed on maximal voluntary isometric contraction and scapular exercises. The intramuscular activation of the upper trapezius (UT), lower trapezius (LT), middle serratus anterior (MSA), and lower serratus anterior (LSA) muscles while performing scapular exercises in a side-lying position were measured using surface electromyography. To analyze the muscle activation and UT/MSA ratio between the two exercises, a one-way repeated ANOVA was performed. Post-hoc analyses were conducted using Tukey's multiple comparison and analysis. Hamstring flexibility for each group was measured by a passive straight leg raising test. Results: The shrug exercise showed significantly higher UT activation compared to PNF anterior elevation and posterior elevation scapular patterns. The PNF scapular anterior elevation pattern showed significantly higher serratus anterior activation than the shrug exercise. Additionally, the UT/MSA ratios were significantly lower in the PNF scapular anterior elevation pattern than in the two exercises. Conclusion: Although shrug exercise was effective for strengthening UT, the PNF scapular anterior elevation pattern may be effective for strengthening MSA and improving the UT/MSA ratio.

Keywords

References

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