Methods for determining power output and factors affecting the optimal load during free-standing jump squats

The purpose of this thesis was to determine the validity of an linear position transducer / force platform method as compared to a 2D video analysis / force platform method for determining power output during free-standing jump squats, and to examine the effects of strength level and sport background on the optimal load for power output. The results showed that the LPT method was not suitable for measuring power output during free-standing jump squats. In addition, the optimal load range was determined for the VA method to occur between 10% and 20% of a predicted 1RM squat. Strength level did not have a significant affect on the optimal load, however, there were differences in strength and power output by sport. It is recommended that future research examine the specific limitations of an LPT for measuring un-constrained movements, as well as the effects of athletic and training background on the optimal load.