FEATURES OF RHEOVASOGRAPHIC PARAMETERS OF THE TIBIA IN VOLLEYBALL PLAYERS OF A HIGH LEVEL OF SKILL OF THE YOUTH AGE. - Stepanenko IО; Sarafyniuk LA; Lezhnova OV; Ivanytsia AO; Piliponova VV (Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego, 2023)