Reliability of Submaximal Yo-Yo Tests in 9- to 16-Year-Old Untrained Schoolchildren

Purpose : To examine the reliability of age-adapted submaximal Yo-Yo (Yo-Yo submax ) intermittent tests in untrained schoolchildren aged 9–16 years (n = 139; 72 boys and 67 girls) and within children with high and low percentage of body fat (%BF). Methods : Yo-Yo intermittent recovery level 1 children’s (YYIR1C), Yo-Yo intermittent endurance level 1 (YYIE1), and Yo-Yo intermittent endurance level 2 (YYIE2) tests were performed 7 days apart by 9-...