Yo Yo Intermittent Recovery Test Level 1

The Yo Yo Intermittent Recovery Test Level 1 (YIRT1) is a fitness test used to estimate a person’s VO2max (which is is the maximum capacity of an individual’s body to transport and use oxygen during exercise), which reflects the physical fitness or aerobic capacity of the individual. The YIRT1 is related to other fitness tests known as multi-stage fitness tests; tests that are incremental in the time it takes to cover 20 meters. These tests are performed to an audio recording of beeps (or bleeps). Along with the audio recording, you will need two parallel lines of cones spaced 20 meters from each other, and an assistant to help record the scores. The performers must run from one line of cones to the other and make it past the starting line cones in the allotted time (before the second beep). When a performer fails to do so he is given a warning. The second time he fails his test is over and the final level he attempted is recorded.

The benefit of performing the YIRT1 is its specificity to the demands on the aerobic energy system for soccer players. The test is performed at a relatively fast pace and in between each interval there is a 10 second rest period similar to the game of soccer. You can run the entire team through the test at the same time, cutting down on time spent testing.

A lot of teams will have a minimum requirement for players to reach; simply last through a certain level to pass. If the test is terminated at this point, it is considered a sub-maximal test. If the test continues on until all players have failed twice, then it is considered a maximal test and a VO2max score be estimated.

Here is a table of 51 levels along with information you may find useful:

level

speed stage

shuttle

level time

speed

speed

accumulated dist.

Vo2max

(s)

(km/hr)

(m/s)

(m)

(mL/min/kg)

1

1

1

14.4

10

2.78

40

36.74

2

2

1

12.5

11.5

3.19

80

37.07

3

3

1

11.1

13

3.61

120

37.41

4

3

2

11.1

13

3.61

160

37.74

5

4

1

10.7

13.5

3.75

200

38.08

6

4

2

10.7

13.5

3.75

240

38.42

7

4

3

10.7

13.5

3.75

280

38.75

8

5

1

10.3

14

3.89

320

39.09

9

5

2

10.3

14

3.89

360

39.42

10

5

3

10.3

14

3.89

400

39.76

11

5

4

10.3

14

3.89

440

40.10

12

6

1

9.9

14.5

4.03

480

40.43

13

6

2

9.9

14.5

4.03

520

40.77

14

6

3

9.9

14.5

4.03

560

41.10

15

6

4

9.9

14.5

4.03

600

41.44

16

6

5

9.9

14.5

4.03

640

41.78

17

6

6

9.9

14.5

4.03

680

42.11

18

6

7

9.9

14.5

4.03

720

42.45

19

6

8

9.9

14.5

4.03

760

42.78

20

7

1

9.6

15

4.17

800

43.12

21

7

2

9.6

15

4.17

840

43.46

22

7

3

9.6

15

4.17

880

43.79

23

7

4

9.6

15

4.17

920

44.13

24

7

5

9.6

15

4.17

960

44.46

25

7

6

9.6

15

4.17

1000

44.80

26

7

7

9.6

15

4.17

1040

45.14

27

7

8

9.6

15

4.17

1080

45.47

28

8

1

9.3

15.5

4.31

1120

45.81

29

8

2

9.3

15.5

4.31

1160

46.14

30

8

3

9.3

15.5

4.31

1200

46.48

31

8

4

9.3

15.5

4.31

1240

46.82

32

8

5

9.3

15.5

4.31

1280

47.15

33

8

6

9.3

15.5

4.31

1320

47.49

34

8

7

9.3

15.5

4.31

1360

47.82

35

8

8

9.3

15.5

4.31

1400

48.16

36

9

1

9.0

16

4.44

1440

48.50

37

9

2

9.0

16

4.44

1480

48.83

38

9

3

9.0

16

4.44

1520

49.17

39

9

4

9.0

16

4.44

1560

49.50

40

9

5

9.0

16

4.44

1600

49.84

41

9

6

9.0

16

4.44

1640

50.18

42

9

7

9.0

16

4.44

1680

50.51

43

9

8

9.0

16

4.44

1720

50.85

44

10

1

8.7

16.5

4.58

1760

51.18

45

10

2

8.7

16.5

4.58

1800

51.52

46

10

3

8.7

16.5

4.58

1840

51.86

47

10

4

8.7

16.5

4.58

1880

52.19

48

10

5

8.7

16.5

4.58

1920

52.53

49

10

6

8.7

16.5

4.58

1960

52.86

50

10

7

8.7

16.5

4.58

2000

53.20

51

10

8

8.7

16.5

4.58

2040

53.54

One thought on “Yo Yo Intermittent Recovery Test Level 1

  1. josue February 17, 2014 at 12:41 pm Reply

    Hello, I need to know the reference of the information described above, ie, the source or where it was taken. Greetings and good supply. just for my thesis I need to support the information.

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