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Relationship Between Yo-Yo Intermittent Endurance Test-Level 1 and Match Running Performance in Soccer: Still on the Right Path?

Introduction. The Yo-Yo Intermittent Endurance Test-Level 1 (Yo-Yo IR1) is considered a valuable measurement tool in assessing specific soccer endurance. However, there is a lack of recent research validating this test with regard to match running performance (MRP) in elite-level soccer. Material and Methods. The aim of this study was to evaluate the validity of Yo-Yo IR1 in predicting MRP during elite-level soccer matches. The participants were soccer players who competed in the highest-level Croatian soccer league (23.57 ± 2.84 years, 181.9 ± 5.17 cm, 78.36 ± 4.18 kg), and they were all tested using Yo-Yo IR1 in the middle of the season 2019/2020. The players’ MRP (n = 71) was measured using the Global Positioning System over one-half season, and included the total distance covered, the distance covered in different speed zones, accelerations and decelerations. The association between MRP and Yo- Yo IR1 was identified with Pearson’s correlation. Results. The results indicated that central midfielders and fullbacks achieved significantly higher results in Yo-Yo IR1 than forwards and central defenders (F-test: 29.80 ; p < 0.01 ; large effect size). Higher results in Yo-Yo IR1 were correlated with the match amount of (i) the total distance covered (r = 0.65) ; (ii) high-speed running (r = 0.42) ; (iii) high-intensity distance covered (r = 0.36) ; (iv) total accelerations (r = 0.37) ; and total decelerations (r = 0.42). Conclusions. The established associations between Yo-Yo IR1 and MRP in this study confirmed the validity of Yo-Yo IR1 in predicting MRP in professional soccer today.

aerobic fitness, specific endurance, field testing, football running demands

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