Comparison of Hip Extensor Muscles Activities According to Forward Trunk Lean Angles During Single-leg Deadlift

서지정보

ㆍ발행기관 : 한국전문물리치료학회 ㆍ수록지정보 : 한국전문물리치료학회지 / 30권 / 1호
ㆍ저자명 : Saerin Lee, Duk-hyun An

목차

INTRODUCTION
MATERIALS AND METHODS
1. Subjects
2. Instrumentation
3. Procedures
4. Statistical Analysis
RESULTS
DISCUSSION
CONCLUSIONS
FUNDING
ACKNOWLEDGEMENTS
CONFLICTS OF INTEREST
AUTHOR CONTRIBUTION
ORCID
REFERENCES

영어 초록

Background: Excessive hamstring (HS) activation due to the weakness of the gluteus maximus (GM) causes pain in the hip joint. A single-leg deadlift is a hip extensor exercise, especially GM, that includes functional movements in daily life and complex multi-joint training. In single-leg deadlift, the muscle activity depends on the forward trunk lean angle, and it's necessary to study which muscles are used dominantly depending on the angle.
Objects: The purpose of this study was to compare the effect on the muscle activity of the GM and HS during single-leg deadlift according to different forward trunk lean angles and the ratio of the GM vs HS (GM/HS).
Methods: Twenty-one healthy female participants were recruited. The muscles activities of the GM, HS and the GM/HS ratio were measured through electromyography during single-leg deadlift according to three condition of forward trunk lean angles (30°, 60°, and 90°).
Results: The GM and HS activities significantly differed among three conditions (p < 0.05). GM/HS ratio was significantly higher at 30°and 60° of forward trunk lean compared to 90°. Moreover, the GM activity was significantly higher at 60°of forward trunk lean than at 30° (p < 0.05).
Conclusion: The single-leg deadlift at 60°of forward trunk lean is a proper GM muscle strengthening exercise.

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