{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,25]],"date-time":"2025-11-25T14:03:18Z","timestamp":1764079398814,"version":"3.44.0"},"reference-count":60,"publisher":"Human Kinetics","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,11,1]]},"abstract":"<jats:p><jats:italic><jats:bold>Purpose<\/jats:bold>:<\/jats:italic> To examine the reliability of age-adapted submaximal Yo-Yo (Yo-Yo<jats:sub>submax<\/jats:sub>) intermittent tests in untrained schoolchildren aged 9\u201316 years (n\u2009=\u2009139; 72 boys and 67 girls) and within children with high and low percentage of body fat (%BF). <jats:italic><jats:bold>Methods<\/jats:bold>:<\/jats:italic> Yo-Yo intermittent recovery level 1 children\u2019s (YYIR1C), Yo-Yo intermittent endurance level 1 (YYIE1), and Yo-Yo intermittent endurance level 2 (YYIE2) tests were performed 7 days apart by 9- to 11-, 12- to 13-, and 14- to 16-year-old children, respectively. Reliability was tested for Yo-Yo<jats:sub>submax<\/jats:sub> heart rate (HR<jats:sub>submax<\/jats:sub>), peak HR, and maximal distance. <jats:italic><jats:bold>Results<\/jats:bold>:<\/jats:italic> HR<jats:sub>submax<\/jats:sub> typical errors of measurement (TEM) in YYIR1C, YYIE1, and YYIE2 were 2.2% (1.7%\u20132.9%), 2.4% (1.9%\u20133.3%), 1.9% (1.6%\u20132.5%) and 2.4% (1.9%\u20133.3%), 2.4% (1.9%\u20133.2%), 1.9% (1.5%\u20132.4%) for girls and boys, respectively. HR<jats:sub>submax<\/jats:sub> intraclass correlation coefficient values were good to excellent (.62\u2013.87) in all age groups and in schoolchildren of different %BF. TEM for HR<jats:sub>submax<\/jats:sub> ranged from 2.1% to 2.3% in high and low %BF groups. Maximal distance intraclass correlation coefficients were excellent and TEM values ranged from 11% to 12% in both %BF groups. HR<jats:sub>submax<\/jats:sub> was moderately to largely associated (<jats:italic>r<\/jats:italic>\u2009=\u2009\u2212.46 to \u2212.64; <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.002) with Yo-Yo maximal distance across the age groups. <jats:italic><jats:bold>Conclusion<\/jats:bold>:<\/jats:italic> Yo-Yo<jats:sub>submax<\/jats:sub> tests are a reliable tool providing useful and sustainable aerobic performance testing in physical education, irrespective of individual %BF.<\/jats:p>","DOI":"10.1123\/pes.2017-0139","type":"journal-article","created":{"date-parts":[[2018,9,30]],"date-time":"2018-09-30T20:42:31Z","timestamp":1538340151000},"page":"537-545","source":"Crossref","is-referenced-by-count":7,"title":["Reliability of Submaximal Yo-Yo Tests in 9- to 16-Year-Old Untrained Schoolchildren"],"prefix":"10.1123","volume":"30","author":[{"given":"Susana Cristina Ara\u00fajo","family":"P\u00f3voas","sequence":"first","affiliation":[{"name":"University Institute of Maia"}]},{"given":"Peter","family":"Krustrup","sequence":"additional","affiliation":[{"name":"University of Southern Denmark"},{"name":"University of Exeter"}]},{"given":"Carlo","family":"Castagna","sequence":"additional","affiliation":[{"name":"University of Rome Tor Vergata"},{"name":"Italian Football Federation"}]},{"given":"Pedro Miguel Ribeiro","family":"da Silva","sequence":"additional","affiliation":[{"name":"University of Porto"}]},{"given":"Manuel J.","family":"Coelho-e-Silva","sequence":"additional","affiliation":[{"name":"University of Coimbra"}]},{"given":"Rita Liliana Mendes","family":"Pereira","sequence":"additional","affiliation":[{"name":"University of Porto"}]},{"given":"Malte Nejst","family":"Larsen","sequence":"additional","affiliation":[{"name":"University of Southern Denmark"}]}],"member":"100","reference":[{"issue":"3","key":"r1","series-title":"Eur J Appl Physiol","doi-asserted-by":"publisher","first-page":"871","DOI":"10.1007\/s00421-011-2039-4","article-title":"Aerobic fitness testing in 6- to 9-year-old children: reliability and validity of a modified Yo-Yo IR1 test and the Andersen test","volume":"112","author":"Ahler T","year":"2012","unstructured":"Ahler T, Bendiksen M, Krustrup P, Wedderkopp N. 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