ach angle of measurement and for all ultrasound measures. An analysis of variance (ANOVA) determined any differences among the three groups' initial isometric torque and muscle thickness measures. No significant differences were found among the groups. Therefore, pre- and post-training torques and muscle thickness were compared among groups using a 3 by 2 repeated measures ANOVA. When significant differences were found, a post-hoc test was used to determine differences among groups or treatments. ANCOVA was also used to obtain adjusted post-training torque values to formulate figures to compare data among groups. For this purpose, pre-training torques were used as the covariates. Pre- to post-training gender effects were also analyzed with ANOVA. Training load, RPE, and the number of repetitions performed during each set of each exercise session were averaged for weeks 1 and 2, 7 and 8, and 13 and 14. An ANOVA was performed to determine any differences between training groups for training load, repetitions, RPE, and time to complete each set of KEXT and KFLEX exercise. Also differences among sets were analyzed for the EX-3 group. Statistical significance was accepted at P greater or equal to 0.05.Significant increases in the amount of weight used for all weeks were noted for the one- and the three-set groups and were not different between the groups. Significant increases in RPE were found for both training groups between weeks 1 and 2, and weeks 7 and 8 but not between weeks 7 and 8 and weeks 13 and 14. Both EX-1 and EX-3 increased isometric knee extension and flexion torque significantly from pre- to post-training at most angles. The control group did not show a significant increase at any angle. There were no significant differences in increased isometric torque values and dynamic strength gains between the EX-1 and EX-3 at any angle for both KEXT and KFLEX. Muscle thickness for the anterior and lateralis thigh muscle...
