Hasson, C. J., Doan, B. K., Robertson, K. M., Dugan, E. L., Shim, J., Newton, R. U., & Kraemer, W. J. (2002). Relationship of 1 RM squat and vertical jump performance in NCAA male volleyball players. Medicine and Science in Sports and Exercise, 34(5), Supplement abstract 189.

Male NCAA volleyball players (N = 11) were measured for 1 RM squat (estimated from 6-10 RM) and standing and approach vertical jump heights.

1 RM squat correlated significantly, but trivially, with both vertical jumps (r = .3 and .29). This suggests that squat strength is not a particularly important feature of vertical jumping. Other factors suggested as being important were strength at faster velocities, rate of force development, stretch-shortening cycle performance, and intermuscular coordination and skill.

Implication. Squat strength is not particularly important in vertical jumping.

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