A Retrospective Study of the Yo-Yo IE2 Test: Can It be Used to Differentiate Between Different Levels of Futsal Referees?


Dixon, D. 2014. A Retrospective Study of the Yo-Yo IE2 Test: Can It be Used to Differentiate Between Different Levels of Futsal Referees? American Journal of Sports Science and Medicine. 2 (3), pp. 93-97.
AuthorsDixon, D.

Recently FIFA have called on referees to be fitter and to look like athletes therefore the aim of this research was to retrospectively examine the results from the fitness test results undertaken by Futsal referees operating in and below the National Futsal League. Futsal is the FIFA sanctioned form of 5 a side football and is controlled by two referees who operate up and down the touchlines either side of the pitch. Research has shown that the referees operating at an average intensity of 76% heart rate maximum (HRmax)HRMAX and spent more time sprinting and working at high intensity compared to referees in the 11 a side game. Currently FIFA recommend a. and as such the current 1000 m run, but this is not thought to match the actual movements or intensity of futsal referees or matches. As such the Yo-Yo IE2 test was introduced this season as it has been found to correlate highly with high intensity running (r=0.75; p<0.05). Twenty-two National group and 36 Non-national group futsal referees underwent pre-season testing which in-cooperating the Yo-Yo Intermittent Endurance Level 2 Fitness Test, a 40 m sprint test and a 70 m agility run test. The result showed a trivial effect size difference for Yo-Yo IE2 test distance (0.21), a small effect size difference for 40 m speed test and a extremely large effect size difference for 70 m agility run. A moderate to large correlation was found between age and Yo-Yo IE2 distance (r=-0.577) and BMI and Yo-Yo IE2 distance (r=-0.452). Therefore the Yo-Yo IE2 can be used to differentiate between different levels of futsal referees and it may be possible to use the test to identify those referees who show the fitness attributes for further development.

JournalAmerican Journal of Sports Science and Medicine
Journal citation2 (3), pp. 93-97
PublisherScience and Education Publishing
Accepted author manuscript
Web address (URL)http://dx.doi.org/10.12691/ajssm-2-3-5
Publication process dates
Deposited13 Oct 2015
Accepted17 Jan 2014
Accepted17 Jan 2014
Copyright information© 2014 Science and Education Publishing
Permalink -


Download files

Accepted author manuscript
License: CC BY

  • 99
    total views
  • 148
    total downloads
  • 1
    views this month
  • 1
    downloads this month

Export as