PNF and Movement

Korea Proprioceptive Neuromuscular Facilitation Association (대한고유수용성신경근촉진법학회)
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Immediate Effect of Biofeedback Training of Gluteus Medius on Dynamic Balance during Single Leg Squat

한다리 스쿼트 시 중간볼기근의 생체되먹임 훈련이 동적 균형에 미치는 즉각적인 효과

  • Kyung-Hye Yang (Department of Physical Therapy, Graduate School, Catholic University of Pusan) ;
  • Jong-Chul Jung (Department of Physical Therapy, Pusan National University Yangsan Hospital) ;
  • Du-Jin Park (Department of Physical Therapy, College of Health Sciences, Catholic University of Pusan)
  • 양경혜 (부산가톨릭대학교 물리치료학과 대학원) ;
  • 정종철 (양산부산대학교병원 물리치료실) ;
  • 박두진 (부산가톨릭대학교 물리치료학과)
  • Received : 2023.07.14
  • Accepted : 2023.08.04
  • Published : 2023.08.31
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Abstract

Purpose: This study aims to investigate the immediate effects of electromyography (EMG) biofeedback training of the gluteus medius on dynamic balance during single leg squats in healthy individuals. Methods: The sample size in this study was estimated using the G-power program at an effect size of 0.4, a significance level (α) of 0.05, and a testing power of 0.90. In addition, as a result of considering the 10% dropout rate, this study recruited 21 healthy individuals (8 males and 13 females). All subjects measured the Y-balance test-lower quarter (YBT-LQ) and limits of stability (LOS) before and after a single leg squat (SLS) and SLS with EMG biofeedback training of the gluteus medius (SLSEB). They were trained for 10 minutes for each exercise, and two dynamic balance tests were performed three times. Results: There was a significant difference in the YBT-LQ score between the two exercises (p < 0.05). In the YBT-LQ score, there was a significant difference before and after SLS and SLSEB (p < 0.05). SLSEB showed a significantly higher YBT-LQ score than SLS (p < 0.05). There was a significant difference in LOM between the two exercises (p < 0.05). However, there was no significant difference between the two exercises. Conclusion: A single-leg squat with EMG biofeedback exercises is an effective method to improve dynamic balance, such as the YBT-LQ.

Keywords

Acknowledgement

이 논문은 2023년도 부산가톨릭대학교 교내연구비에 의하여 연구되었음.

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