{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T03:30:06Z","timestamp":1781062206167,"version":"3.54.1"},"reference-count":44,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2023,8,27]],"date-time":"2023-08-27T00:00:00Z","timestamp":1693094400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Scandinavian Med Sci Sports"],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Laboratory tests are commonly performed by cross\u2010country (XC) skiers due to the challenges of obtaining reliable performance indicators on snow. However, only a few studies have reported reliability data for ski\u2010specific test protocols. Therefore, this study examined the test\u2013retest reliability of ski\u2010specific aerobic, sprint, and neuromuscular performance tests.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010nine highly trained XC skiers (26 men and 13 women, age: 22\u2009\u00b1\u20094\u2009years, V\u0307O<jats:sub>2max<\/jats:sub>: 70.1\u2009\u00b1\u20094.5 and 58.8\u2009\u00b1\u20094.4\u2009mL\u0387kg<jats:sup>\u22121<\/jats:sup>\u0387min<jats:sup>\u22121<\/jats:sup>, respectively) performed two test trials within 6\u2009days of a diagonal V\u0307O<jats:sub>2max<\/jats:sub> test, <jats:italic>n<\/jats:italic>\u2009=\u200927; skating graded exercise test to assess the second lactate threshold (LT<jats:sub>2<\/jats:sub>), <jats:italic>n<\/jats:italic>\u2009=\u200927; 24\u2010min double poling time trial (24\u2010min DP, <jats:italic>n<\/jats:italic>\u2009=\u200925), double poling sprint test (Sprint<jats:sub>DP1<\/jats:sub>, <jats:italic>n<\/jats:italic>\u2009=\u200927), and 1\u2010min self\u2010paced skating sprint test (Sprint<jats:sub>1\u2010min<\/jats:sub>, <jats:italic>n<\/jats:italic>\u2009=\u200926) using roller skis on a treadmill, and an upper\u2010body strength test (UB\u2010ST, <jats:italic>n<\/jats:italic>\u2009=\u200927) to assess peak power (<jats:italic>P<\/jats:italic><jats:sub>peak<\/jats:sub>) with light, medium, and heavy loads. For each test, the coefficient of variation (CV), intraclass correlation coefficient (ICC), and minimal detectable change (MDC) were calculated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>V\u0307O<jats:sub>2max<\/jats:sub> demonstrated good\u2010to\u2010excellent reliability (CV\u2009=\u20091.4%; ICC\u2009=\u20090.99; MDC\u2009=\u2009112\u2009mL\u0387min<jats:sup>\u22121<\/jats:sup>), whereas moderate\u2010to\u2010excellent reliability was found for LT<jats:sub>2<\/jats:sub> (CV\u2009=\u20093.1%; ICC\u2009=\u20090.95). Performance during 24\u2010min DP, Sprint<jats:sub>DP1<\/jats:sub>, and Sprint<jats:sub>1\u2010min<\/jats:sub> showed good\u2010to\u2010excellent reliability (CV\u2009=\u20091.0%\u20132.3%; ICC\u2009=\u20090.96\u20130.99). Absolute reliability for UB\u2010ST <jats:italic>P<\/jats:italic><jats:sub>peak<\/jats:sub> was poor (CV\u2009=\u20094.9%\u20137.8%), while relative reliability was excellent (ICC\u2009=\u20090.93\u20130.97) across the loads.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In highly trained XC skiers, sport\u2010specific aerobic and sprint performance tests demonstrated high test\u2013retest reliability, while neuromuscular performance for the upper body was less reliable. Using the presented protocols, practitioners can assess within\u2010 and between\u2010season changes in relevant performance indicators.<\/jats:p><\/jats:sec>","DOI":"10.1111\/sms.14473","type":"journal-article","created":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T03:57:55Z","timestamp":1693195075000},"page":"2482-2498","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Test\u2013retest reliability of ski\u2010specific aerobic, sprint, and neuromuscular performance tests in highly trained cross\u2010country skiers"],"prefix":"10.1111","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3689-2974","authenticated-orcid":false,"given":"Elias","family":"Bucher","sequence":"first","affiliation":[{"name":"Section for Elite Sport Swiss Federal Institute of Sport Magglingen  Magglingen Switzerland"},{"name":"Institute of Sport Sciences University of Lausanne  Lausanne 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