20.500.12556/RUL-125683 Application of wind tunnel device for evaluation of biokinetic parameters of running The aim of the study was the application of high-tech wind tunnel device to identify the changes in the biokinetic parameters of running performed on the specially designed treadmill. The research was carried out in the “Planica Nordic Centre—PNC” in the wind tunnel system, where the AirRunner Assault treadmill, which was equipped with four sensors measuring the vertical and horizontal ground reaction forces, was installed. To obtain biokinetic data, the runners performed the treadmill’s run under conditions of airflow directed at each participant’s back (backwind speeds +3 m/s and +5 m/s) and the chest (headwind speeds −5 m/s and −7 m/s). The runner’s speed was measured via image analysis using a DSLR camera and markers on the belt of the treadmill. Additionally, a high-speed camera synchronised to the force acquisition system was used to analyse the contact phase via comparison of foot placement and time series of the ground reaction forces. The contact phases of the running step were found to be longer than the flight phases, with their duration ranging from 0.15 to 0.20 s and the maximum forces at take-off were found to be greater than when running with the backwind. It should be noted that the application of high-tech devices wind tunnel and treadmill were found to be sufficiently accurate to perform kinetic measurements of running parameters in changing conditions, such as resistance and assistance (facilitating). running kinematics wind tunnel kinetics air resistance technique atletika tek na srednje proge vetrovni tunel Planica nordijski center meritve tehnika biokemija kinematika DSLR kamera true false true Angleški jezik Slovenski jezik Članek v reviji 2021-04-01 15:38:01 2021-04-01 15:38:03 2022-09-05 03:52:03 0000-00-00 00:00:00 2021 0 0 18 str. iss. 3, art. 505 Vol. 13 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 796.422.14 2073-8994 10.3390/sym13030505 56467203 RAZ_Sirok_Brane_2021.pdf RAZ_Sirok_Brane_2021.pdf 1 C9A8941B0CFC7F089EEDB7DBA4883DB5 638bd52857503e3b9e02a60d2b4e0274a999d06525742ca7022666d45d5a6164 996a4935-9af3-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154228 https://www.mdpi.com/2073-8994/13/3/505 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=141521 Fakulteta za strojništvo Fakulteta za šport 0 0 0