Sprint, Jump Performances, and Force-Velocity Profile in A Well-Trained Football Player: A Pilot Study

Abstract

The objective of this pilot study is to find the well-trained football players’ force-velocity profile based on their sprint and jump performances. The participants of the study were boys (n=28), aged 19-21. To achieve the tasks, participants will be recruited to perform vertical squat jump tests against multiple external loads (vertical) by using the My jump 2 application and linear 30m sprints (horizontal) by using the My Sprint application to evaluate lower and upper limbs’ force-velocity profiles of the players. The vertical and horizontal force-velocity profiling (i.e., theoretical maximal values of force (Fo), the maximal value of velocity (Vo), and maximal power (Pmax) as well as the main performances variable (unloaded Squat Jump height in jumping and 30m- sprint time will be measured. The slopes of those profiles will be calculated. If the player’s Force-velocity profile (0-90%), players are force deficient. Strength-orientated training should be enforced on the player. If the player’s Force-velocity profile (>120%), players are velocity deficient. Speed training should be focused on the player. This study is to identify which players are force deficit and velocity deficit. This pilot study provided a descriptive reference for the player to have more individualized training programs and thus increase the player’s sprint and jump performances