Fatigue inde​​​x (20 CMJ)

We are able to measure th​​e fatiguing effect and the level of fatigue experienced by an athlete during 20 continuous countermovement jumps (CMJ). Measuring the fatigue experienced during this 20 CMJ test is very relevant to any continuous plyometric type exercise such as sprinting. Another important factor to consider is the deterioration of posture over the 20 CMJs which could indicate potential injury mechanisms in the athlete.

What does the test involve?

This is a jump testing analysis that takes place on two force plates. Therefore, each leg is on its own force plate allowing for measurements of the symmetry of force application during the jump. You will be asked to complete a single series of 20 continuous CMJs. During these jumps your force application onto the force plate will be measured. The goal is to jump as high as possible throughout the length of this test.

What will you receive?

You will receive a report that indicates the results from the testing completed. These results will include the fatigue index which gives an indication fatigue experienced over the course of the 20 CMJs. Furthermore, video stills of any postural fatigue that may take place will be included.

How long will it take?

This is a very short test. If you come to the laboratory after already completing your own warm up session the testing should take between 5 and 10 minutes. If a group/team comes for testing, between 20 and 25 athletes can be tested within an hour.

What should you do/bring?

You will need to bring comfortable training clothes and shoes. Furthermore it is suggested that you do not participate in any strenuous training 24 hours prior to the test, unless the goal of the testing is to determine the muscular fatigue induced by the training session. We also suggest that you complete a warm up session prior to arriving at the lab in order to obtain the maximal performance during this test session.​