Speed Reference at 3°, 6° and 9° step
Explanation of the 3 indices referred to an ideal athlete
In the Sprint and Gait Test parameters the speed of an 'ideal' athlete (the socalled 'super athlete') during the 3rd, 6th, and 9th step can be indicated. These are in fact the three most interesting moments of a sprint; important studies have proven that:

the speed of the 3rd stride is strongly related with the use of burst power

the 6thstride speed depends on the phase of transition between the burst power and elastic recovery

the 9thstride speed depends more on pure elasticity
Therefore the following indexes have been created and calculated as follows:
Esplosivity rate: real speed at 3rd step / ideal reference speed at 3rd step * 100
Transition rate: real speed at 6th step / ideal reference speed at 6th step * 100
Elasticity Rate: real speed at 9th step / ideal reference speed at 9th step * 100
Example: supposing that the three speeds of reference have been set at 6, 8, and 9 m/s, the athlete's sprint is taken into consideration and his indexes are shown:
Of course it is possible to change the three speeds of reference  as for any other secondary parameter  in any single test of a certain type or in general.