Pose estimation and motion analysis of ski jumpers based on ECA-HRNet

W Bao, T Niu, N Wang, X Yang - Scientific Reports, 2023 - nature.com
Ski jumping is a high-speed sport, which makes it difficult to accurately analyze the technical
motion in a subjective way. To solve this problem, we propose an image-based pose …

Current situations and development tendencies for the body measurement technology in digital Skiing: A review

L Guan, X Zhang, X Cong, Z Zhang, Z Yang, N Li… - Measurement, 2024 - Elsevier
Currently, the utilization of micro-computer-aided technologies for the dynamic motion
capture of sports digitalization is increasing gradually. To obtain the accurate athletics digital …

Aerodynamic study of time-trial helmets in cycling racing using CFD analysis

F Beaumont, R Taiar, G Polidori, H Trenchard… - Journal of …, 2018 - Elsevier
The aerodynamic drag of three different time-trial cycling helmets was analyzed numerically
for two different cyclist head positions. Computational Fluid Dynamics (CFD) methods were …

[HTML][HTML] Aerodynamic investigation of tucked positions in alpine skiing

O Elfmark, KET Giljarhus, FF Liland, L Oggiano… - Journal of …, 2021 - Elsevier
The purpose of this investigation was to examine the aerodynamics of tucked positions in
competitive alpine skiing. To further our understanding of how a skier's position affects the …

Performance analysis in ski jumping with a differential global navigation satellite system and video-based pose estimation

O Elfmark, G Ettema, D Groos, EAF Ihlen, R Velta… - Sensors, 2021 - mdpi.com
This study investigated the explanatory power of a sensor fusion of two complementary
methods to explain performance and its underlying mechanisms in ski jumping. A differential …

Kinematic determination of the aerial phase in ski jumping

O Elfmark, G Ettema, P Jølstad, M Gilgien - Sensors, 2022 - mdpi.com
The purpose of this study was to find a generic method to determine the aerial phase of ski
jumping in which the athlete is in a steady gliding condition, commonly known as the 'stable …

[HTML][HTML] Assessment of the steady glide phase in ski jumping

O Elfmark, G Ettema, M Gilgien - Journal of Biomechanics, 2022 - Elsevier
The purpose of this investigation was to compare how key variables of the steady glide
phase relate to performance in the two hill sizes used in World Cup and Olympic …

Aerodynamic investigation of the inrun position in ski jumping

O Elfmark, G Ettema - Sports Biomechanics, 2024 - Taylor & Francis
This study aims to investigate the inrun position in ski-jumping, in search for factors
increasing the inrun speed without compromising the take-off. The inrun position of eight …

Effects of body angles on the aerodynamic characteristics in the flight period of ski jumping: A simulation study

X Li, X Wang, L Chen, T Zhao - Sports Biomechanics, 2023 - Taylor & Francis
The flight period of ski jumping involves aerodynamic considerations. Reasonable controls
and adjustments of in-flight body attitudes are beneficial to improve the aerodynamic …

Optimization of ski attitude for the in-flight aerodynamic performance of ski jumping

L Cao, Y Guo, X Li, L Chen, X Wang, T Zhao - Biology, 2022 - mdpi.com
Simple Summary Flight distance determines the score of ski jumping and thus should be
elongated in the competitions. Research has found that an analysis of aerodynamics is …