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Application of wind tunnel device for evaluation of biokinetic parameters of running
Širok, Brane (Author), Gostiša, Jurij (Author), Sečnik, Matej (Author), Maćkała, Krzysztof (Author), Čoh, Milan (Author)

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Abstract
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 Air Runner 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).

Language:English
Keywords:running, kinematics, wind tunnel, kinetics, air resistance, technique
Work type:Article (dk_c)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2021
Number of pages:Str. 1-17
Numbering:Vol. 13, no. 3
UDC:796.422.14
ISSN on article:2073-8994
DOI:10.3390/sym13030505 This link opens in a new window
COBISS.SI-ID:56467203 This link opens in a new window
Views:211
Downloads:90
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Record is a part of a journal

Title:Symmetry
Shortened title:Symmetry
Publisher:MDPI
ISSN:2073-8994
COBISS.SI-ID:517592345 This link opens in a new window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:P2-0401
Name:Energetsko strojništvo

Funding Programme:Runner for participating in the experiment and the head of NC Planica Jelko Gros for allowing us to perform the experiments in the wind tunnel

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.04.2021

Secondary language

Language:Slovenian
Keywords:atletika, tek na srednje proge, vetrovni tunel, Planica, nordijski center, meritve, tehnika, biokemija, kinematika, DSLR kamera

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