Nordic hamstring exercise and flywheel inertial training are currently the most used eccentric resistance training methods in youth athletes.

The Nordic hamstring exercise has been shown to provide positive adaptations in measures of physical performance (i.e., sprint speed and change of direction); however, these appear to be mediated by an increase in breakpoint angle (the angle at which the individual can no longer resist the increasing gravitational moment and falls to the floor).

A minimum of 3 familiarisation trials is an essential prerequisite to effectively utilise flywheel inertial training. To ensure the greatest carry over to measures of physical performance after flywheel inertial training, youth athletes should be instructed to gently resist during the first third of the eccentric phase before working maximally to decelerate the rotating flywheel.