The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Difference in Muscle Activity of Deltoid Muscle according to Isokinetic Range of Motion Using Proprioceptive Neuromuscular Facilitation Pattern of Upper Extremity

  • Rhee, Min-Hyung (Department of Rehabilitation Medicine, Pusan National University Hospital) ;
  • Choi, Su-Hong (Department of Rehabilitation Medicine, Pusan National University Hospital) ;
  • Lee, Sang-Yeol (Department of Physical Therapy, Kyungsung University) ;
  • Ha, Kyung-Jin (Department of Rehabilitation Therapy Center Dong-A University Hospital) ;
  • Yoon, Sung-Young (Department of Physical Therapy, Dongju College)
  • Received : 2022.10.24
  • Accepted : 2022.10.31
  • Published : 2022.10.31
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Abstract

Purpose: This study sought to compare the muscle activity of the deltoid muscle according to the range of motion during the proprioceptive neuromuscular facilitation (PNF) upper extremity D2 pattern exercise performed with an isokinetic exercise device. The aim was to provide basic data for selecting an exercise for the relevant segment of the range of motion to enhance function in clinical practice. Methods: In this study, the relevant measurements of the anterior and middle trapezius of 25 healthy adults were taken using a surface electromyography system. The upper extremity pattern exercise was performed in three ranges (0% to 50%, 50% to 100%, and 25% to 75%) using the upper extremity isokinetic device. Results: There was a statistically significant difference in the muscle activity ratios of the anterior and middle deltoid muscles according to the measurement conditions (p<0.05). There was a statistically significant difference in the activity ratio of the middle deltoid muscle according to the measurement conditions in the ratio from the start range to the end range (p<0.05). There was no significant difference in the muscle onset time difference according to the measurement conditions (p>0.05). Conclusion: The muscle activity of the anterior and middle deltoid muscles was analyzed according to the range of motion during the PNF upper extremity pattern exercise performed with an isokinetic device. The results could be used as a basis for selecting exercises for the relevant segment of the range of motion according to the function to be emphasized.

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