The Yo-Yo Intermittent Recovery Test (YYIRT) is one of the most widely used fitness testing protocols in team field sports. It was developed to measure the ability of athletes to repeat high-intens…
Yo-Yo Intermittent Recovery Test Level 1
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Normative Yo-Yo Intermittent Recovery Level 1 and Yo-Yo Intermittent Endurance Level 1 test values of boys aged 9–16 years - ScienceDirect
Normative Yo-Yo Intermittent Recovery Level 1 and Yo-Yo Intermittent Endurance Level 1 test values of boys aged 9–16 years - ScienceDirect
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PDF] The Yo-Yo intermittent recovery test level 1 is reliable in young high-level soccer players
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