Why You Shouldn't Worry About Butt Wink (Slight Lumbar Flexion During Squat)

08 Jan 2014 07:02 579
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Study On Lumbar Flexion During Squat - http://www.teamusa.org/~/media/USA_Weightlifting/Documents/Research%20Articles/NSCA_-_The_Lumbar_and_Sacrum_Movement_Pattern_During_the_Back_Squat.pdf
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