대한정형도수물리치료학회지 (The Journal of Korean Academy of Orthopedic Manual Physical Therapy)

  • 제29권1호
  • /
  • Pages.41-52
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  • 2023
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  • 1226-3680(pISSN)
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  • 2508-7282(eISSN)
대한정형도수물리치료학회 (Korean Academy of Orthopedic Manual Physical Therapy)
권호 표지

시각 차단과 불안정한 지지면을 이용한 불가리안 스플릿 스쿼트 운동 시 동적 균형 능력과 근속성의 비교

Comparison of Dynamic Balance Ability and Leg Muscle Properties during Bulgarian Split Squat Exercises using the Visual Block and Unstable Support Plane

  • 양진현 (우송대학교 보건복지대학 물리치료학과) ;
  • 이교현 (우송대학교 보건복지대학 물리치료학과) ;
  • 박경호 (우송대학교 보건복지대학 물리치료학과) ;
  • 박수경 (우송대학교 보건복지대학 물리치료학과)
  • Jin-hyun Yang (Dept. of Physical Therapy, College of Health and Welfare, Woosong University) ;
  • Gyo-hyeon Lee (Dept. of Physical Therapy, College of Health and Welfare, Woosong University) ;
  • Kyung-ho Park (Dept. of Physical Therapy, College of Health and Welfare, Woosong University) ;
  • Soo-kyoung Park (Dept. of Physical Therapy, College of Health and Welfare, Woosong University)
  • 투고 : 2023.03.22
  • 심사 : 2023.04.11
  • 발행 : 2023.04.28
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초록

Background: Bulgarian split squat (BSS) is beneficial to improve dynamic balance ability and muscle activity of lower extremities, however its effects have not been fully investigated. Therefore, this study aimed to compare changes in dynamic balance ability and muscle properties according to various modifications of BSS exercises. Methods: Thirty healthy male volunteers participated in this study, and they were randomly divided into three different groups. The subjects performed the BSS exercise either on a stable surface with the eyes opened (n=10) or eyes closed (n=10), and on an unstable support plane with eyes opened (n=10) conditions, respectively. Dynamic balance ability was measured via Biodex balance system under the eyes-opened and closed conditions. Additionally, muscle properties of the rectus femoris (RF), vastus medialis (VM) and vastus lateralis (VL) were evaluated. Results: Dynamic balance ability did not show the significant differences among the groups that performed the BSS exercises. However, in the Unstable group, there were significant differences in the overall stability index and anterior posterior stability index under the eyes-closed condition between pre-exercise and post-exercise. In comparison of muscle properties according to the groups, RF muscle showed a significant difference in amount of change of elasticity (p=.038). Additionally, there were significant changes in post measurements of VM muscle tone (p=.016), stiffness (p=.012) and elasticity (p=.002). VL muscle, however had no significant differences in muscle properties. Conclusion: These results indicate that BSS exercises could induce the alteration of RF and VM muscle properties, in particular VM muscle which is susceptible to weakness. Thus, BSS could be applied in various ways as an effective rehabilitation exercise.

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