article 2018 1 pages Uphill or Downhill Cross-Country Skiing Presentation of an Easy Applicable Performance Protocol for Youngsters Benedikt Gasser JournalJournal of Physical Fitness, Medicine & Treatment in SportsDOI10.19080/jpfmts.2018.01.555565Publication typeOriginal ResearchPopulationyoung cross-country skiers View on DOI ↗