Comparison of Gluteus Medius and Quadratus Lumborum Muscle Activity During Hip Abduction Exercises in Individuals With Gluteus Medius Weakness

• 발행기관: 한국전문물리치료학회
• 저자명: Kyung-hee Jung Il-young Moon One-bin Lim Chung-hwi Yi
• 간행물 정보: 『한국전문물리치료학회지』제32권 제2호, 111~120쪽, 전체 10쪽
• 주제분류: 의약학 > 재활의학
• 파일형태: PDF
• 발행일자: 2025.08.31

국문 초록

Background: The purpose of this study was to compare gluteus medius (Gmed) and quadratus lumborum (QL) muscle activities and the Gmed/QL activity ratio, during five hip abduction exercises in individuals with Gmed weakness. Objects: Nineteen participants with clinically identified Gmed weakness performed five hip abduction exercises: side-lying hip abduction (SHA), side-bridge (SB), SB using sling (SB-sling), SB with hip abduction (SB-HA), and SB-HA using sling (SB-HA-sling). Surface electromyography recorded Gmed and QL, normalized to %maximum voluntary isometric contraction (%MVIC). A repeated-measures ANOVA was used to assess differences across conditions. Results: Significant differences were found in Gmed (F = 68.980, p = 0.001) and QL (F = 10.676, p = 0.001) activation across exercises. Gmed activity was highest in SB-HA (61.77 ± 14.46 %MVIC), while SHA produced the highest Gmed/QL activity ratio (1.70 ± 0.26), indicating more selective Gmed activation. SB and SB-sling showed lower Gmed activity and higher QL activation. SB-HA-sling resulted in moderate Gmed activation without significantly increasing QL activation. Conclusion: The SB-HA exercise is effective for co-activating Gmed and QL, while SHA and SB-HA-sling are better suited for selectively targeting Gmed with minimal QL compensation. These findings support exercise selection based on specific rehabilitation goals.

목차

INTRODUCTION

MATERIALS AND METHODS

RESULTS

DISCUSSION

CONCLUSIONS

FUNDING

ACKNOWLEDGEMENTS

CONFLICTS OF INTEREST

AUTHOR CONTRIBUTION

ORCID

REFERENCES

키워드

Core stability training Electromyography Gluteus medius Hip abduction Quadratus lumborum Suspension therapy