SmartJump Metrics

The Portable Jump Mat in the SmartJump system measures flight time and contact time during a jumping protocol. From this data, the system calculates additional information that can be viewed in-app and online.

Descriptions

Contact time (ms) -  the time, measured in milliseconds, an athlete spends in contact with the mat between consecutive jumps.

Flight time (ms) - the time, measured in milliseconds, an athlete spends in the air during a jump.

Jump height (cm or in) - the height jumped by an athlete, measured in centimetres or inches.

Flight time / Contact time - the flight time divided by the contact time.

Reactive Strength Index (RSI) - the jump height divided by the contact time.

Peak Power Output (PPO) - the max output of the jump.

Peak Power Output / Total mass - the mat output divided by the total mass.

Leg Stiffness (LS) - a measure for the interaction of lower limb muscles and joints to produce a jump.

Impulse - the product of the athlete's force and time during the take-off phase of a jump, measured in Newton-seconds (Ns).