Figure 1. Representative (A) force- and velocity-time curves, and (B) force- and power-time curves for the behind-the-neck push jerk performed at 80% of 1RM. The figure illustrates the propulsive phase, the period from zero velocity to peak velocity, where all kinetic and kinematic variables were calculated. Impulse (IMP), shown as the shaded area, is the integral of the force-time curve during this phase.