PNF and Movement

Korea Proprioceptive Neuromuscular Facilitation Association (대한고유수용성신경근촉진법학회)
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Comparison of the Thickness of the Neck Flexor Between Open and Closed Kinetic Chain Exercises During Chin-in Movement

슬링을 이용한 열린사슬운동과 닫힌 사슬 운동의 턱당기기 동작 시 목굽힘근 두께 비교

  • Lee, Ju-Hun (Department of Physical Therapy, Graduate School, Kyungsung University) ;
  • Han, Jin-Tae (Department of Physical Therapy and Institute for Rehabilitation Science, Kyungsung University)
  • 이주훈 (경성대학교 일반대학원 물리치료학과) ;
  • 한진태 (경성대학교 물리치료학과)
  • Received : 2020.06.16
  • Accepted : 2020.06.30
  • Published : 2020.12.31
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Abstract

Purpose: The purpose of this study was to investigate the effect of open and closed kinetic chain exercises with a sling on neck flexor thickness during chin-in movement in office workers with forward head posture. Methods: Thirty-one selected subjects randomly performed chin-in movement in open kinetic chain and closed kinetic chain exercises using a sling. All subjects were measured for their neck flexor thickness using ultrasound measurement equipment during the performance of chin-in movement in open and closed kinetic chain exercised. A paired t-test was used to compare the thickness of the total neck flexor, superficial, and deep neck flexor, respectively, between open and closed kinetic chain exercises with chin-in movement. Results: The thickness of the superficial neck flexor diminished in size more greatly during the chin-in movement with the closed kinetic chain than the open kinetic chain, but this was not a statistically significant difference (p > 0.05). On the other hand, the thickness of the total neck flexor and deep neck flexor had more greatly increased during the chin-in movement with the closed kinetic chain than the open kinetic chain, and this was a statistically significant differences (p < 0.05). Conclusion: This study suggested that chin-in movement with a closed kinetic chain is more effective in activating the deep neck flexor than the open kinetic chain. Thus, we believe that the closed kinetic chain exercise using a sling is an effective intervention to correct the postural alignment of individuals with forward head posture.

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References

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