Application of inertial motion unit-based kinematics to assess the effect of boot modifications on ski jump landings : a methodological study

Kurpiers, Nicolas (avtor), Petrone, Nicola (avtor), Supej, Matej (avtor), Wisser, Anna (avtor), Hansen, Jakob (avtor), Kersting, Uwe (avtor)

Biomechanical studies of winter sports are challenging due to environmental conditions which cannot be mimicked in a laboratory. In this study, a methodological approach was developed merging 2D video recordings with sensor-based motion capture to investigate ski jump landings. A reference measurement was carried out in a laboratory, and subsequently, the method was exemplified in a field study by assessing the effect of a ski boot modification on landing kinematics. Landings of four expert skiers were filmed under field conditions in the jump plane, and full body kinematics were measured with an inertial motion unit (IMU) -based motion capture suit. This exemplary study revealed that the combination of video and IMU data is viable. However, only one skier was able to make use of the added boot flexibility, likely due to an extended training time with the modified boot. In this case, maximum knee flexion changed by 36° and maximum ankle flexion by 13°, whereas the other three skiers changed only marginally. The results confirm that 2D video merged with IMU data are suitable for jump analyses in winter sports, and that the modified boot will allow for alterations in landing technique provided that enough time for training is given.

• Jezik: Angleški jezik
• Ključne besede: skiing, kinematics, motion analysis, footwear, measurement systems, ski jump, landing
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FŠ - Fakulteta za šport
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 9 str.
• Številčenje: Vol. 20, iss. 13, art. 3805
• PID: 20.500.12556/RUL-133822
• UDK: 796.925
• ISSN pri članku: 1424-8220
• DOI: 10.3390/s20133805
• COBISS.SI-ID: 22045187
• Datum objave v RUL: 16.12.2021

Gradivo je del revije

• Naslov: Sensors
• Skrajšan naslov: Sensors
• Založnik: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 07.07.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: smučanje, kinematika, analiza gibanja, smučarski čevlji, meritve, smučarski skoki, doskok