Effect of Knee Position on Hip and Knee Torques During the Barbell Squat

@article{Fry2003EffectOK,
  title={Effect of Knee Position on Hip and Knee Torques During the Barbell Squat},
  author={Andrew C. Fry and J. Chadwick Smith and Brian K. Schilling},
  journal={Journal of Strength and Conditioning Research},
  year={2003},
  volume={17},
  pages={629–633}
}
Some recommendations suggest keeping the shank as vertical as possible during the barbell squat, thus keeping the knees from moving past the toes. This study examined joint kinetics occurring when forward displacement of the knees is restricted vs. when such movement is not restricted. Seven weight-trained men (mean ± SD; age = 27.9 ± 5.2 years) were videotaped while performing 2 variations of parallel barbell squats (barbell load = body weight). Either the knees were permitted to move… 

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