Relationship between Maximal Eccentric and Concentric Forces with Flight Time in Block Jump skill of young professional volleyball players

Investigating the relationship and correlation between kinetic parameters, especially between the maximum force and the flight time variable play an important role in increasing the jump height and preventing various injuries in volleyball players. Therefore, the aim of the present study was to investigate the relationship between maximum concentric and eccentric forces and flight time in block jump skill of young professional volleyball players.

21 young male volleyball players performed the block jump skill with the maximum jump height on the force plate system. The maximum of concentric and eccentric forces and flight time were investigated and extracted. Pearson correlation method was used to estimate the relationship between concentric, eccentric maximum force and flight time and linear regression method was employed to determine the load factor order of concentric and eccentric maximum forces.

The results showed that there is no significant correlation between any of the research variables (maximum eccentric force, concentric force and flight time). The factor load of the maximum concentric force is much higher than the maximum eccentric force in the flight time variable and the maximum eccentric force has a negative relationship, while the maximum concentric force shows a positive relationship with the flight time.

It is suggested that coaches, players and volleyball practitioners pay special attention to the different phases of jumping with the aim of optimizing performance and better designing training programs.