article 2025 9 pages Duration-dependent physiological, perceptual, and technical changes during a 2-hour low-intensity training session in female cross-country skiers Per-Øyvind Torvik, Guro Strøm Solli, Rune Kjøsen Talsnes, Øyvind Sandbakk JournalFrontiers in PhysiologyDOI10.3389/fphys.2025.1534858Publication typeOriginal ResearchPopulationfemale cross-country skiers View on DOI ↗