The nature of the vertical jump test and the standing broad jump.

Abstract The jump-reach test and standing broad jump were investigated as tests of muscle power. The criterion used was the power lever. An analysis of the variance components of the two jump tests revealed that each test involved a large proportion of specific variance. Of the common factor variance muscle power appeared to be only one component. A multi-dimensional factor, jumping ability, was important to both the jump-reach test and standing broad jump. These tests appeared to have limited application as measures of muscle power.