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HIP EXTENSION with LEG STRAIGHT – RESEARCH

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Click on Image to Enlarge

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MOMENT ARM & EMG STUDY

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GLUTEUS MAXIMUS
– Straight Leg Hip Extension with Hip @ 0°, 30°, 60°, 90°  

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Influence of Joint Position on EMG and Torque During MVIC of Hamstrings and GMax – Worrell – 2001
· PDF File .
Procedure
– 50 subjects; prone on testing table
– MVIC hip extension at 4 hip angles tested separate from hamstrings
Results – Gluteus Maximus
Net Hip Joint Moment: 90° = 100Nm | 60° = 71Nm | 30° = 58Nm | 0° = 36Nm
EMG MVIC – Gluteus Maximus: 0° = 94% | 30° = 84% | 60º = 80% | 90° = 64%

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EMG STUDIES

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GLUTEUS MAXIMUS, AD-DUCTOR MAGNUS, LATERAL & MEDIAL HAMSTRINGS
– Straight Leg Hip Extension with Hip Angle @45º with Leg in Neutral, Ab-ducted or Ad-ducted

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Comparison of hip extensor muscle activity including the adductor magnus during three prone hip extension exercises – 2019 – Ko
Procedure
– 22 healthy participants; EMG for the Amag, Gmax, and medial and lateral hamstrings during:
1. hip extension @45º of hip flexion, 0º of knee flexion (PHE)
2. PHE with hip abduction (PHE-ABD)
3. PHE with hip adduction (PHE-ADD)
Results
Prone Hip Extension: adductor magnus 58 . gluteus maximus 56 . medial hamstrings 54 . lateral hamstrings 45
Prone Hip Extension with Hip Ab·duction: gluteus maximus 86 . adductor magnus 60 . medial hamstrings 60 . lateral hamstrings 44
Prone Hip Extension with Hip Ad·duction: adductor magnus 90 . medial hamstrings 45 . lateral hamstrings 45 . gluteus maximus 40 

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