article 2021 Prolonged Sojourn at Very High Altitude Decreases Sea-Level Anaerobic Performance, Anaerobic Threshold, and Fat Mass Robert K. Szymczak, Tomasz Grzywacz, Ewa Ziemann, Magdalena Sawicka, Radosław Laskowski JournalFrontiers in PhysiologyDOI10.3389/fphys.2021.743535Publication typeOriginal ResearchPopulationalpinists View on DOI ↗