INTER test

At the beginning of the test, the player ran 20 meters (1st shuttle) from line A to line B, then turn and ran back to line A. Another 4 shuttles (and therefore a total of 6 shuttles) are performed according to the running speed given by the audio signal.

The authors stated that the running velocity is in accordance to the 20-meter shuttle run test by Leger et al. (2) and increased 1.5 km/h for every level, starting from 8.0 km/h.

After the 6st shuttle the audio CD will announce the change of direction part, which consists of (turning on line A), sprint around cone X and Y to line B, with clearing the line (line B) with one foot and a sprint back through line A. 45 seconds will be given to complete the change of direction part. 6 shuttles will then be completed by the player followed by the 25 m straight sprint (line A to line C).

The player will then walk back to line A. A total of 60 seconds are given to complete the sprint including the walking back. Level 2 will then commence. The level 1 is therefore completed in 5:12 minutes.

The test is terminated when the player is not able to follow the 20 m shuttle run pacer over three consecutive occasions (> 3 m from the desired line), or due to voluntarily stopping the test. I am guessing, the final score is the completed distance of the test, prior termination.

Total run and sprint distance in each level was ~432 meter in addition of walking back (50 meters). The total time to complete level 1.

The test seems to be reliable and valid (1).