Variable | Abbreviation | Practical Interpretation |
---|---|---|

Theoretical maximal vertical force (intercept) production extrapolated from the linear loaded countermovement jump F-v relationship | Absolute F_{0} (N)Relative F _{0} (N.kg^{-1}) |
Maximal concentric force output in the vertical direction per unit of body mass. Describes the athlete’s force capability to project the centre of mass in the vertical direction. |

Theoretical maximal movement velocity (intercept) extrapolated from the linear loaded countermovement jump F-v relationship | v_{0} (m.s^{-1}) |
Maximal movement velocity in the vertical direction during the countermovement jump. Describes the athlete’s ability to produce force at high velocities in the vertical direction. |

Maximal mechanical external power output in the vertical direction (P_{max} = F_{0} x v_{0}/4) |
Absolute P_{MAX} (W)Relative P _{MAX} (W.kg^{-1}) |
Maximal external power-output capability during the concentric action of the countermovement jump per unit of body mass. |

Slope of the force-velocity relationship | Absolute S_{FV} (N.s.m^{-1})Relative S _{FV} (N.s.m^{-1}.kg^{-1}) |
Index of an athlete’s individual balance between force and velocity capabilities. The more negative the value, and steeper the F-v slope, the more force-dominant the athlete is. |

Jump height | JH (m) | The maximal centre of mass displacement achieved during the flight phase of the countermovement jump. |

Flight time | FT (sec) | Ariel time of the athlete between ‘take-off’ until ‘landing’ in the countermovement jump. |

Take-off velocity | TOV (m.s^{-1}) |
The maximal movement velocity at the conclusion of the propulsion phase |