Results 121 to 130 of about 258,256 (182)
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Ski jumping boots limit effective take-off in ski jumping
Journal of Sports Sciences, 2001In this study, we measured the vertical and horizontal take-off forces, plantar pressures and activation patterns of four muscles (vastus lateralis, gluteus maximus, tibialis anterior, gastrocnemius) in 10 ski jumpers in simulated laboratory conditions when wearing either training shoes or ski jumping boots. We found significant differences in vertical
Paavo V Komi
exaly +3 more sources
Underweight in Ski Jumping: The Solution of the Problem
International Journal of Sports Medicine, 2006Underweight is becoming increasingly prevalent in many sports. Among world class ski jumpers, the body mass index BMI has decreased by 4 units since 1970. The BMI ignores different body properties of individuals. Particular care should be taken in groups with unusual leg length to avoid classifying them inappropriately as thin or overweight (WHO).
W, Müller +3 more
exaly +3 more sources
Biomechanics in ski jumping: A review
European Journal of Sport Science, 2001{PRIVATE}Biomechanical research in ski jumping has a long tradition and is determined by the work of a few important research groups. Biomechanical studies proceed nearly exclusively within three large areas (a) field studies of hill jumps, (b) laboratory studies of simulation jumps, and (c) computer simulation of the flight phase.
Hermann Schwameder, Erich Müller
exaly +2 more sources
Take-off aerodynamics in ski jumping
Journal of Biomechanics, 2001The effect of aerodynamic forces on the force-time characteristics of the simulated ski jumping take-off was examined in a wind tunnel. Vertical and horizontal ground reaction forces were recorded with a force plate installed under the wind tunnel floor. The jumpers performed take-offs in non-wind conditions and in various wind conditions (21-33 m s(-1)
Mikko Virmavirta, Paavo V Komi
exaly +3 more sources
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2017
Although ski jumping is a widely investigated sport, competitions and training sessions are rarely supported by state-of-the-art technology. Supporting technologies could focus on a continuous velocity determination and visualization for competitions as well as on an analysis of the velocity development and the jump length for training sessions. In the
Bjoern Eskofier +2 more
exaly +2 more sources
Although ski jumping is a widely investigated sport, competitions and training sessions are rarely supported by state-of-the-art technology. Supporting technologies could focus on a continuous velocity determination and visualization for competitions as well as on an analysis of the velocity development and the jump length for training sessions. In the
Bjoern Eskofier +2 more
exaly +2 more sources
1993
This article is a retrospective report on the injuries of competition ski jumps in Sapporo, Japan during the period between 1985 and 1990. In these five seasons, 56 official ski jumping games, including the world cup games, were held in Sapporo. The total number of jumps amounted to 7831 with 71 jumps with falls for a fall rate of 9.07 per 1000 jumps ...
T Yamamura, M Sugawara, S Ishii
exaly +2 more sources
This article is a retrospective report on the injuries of competition ski jumps in Sapporo, Japan during the period between 1985 and 1990. In these five seasons, 56 official ski jumping games, including the world cup games, were held in Sapporo. The total number of jumps amounted to 7831 with 71 jumps with falls for a fall rate of 9.07 per 1000 jumps ...
T Yamamura, M Sugawara, S Ishii
exaly +2 more sources
Ski Jumping Takeoff in a Wind Tunnel With Skis
Journal of Applied Biomechanics, 2011The effect of skis on the force–time characteristics of the simulated ski jumping takeoff was examined in a wind tunnel. Takeoff forces were recorded with a force plate installed under the tunnel floor. Signals from the front and rear parts of the force plate were collected separately to examine the anteroposterior balance of the jumpers during the ...
Virmavirta Mikko +2 more
openaire +6 more sources
Sports Biomechanics, 2023
The flight period of ski jumping involves aerodynamic considerations. Reasonable controls and adjustments of in-flight body attitudes are beneficial to improve the aerodynamic performance of athletes, thus obtaining a longer flight distance.
Xiong Li +3 more
semanticscholar +1 more source
The flight period of ski jumping involves aerodynamic considerations. Reasonable controls and adjustments of in-flight body attitudes are beneficial to improve the aerodynamic performance of athletes, thus obtaining a longer flight distance.
Xiong Li +3 more
semanticscholar +1 more source
Sports Biomechanics, 2023
The stable flight posture that affects sports performance during flight is usually formed by the multiple angles of the athlete—ski posture. At present, research on the flight phase is mainly based on the single-factor impact analysis based on ...
Jin Yu +6 more
semanticscholar +1 more source
The stable flight posture that affects sports performance during flight is usually formed by the multiple angles of the athlete—ski posture. At present, research on the flight phase is mainly based on the single-factor impact analysis based on ...
Jin Yu +6 more
semanticscholar +1 more source
European Journal of Sport Science, 2022
The aim of this paper is to propose a hybrid framework that combines a data-driven pose estimation with model-based force calculation in order to predict the ski jumping force from a recorded motion video. A skeletal model consisting of five joints (ear,
Yunhyoung Nam +4 more
semanticscholar +1 more source
The aim of this paper is to propose a hybrid framework that combines a data-driven pose estimation with model-based force calculation in order to predict the ski jumping force from a recorded motion video. A skeletal model consisting of five joints (ear,
Yunhyoung Nam +4 more
semanticscholar +1 more source