Two Speeds of Isokinetic Exercise as Related to the Vertical Jump Performance of Women

Abstract

Abstract In order to ascertain the effect of 2 contrasting speeds of isokinetic training programs upon performance of women in the vertical jump, 48 varsity and second team intercollegiate volleyball players from 4 universities were randomly assigned to either a control or isokinetic training group. After performing 3 sets of 10 leg press repetitions maximum, 3 days/wk for 8 wks, on isokinetic speed controlled machines, the groups were compared on a strength measure and on vertical jump performance. According to the group to which they were assigned (control, fast speed, or slow speed) subjects from all schools were combined according to treatment effect for comparison purposes on the vertical jump. For the strength measure, the combined slow or fast speed subject groupings formed an experimental treatment group which was compared to a combined control group. A 2-way ANOVA with repeated measures on 1 factor was applied to data obtained on the jump and on each of the strength measures. Results indicated th...