Example of single-leg strength testing on the horizontal Plyo-press. (A) During single-leg peak isometric testing, the weight stack was overloaded. Overloading the weight stack prevented sled movement, thereby allowing for an isometric contraction. (B) Subjects performed repeated jumps during the single-leg jump tests. Illustrated is an example of a concentric Plyo-press jump from push-off (A) to peak height (B). Weight stack resistance was set at 75% of body mass.