Abstract
With the previous development of a new test of leg power based on scientific principles, the problem of the components of the term muscular power was investigated. A test of leg speed using the bicycle ergometer was refined and had a test-retest reliability 0.969 when subsequently used on the experimental sample of 62 adult males. The factors of leg speed and leg power were then compared and a correlation of +0.470 was established. This was mathematically lower than figures relating speed and power obtained by previous researches in this field and was probably due to the differences in the criterion measures together with sample and experimental error.