article 2021 Energy availability during training camp is associated with signs of overreaching and changes in performance in young female cross-country skiers Oona Kettunen, Johanna K. Ihalainen, Olli Ohtonen, Maarit Valtonen, Jaakko Mursu, Vesa Linnamo JournalBiomedical Human KineticsDOI10.2478/bhk-2021-0030Publication typeOriginal PaperStudy typecross-sectional observation studyPopulationyoung female cross-country skiers View on DOI ↗