Serum levels of bone formation and resorption markers in relation to vitamin D status in professional athletes and physically active men during upper and lower body high-intensity exercise - Waldzinski, T.; Waldzinska, E.; Mieszkowski, J.; Niespodzinski, B.; Stankieiwcz, B.; Durzynska, A.; Brzezinska, P.; Kochanowicz, A. (28th Annual Congress of the European College of Sport Science, 4-7 July 2023, Paris, France, 2023)