Abstract
Since the early 1960's interest has risen for using electrical stimulation (ES) as a supplement to voluntary effort in strength training programs. The purpose of this study was to evaluate the effectiveness of ES combined with simultaneous maximum dynamic contraction. An experimental, randomized control group was used. The independent variables were three methods of training, (a) isotonic weight training, (b) isokinetic resistance, and (c) isokinetic with ES. The dependent variables measured were, (a) peak torque at 36^0 sec, (b) height in the vertical jump, and (c) time in the 50-yard sprint. Results were analyzed using a 3 times 6 split-plot design. No significant differences were found among groups for the design (F_{2,12} = 1.045, P 0.3816). It was concluded that in groups of healthy individuals, ES combined with dynamic contraction in a training program does not develop strength and/or functional capacity more effectively than isokinetic or isotonic contractions without ES.