Figure 3. Comparison of referees BMI vs. Distance travelled during YO – YO IE2 Test for both National and Non National Groups

From

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

D. Dixon

American Journal of Sports Science and Medicine. 2014, 2(3), 93-97 doi:10.12691/ajssm-2-3-5