实现四重轴跳的动力学考虑:与世界级花样滑冰运动员使用跟踪数据进行三重轴跳的比较
1Department of Sport and Health Sciences, Toin University of Yokohama, Yokohama, Japan.
Sports biomechanics
|February 14, 2025
概括
顶级花样滑冰运动员的目标是获得更高的分数,增加四重轴 (4A) 跳跃的跳跃高度. 这与之前的研究相矛盾,表明了掌握困难跳跃的新策略.
科学领域:
- 生物力学 生物力学
- 体育科学 运动科学 运动科学
- 艺术滑冰 艺术滑冰是一项运动.
背景情况:
- 在花样滑冰中获得更高的分数往往取决于执行困难的跳跃,如四重跳.
- 以前的生物力学研究表明,随着更多的旋转跳跃,跳跃高度不会显著增加.
- 精英滑冰运动员用来掌握新的复杂跳跃的特定动态策略仍然不清楚.
研究的目的:
- 研究滑冰运动员在执行四重轴 (4A) 跳跃时使用的动力学策略.
- 分析两个精英滑冰运动员4A尝试的垂直高度,水平距离和速度.
- 为了比较4A尝试与三轴 (3A) 跳跃的生物力学.
主要方法:
- 利用冰域追踪系统收集动力学数据.
- 分析了垂直高度,水平距离,起飞速度,降落速度和高度与距离的比率.
- 专注于两名滑板运动员 (滑板运动员A和滑板运动员B),他们在比赛中尝试了4A.
主要成果:
- 两位滑冰运动员在他们的4A尝试中,与他们的3A尝试相比,都取得了更大的垂直高度.
- 滑冰运动员A的成功4A和滑冰运动员B的降级4A显示的垂直高度明显高于世界级滑冰运动员中的平均3A.
- 这表明了潜在的战略转变,即为4A执行最大限度地提高垂直高度.
结论:
- 这些发现表明,增加垂直跳跃高度是掌握四重轴 (4A) 的关键策略.
- 这与之前的生物力学研究相矛盾,该研究没有强调多旋转跳跃的垂直高度.
- 这些见解可以为旨在执行更困难的跳跃的花样滑冰运动员提供培训策略.
更多相关视频
08:27Three-Dimensional Finger Motion Tracking during Needling: A Solution for the Kinematic Analysis of Acupuncture Manipulation
Published on: October 28, 2021
2.7K
07:43In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
3.0K
相关概念视频
Absolute Motion Analysis- General Plane Motion
200
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
200
Relative Motion Analysis using Rotating Axes - Acceleration
318
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
Time differentiation is...
318
Relative Motion Analysis using Rotating Axes
442
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
442
Energy Diagrams - II
4.6K
Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
4.6K
Relative Motion Analysis - Acceleration
322
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
322
Relative Motion Analysis using Rotating Axes-Problem Solving
382
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
382
