Numerical analysis of ski suits surface roughness effects on aerodynamics during the in-run phase of ski jumping [PDF]
Scientific ReportsThe study employs the shearstress transport (SST) turbulence model within a computational fluid dynamics (CFD) framework to investigate the influence of skijumping suit surface roughness on aerodynamic performance during the in-run phase.
Qianyun Zhang +2 more
exaly +5 more sources
Kinematic Chains in Ski Jumping In-run Posture [PDF]
Journal of Human Kinetics, 2013 Abstract The concept of kinematic chains has been systematically applied to biological systems since the 1950s. The course of a ski jump can be characterized as a change between closed and open kinematic chains. The purpose of this study was to determine a relationship between adjacent segments within the ski jumper’s body’s kinematic chain during
Miroslav Janura +2 more
exaly +4 more sources
Optimization of ski jumping in-run posture using computational fluid dynamics [PDF]
Scientific ReportsWhile aerodynamic optimization during ski jumping flight phases is well-studied, critical knowledge gaps persist regarding posture-fluid interactions in the in-run phase – particularly the dominance of drag dynamics over lift enhancement for speed ...
Wenhan Liu +3 more
doaj +2 more sources
Sensors, 2015 This study uses inertial sensors to measure ski jumper kinematics and joint dynamics, which was until now only a part of simulation studies. For subsequent calculation of dynamics in the joints, a link-segment model was developed. The model relies on the
Marko Munih, Munih Marko
exaly +3 more sources
Comparative analysis of energy system contributions and physiological profiles in snowboard slopestyle and snowboard cross [PDF]
PeerJBackground Slopestyle and snowboard cross are distinct snowboarding disciplines, each characterized by specific technical elements and differing competition dynamics. Examining the corresponding contributions of energy systems and physiological responses
Dae-hee Kim, Geonwoo Yang, Seung-Bo Park
doaj +3 more sources
Mid and long-term ecological impacts of ski run construction on alpine ecosystems [PDF]
Scientific Reports, 2020 Csilla Hudek +2 more
exaly +2 more sources
Associations Between Physiological Determinants and GNSS-Derived Technical Characteristics in Cross-Country Roller Skiing [PDF]
SensorsThis study aimed to examine how physiological determinants are associated with skiing technique and race performance in cross-country roller skiing by integrating motion data obtained via a Global Navigation Satellite System (GNSS) with laboratory-based ...
Shunya Uda +7 more
doaj +2 more sources
Impact of ski run construction on atypical channel head development
Science of the Total Environment, 2019 The development of ski infrastructure in mountainous areas has a significant impact on the development of erosion landforms and modification of existing landforms on slopes. The main purpose of our study was to determine the effects of ski run construction and artificial snowmaking on the development of channel heads and drainage lines as well as ...
Dominika Wrońska-Wałach +2 more
exaly +4 more sources
Joint kinematic responses of Olympic medallist skiers to repeated slalom runs [PDF]
Experimental PhysiologyThis case study aims to examine changes in the lower limb joint kinematic profile and performance stability induced by repeated ski runs in two world‐class alpine skiers.
Marine Alhammoud +11 more
doaj +2 more sources
The Snow-Friction of Freestyle Skis and Snowboards Predicted From Snow Physical Quantities
Frontiers in Mechanical Engineering, 2021 Previous research has shown that friction between ski and snow can vary substantially due to changes in snow conditions. The variation of friction affects the speed a freestyle skier or snowboarder (athlete) reaches during the in-run of a jump.
Fabian Wolfsperger +4 more
doaj +1 more source