Relationship between hip and knee strength and knee valgus during a single leg squat.

@article{Claiborne2006RelationshipBH,
  title={Relationship between hip and knee strength and knee valgus during a single leg squat.},
  author={Tina L. Claiborne and Charles W. Armstrong and Varsha Gandhi and Danny M. Pincivero},
  journal={Journal of applied biomechanics},
  year={2006},
  volume={22 1},
  pages={
          41-50
        }
}
The purpose of this study was to determine the relationship between hip and knee strength, and valgus knee motion during a single leg squat. Thirty healthy adults (15 men, 15 women) stood on their preferred foot, squatted to approximately 60 deg of knee flexion, and returned to the standing position. Frontal plane knee motion was evaluated using 3-D motion analysis. During Session 2, isokinetic (60 deg/sec) concentric and eccentric hip (abduction/adduction, flexion/extension, and internal… 
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...

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