Performance in the Yo-Yo Intermittent Recovery Test May Improve with Repeated Trials: Does Practice Matter?

Erika Zemková1,2, Martin Pacholek3

  • 1Department of Biological and Medical Sciences, Faculty of Physical Education and Sport, Comenius University in Bratislava, 81469 Bratislava, Slovakia.

Summary

Repeatedly taking the Yo-Yo Intermittent Recovery Test (YYIR1) significantly improves performance due to practice effects, not just training adaptations. This highlights the need to distinguish between test familiarity and genuine fitness gains when evaluating athlete progress.