Comparing the effects of intensity and type of static and dynamic voluntary contractions on the anaerobic power of volleyball players

The purpose of the present study was to compare the effects of the intensity and type of voluntary contractions on the anaerobic capacity of young male volleyball players in Qom.
This research was conducted semi-experimentally, with a cross-sectional and applied design, on 12 young male volleyball players in Qom, with at least two years of sports experience. The studied samples, on five different days, randomly one of the protocols of warming up, warming up and performing three sets of four seconds of static half-squat with an intensity of 85% of 1RM and with an intensity of 50% of 1RM; They warmed up and performed four sets of four repetitions of vertical jump with 6% 1RM load by weight vest and 3% 1RM load by weight vest. After 7 minutes and 30 seconds following the implementation of the protocols, the subjects were given the Wingate test. ANOVA test with repeated measures was used to analyze the data, and Benferroni's post hoc test was used to compare the two protocols.
The results of this research showed that there is a significant difference in anaerobic power between the effects of high and low intensity voluntary contractions of static (85 and 50% 1RM) and dynamic (6 and 3% of 1RM weight vest), with general warm-up; This difference is significant in the 3% weight vest protocol test, compared to the general warm-up.
The results of this research have significantly increased the anaerobic power factor in the performance of movement speed with a 3% weight vest load. The most effective of these protocols can be seen in the physical fitness factors of anaerobic power (power and speed functions).