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Normative Yo-Yo Intermittent Recovery Level 1 and Yo-Yo Intermittent Endurance Level 1 test values of boys aged 9–16years - Journal of Science and Medicine in Sport
The Complete Guide to the Yo-Yo Test
Yo Yo Test - Test Procedure
Yo-Yo Intermittent Recovery Test - Ultimate Soccer Fitness | 5-a-side.com
Yo-Yo Intermittent Recovery Test - Ultimate Soccer Fitness | 5-a-side.com
Yo-Yo Intermittent Recovery Test - Ultimate Soccer Fitness | 5-a-side.com
Yo-Yo Intermittent Recovery Test Level 1 - Science for Sport
Assistant Referee Intermittent Endurance Test (ARIET)
Dynamic Yo Yo test for football refeerees - Dutch Referee Blog