For instance, in the YYIR-1 specification stage 2 is at TopEndSports stated to be speed level 8. The common reference to the speed-levels and number of runs at each speed level can be found on .īut beware! The tables may not be entirely correct. It is conducted the same way as the YYIR tests, but now the recovery period is dropped from 10 to just 5 seconds.Īlso the YYIE tests comes in two flavours, level-1 and level-2. There exists an endurance variant of the YYIR test also, called the Yo-Yo Intermittent Endurance (YYIE) test. YYIR Level-2 is intended only for elite athletes, while level-1 can be used at all skill levels where the standard Yo-Yo test is used today. The difference is the starting speed level. The YYIR test comes in two standard versions level-1 and level-2. The second time she misses she is out, and her final level/run, time or total distance is recorded. When a player miss the starting or ending line she is given a warning.
The YYIR test requires some sort of timing signal, normally a CD with pre-recorded beeps at correct timing intervals, or a piece of software running on e.g. After each 40m run, the athlete has a 10 second active break where she jogs or walks around the recovery cone before the next run. In the YYIR test the standard 20m setup is extended with a 5m recovery area in front of the starting line. The Yo-Yo IR tests have shown to be a more sensitive measure of changes in performance than maximum oxygen uptake has an excellent article in Sports Medicine where they prove that for football: The Yo-Yo intermittent recovery (YYIR) test is a variation of the yo-yo test specifically designed for testing athletes in intermittent sports like football.
The traditional continuous-run yo-yo-, bleep-, or beep-test hence mainly exercise your aerobic endurance. However, a decent aerobic endurance is also the baseline for the anaeorob counterpart. As a rule-of-thumb you may say that the shorter inteval and higher intensity the activity consists of, the more important is the anaerob component. In most standardized tests you will test a combination of the two endurance types. The efficient removal of lactic acid is required to limit muscle fatigue.Ī brief description of the differences between aerobic and anaeobic endurance can also be found on There is often insufficient time to recover completely after each sprint, leading to the accumulation of lactic acid. Utilizes anaerobic glycolysis in which lactic acid is produced. High intensity exercise stresses the anaerobic energy system.Įach short burst of high intensity exercise depletes the stores of creatine phosphate and Your ability to maintain short bursts of high power and to repeat high-intensity movements for a prolongued period is a measure of your anaerobic endurance.
In a football mach the activity is more like a series of max-intesity sprints with recovery pauses inbetween. It's an easy test to conduct, and is widely used for estimating an athletes maximum oxygen uptake.īut is it really testing the relevant endurance parameters for a soccer player?Ĭontinuous running at the same or increasing speed until exhaustion mainly test the aerobic endurance of the candidate.Įven if improving your aerobic endurance is proven to have benefits also on the football field, the anaerobic endurance may be even more important. Introduced already in school, many coaches bring this test with them into football training. We are all familiar with the traditional Yo-Yo test or bleep-test. The rest of this page is however equally relevant for American football, rugby, hockey.
For those not defining football as a game played primarily with your feet, but as handball with an ill-shaped ball.)