Yo-Yo IR1 · level 9 of 17
Yo-Yo IR1 level 9
At level 9 of the Yo-Yo IR1, the required speed is 16 km/h: 8 runs of 19 s each. The level lasts 2 min 32 s; when it ends you have covered 1 720 m in 14 min 14 s. Completing it in full credits you with a MAS of 16 km/h, roughly 51 ml/min/kg of VO₂max.
This is a trained runner’s level. Holding 16 km/h in a shuttle, with a turn every 19 seconds, takes a solid MAS and a clean turning technique.
The previous level, 8, was run at 15.5 km/h. The next one, 10, moves to 16.5 km/h. On this test the gap between two levels is small in speed and large in feel, because fatigue carries over from one level to the next.
Level 9 in the table
| Level | Speed | Runs | s / shuttle | Level duration | Cumulative time | Cumulative distance |
|---|---|---|---|---|---|---|
| 14 | 14.5 | 8 | 19.93 | 2 min 39 s | 2 min 39 s | 320 |
| 15 | 15 | 8 | 19.60 | 2 min 37 s | 5 min 16 s | 640 |
| 16 | 15.5 | 8 | 19.29 | 2 min 34 s | 7 min 51 s | 960 |
| 17 | 16 | 8 | 19 | 2 min 32 s | 10 min 23 s | 1 280 |
| 18 | 16.5 | 8 | 18.73 | 2 min 30 s | 12 min 52 s | 1 600 |
| 19 | 17 | 8 | 18.47 | 2 min 28 s | 15 min 20 s | 1 920 |
| 20 | 17.5 | 8 | 18.23 | 2 min 26 s | 17 min 46 s | 2 240 |
Frequently asked questions
What MAS does level 9 of the Yo-Yo IR1 give?
A MAS of 16 km/h, provided you complete the level. If you stop midway, the scoring rule credits the last full level, so 15.5 km/h (level 8).
How long does level 9 last?
2 min 32 s, i.e. 8 runs of 19 s. From the start of the test that makes 14 min 14 s of running.
What pace per kilometre is this level?
16 km/h is 3:45 /km. That is the pace you would hold on a track, without the turns: in a shuttle the same figure costs more.