The Yo-Yo determines the maximum aerobic endurance of a player. The test is derived from the Shuttle Run Test.
With this test the participants run back and forth across the gym or training pitch between two lines/markers set twenty meters apart until the players fails to reach the mark at the ‘beep’ on three consecutive laps or shuttles. After each individual shuttle the players have an active recovery period of 10 seconds. For this, the player jogs up-and-down two cones set 5 meters apart.
This makes the test very different from the standard shuttle run and is why coaches feel it is more representative for rugby.
The test is usually performed indoor and the speed of the participants is determined by the interval between the audio beeps played on a CD player, cassette or laptop.
Background information on the YoYo test
The starting speed is 10 km/h and each minute the speed is increased by decreasing the interval between the beeps, see the table below for ‘beep’ interval times for each one minute stage.
Yo-yo intermittent Recovery Test protocol 1
Stage | Speed (km/hr) | Shuttle bouts (2x20m) | Split distance | Accumulated distance |
---|---|---|---|---|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | 10,0 12,0 13,0 13,5 14,0 14,5 15,0 15,5 16,0 16,5 17,0 17,5 18,0 18,5 19,0 | 1 1 2 3 4 8 8 8 8 8 8 8 8 8 8 | 40 40 80 120 160 320 320 320 320 320 320 320 320 320 320 | 40 80 160 280 440 760 1080 1400 1720 2040 2360 2680 3000 3320 3640 |
Players should pivot on the line at the moment of the beep (not quicker or slower). The test result is expressed in stages, you can score between 1/2 or 1 stage.
Yo-yo intermittent Recovery Test protocol 2
Stage | Speed (km/hr) | Shuttle bouts (2x20m) | Split distance | Accumulated distance |
---|---|---|---|---|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | 11,5 12,0 12,5 13,0 13,5 14,0 14,5 15,0 15,5 16,0 16,5 17,0 17,5 18,0 | 10 11 11 11 12 12 13 13 13 14 14 15 15 15 | 200 220 220 220 240 240 260 260 260 280 280 300 300 320 | 200 420 640 860 1100 1340 1600 1860 2120 2400 2680 2980 3280 3600 |
Considerations
Remember that the test results will have an impact on your Selection policy? Starting line-up? Training schedule? If you do not know why you test than do not test!
Also, test results need to be comparable with earlier or later test, be hesitant to run the test on the pitch when it is too soft.
Set the player targets? Than create an understanding how they should be able to improve. Just setting targets is not enough.
Practicalities
Timing is critical so it is important for the CD/MP3 or older audio cassette plays at the correct speed. We have found that CD players can be affected by pitch controls (set these at neural or off), MP3 playback speed can be affected by mismatch on CODEC sample rates. This is why we developed the Beeptest software that uses the computer clock for timing accuracy. The software helps you with administering the test, no need for notepads anymore just click on the player name and his score is recorded. You can set the software to Yoyo mode or the 20MSRT (or devise your own…)
Have a look at the website of Bitworks for more information.
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