PNF and Movement

Korea Proprioceptive Neuromuscular Facilitation Association (대한고유수용성신경근촉진법학회)
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Effects of Core and Abdominal Muscle Strengthening Exercises on the Muscle Activity in the Lower Extremity on Unexpected Perturbation

코어운동과 복근강화운동이 비예측 동요 시 다리 근활성도에 미치는 영향

  • Kim, Do-Yeon (Department of Physical Therapy, Uiduk University) ;
  • Kim, Yu-Jin (Department of Physical Therapy, Uiduk University) ;
  • Baek, Ji-Hun (Department of Physical Therapy, Uiduk University) ;
  • Shin, So-Hui (Department of Physical Therapy, Uiduk University) ;
  • Lee, Jung-Min (Department of Physical Therapy, Uiduk University) ;
  • Lee, Myoung-Hee (Department of Physical Therapy, Uiduk University)
  • 김도연 (위덕대학교 물리치료학과) ;
  • 김유진 (위덕대학교 물리치료학과) ;
  • 백지훈 (위덕대학교 물리치료학과) ;
  • 신소희 (위덕대학교 물리치료학과) ;
  • 이정민 (위덕대학교 물리치료학과) ;
  • 이명희 (위덕대학교 물리치료학과)
  • Received : 2017.03.03
  • Accepted : 2017.04.19
  • Published : 2017.08.31
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Abstract

Purpose: This study investigated the effect of core and abdominal muscle-strengthening exercises on muscle activity in the lower extremity on unexpected perturbation. Methods: Twenty subjects were randomly divided into the core exercise group (n=10) or the abdominal muscles strengthening group (n=10). The two groups performed their exercises during three sessions a week for a total of four weeks. The muscle activity in the lower muscles (rectus femoris, biceps femoris, tibialis anterior, gastrocnemius) was assessed using surface electromyography (EMG) and normalized maximal voluntary isometric contraction (MVIC) before and after the exercises. Results: An increase in the tibialis anterior activity after the core and abdominal muscles strengthening exercises was found after four weeks. A significant difference in the pre- and post-exercise was found. The gastrocnemius muscle activity increased in the core exercise group more than the abdominal muscles strengthening group. However, the difference was not significant. Conclusion: The results of this study suggest that the core and abdominal muscles strengthening exercises increased the tibialis anterior muscle activity. It is expected to help make more balance ability that affect who has abdominal muscles weakness.

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References

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