The effect of the squat exercise on knee stability

Past studies have produced conflicting results as to the effect of squat exercises on knee stability. One hundred male and female college students were measured using a knee ligament arthrometer on nine tests of knee stability. Over an 8-wk training program, full or half squats did not consistently...

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Bibliographic Details
Published in:Medicine and science in sports and exercise 1989-06, Vol.21 (3), p.299-303
Main Authors: Chandler, T J, Wilson, G D, Stone, M H
Format: Article
Language:English
Subjects:
Athletic Injuries - prevention & control
Exercise
Female
Humans
Knee Injuries - prevention & control
Knee Joint - physiology
Ligaments, Articular - physiology
Male
Methods
Space life sciences
Weight Lifting
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Summary:Past studies have produced conflicting results as to the effect of squat exercises on knee stability. One hundred male and female college students were measured using a knee ligament arthrometer on nine tests of knee stability. Over an 8-wk training program, full or half squats did not consistently affect knee stability compared to non-squatting controls. To measure the effect of long-term squat training 27 male powerlifters (14 Elite or Master Class) and 28 male weightlifters (8 Elite or Master Class) were measured on the same tests. Powerlifters were significantly tighter than controls on the anterior drawer at 90 degrees of knee flexion. Both powerlifters and weightlifters were significantly tighter than controls on the quadriceps active drawer at 90 degrees of knee flexion. Data on powerlifters and weightlifters were also analyzed by years of experience and skill level. No effect of squat training on knee stability was demonstrated in any of the groups tested.
ISSN:0195-9131
DOI:10.1249/00005768-198906000-00012