Efecto de sobrecargas ligeras sobre el rendimiento del salto vertical con contramovimiento / Effect Of Light Overloads On Countermovement Vertical Jump Performance

The purpose of this study was to determine the effect of different light overloads on the vertical impulse, velocity of center of mass and peak power during performing two consecutive maximum vertical jumps. 28 athletes practicing different sports where vertical jump is a basic skill have participated. Force platform, operating at 500 Hz, temporally synchronized to a video camera, which recorded at 210 Hz the sagittal plane of the jumps were used. The results have shown that, when overloads of 7,5% of body weight are used , the time used for the counter- phase increases. The vertical impulse and peak power do not vary with the use of different levels of light overloads used in this study, however , the take-off velocity the CM is reduced with a similar percentage increase in overload.