How to Measure Jumps with GymAware


Many practitioners use GymAware to measure power, velocity and jump height.

Jumps are popular because they are a quick, non-invasive exercise for checking the performance of the athlete.

First you need to design a test protocol that is easy to replicate and that reduces sources of variability. Once you have decided on a protocol you need to make sure your athletes understand it and that they stick to it. Otherwise you will lose the ability to compare results over time.

Hot Tip:

If you are measuring jump height make sure the athlete is completely ready to jump (standing tall with feet flat) before you press the START button.

Pressing the START button sets the zero for jump height calculation.

Distance above this position is considered to be jump height, distance below is dip.

There are a few things to consider in determining the protocol and setup you use:

  • Reducing the effect of technique
  • The skill and maturity of the athlete
  • The frequency of testing

A good way to reduce the effect of technique is to constrain arm swing by using a broom handle as a barbell. Have them place it across their shoulders.

This also makes a good point to attach the GymAware tether.

You can place the PowerTool on the floor beside the athlete so that the unit is clear of their feet.

NOTE: athlete needs to be instructed, and checked for, any tilting of the bar during the jump, as this can produce errors.

To avoid these errors the GymAware PowerTool can be mounted above the athlete using the PowerTool mounting bracket. The unit will detect that it is mounted upside down and will automatically compensate.

Pic of GymAware PowerTool mounted upside down above athlete

NOTE: We do not recommend relying solely on the magnets to secure the PowerTool above the athlete. The bracket can be screwed to the unit then securely mounted to the ceiling.

A GymAware unit shown in the roof mounted postion

You can source a mounting bracket direct from our Online shop here

Another quick option is to place the unit between the legs and attach the tether to a belt on the athlete.

This can make some athletes nervous at first, as they fear landing on the unit when jumping. Most athletes adjust and have no problems, as the natural way to jump is with feet shoulder width apart.

However, if you have concerns you can recess the PowerTool into a platform.