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EFFECTS OF FULL FRONT SQUAT AND HALF BACK SQUAT ON VERTICAL JUMP

AS Kinnes

Abstract

A.S. Kinnes

Corban University, Salem, OR

The effects of bar placement and squat depth on vertical jump has been widely researched but has been unidentified as to which improves vertical jump the maximum. Additionally, both the placement of the bar and depth of squat have been widely contemplated and researched for maximum squat but never for full vertical jump. PURPOSE: To investigate the improvements of vertical jump in two groups of squatting techniques, full front squat and half back squat. METHODS: Study participants were chosen from a NAIA college HP 121 strength and conditioning class (N=12; male = 7, female = 5). They were chosen by a convenience sample. These students volunteered based on their involvement in a strength and conditioning class and their inexperience in lifting. The subjects participated for one hour each workout session two times a week for a total of 6 hours. Prior to and after 3 weeks of front or back squat training, vertical jump (VJ) and one rep maximum full front squat (1RMFS) or half back squat (1RMBS) were measured. RESULTS: Paired sample T-Test showed a statistically significant increase in maximal weight lifted for both the front squat (N=7) increased maximal lift t (6) = 2.63, p< .039 and back squat (N=5) increased weight, t (4) = 8.57, p< .001. While only a statistically significant increase in vertical jump was found in front squat participants. Front squat increased vertical jump t (6) = 4.5, p< .004. CONCLUSIONS: The results show that both front squat and back squat increase maximal lift while front squat also improves vertical jump.

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