Dynamic Yo-Yo Test (DYY)

In addition to the six official yo-yo test versions as created by Jens Bangsbo, there are quite a few modified versions of the yo-yo test that have made changes to the original protocols for a specific purpose, such as this version for football (soccer) referees, which is designed specifically for testing football referees.

Football/soccer referees usually perform the Yo–Yo intermittent recovery level 1 test (YYIR1) as part of their fitness assessment, though this modified version which more closely replicates their movements around a pitch is sometimes used.

Diagram of the Dynamic Yo-Yo Test for Soccer Referees

Instead of a 20m out and back shuttle, the Dynamic Yo-Yo Test involves running to various points around a football pitch following cones marking 20 meter intervals (see diagram). The same audio recording as for the YoYo Intermittent Recovery Test Level 1 is used. Sixteen marker cones, alternating in color, are placed exactly 20 meters apart around a football pitch. If you are using a FIFA Competition Pitch (regulation size, 105x68m), then you can utilize the lines and marks on the field as a reference. Participants then run from marker to marker following the audio cues of the yo-yo intermittent test. After each 40 meters, there is a rest period of 10 seconds.

Reference times for referees

  men women
International and category 1 level 18-8 / 2,040 meters International and category 1: level 17-8 / 1,720 meters
Category 2 level 18-5 / 1,920 meters Category 2: level 17-5 / 1,600 meters
Lower categories level 18-1 / 1,760 meters Lower categories: level 16-8 / 1,400 meters

source: FIFA

Note: There does not seem to be any research published about this modified version of the yo-yo test. Due to the difficulty setting up the course for this test, we cannot see its use becoming widespread.

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