Circulating growth hormone, cortisol and testosterone in relation to vitamin D status: influence of lower and upper body wingate anaerobic test in elite artistic gymnasts. - Mieszkowski, Jan; Brzezińska, Paulina; Kochanowicz, Magdalena; Niespodziński, Bartłomiej; Grad, Rafał; Sawicki, Piotr; Antosiewicz, Jędrzej; Kochanowicz, Andrzej (BMC Sports Science, Medicine & Rehabilitation, 2025)