Yo-Yo Test Modifications

In addition to the six official yo-yo test versions as created by Jens Bangsbo, there are quite a few adaptations of the yo-yo test that have made changes to the original protocols for a specific purpose. For all these examples, the timings are the same as one of the yo-yo test versions. The modifications include changing the distance run, the time of the test, the mode of movement, and the layout of the course.

Another Mod

Krešimir Šoš (Master of Kinesiology), conditioning coach for football club Dinamo Zagreb, created a variation of Yo-Yo test which he finds is very good for making distinction between aerobic and anaerobic work (point of deflection is more clear). Players change speed quicker and that makes anaerobic point of deflection much easier to see on a graph. The modification is based on the YYIR1 test, where the distance is a fixed variable, and time is decreasing. The players start at 8 km/hr and run 4 intervals (1 interval is consisted of 2x20m + pause 5 sec, as in the yo-yo endurance test). After every 4 intervals the test speeds increases by 1 km/hr.

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