Core strength and lower extremity alignment during single leg squats.

@article{Willson2006CoreSA,
  title={Core strength and lower extremity alignment during single leg squats.},
  author={John D Willson and Mary Lloyd Ireland and Irene McClay Davis},
  journal={Medicine and science in sports and exercise},
  year={2006},
  volume={38 5},
  pages={
          945-52
        }
}
INTRODUCTION/PURPOSE Muscles of the trunk, hip, and knee influence the orientation of the lower extremity during weight bearing activities. The purpose of this study was threefold: first, to compare the orientation of the lower extremity during a single leg (SL) squat among male and female athletes; second, to compare the strength of muscle groups in the trunk, hips, and knees between these individuals; and third, to evaluate the association between trunk, hip, and knee strength and the… 

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