技术变量的稳定性作为虚拟模拟赛事中的决定性绩效因素
Oriol Abellán-Aynés1,2, Francisco Segado1, Ruperto Menayo3
1Facultad de Deporte, UCAM Universidad Católica de Murcia, Murcia, Spain.
Sports biomechanics
|June 28, 2024
概括
水手技术的稳定性,而不仅仅是平均速度,显著影响了Optimist的航行性能. 在乐观主义者级别的竞争中,一致执行帆船变量是竞争成功的关键.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 帆船性能分析 帆船性能分析
背景情况:
- 乐观帆船是一个受欢迎的青年课程,需要复杂的技术.
- 了解影响绩效的因素对于培训和发展至关重要.
- 以前的研究通常集中在平均绩效指标上.
研究的目的:
- 调查乐观主义者帆船性能与船只处理和水手技术的稳定性之间的关系.
- 为了在乐观主义者类中比较不同技能水平 (顶部与底部) 之间的绩效指标.
- 确定成功逆风航行性能的关键决定因素.
主要方法:
- 32名乐观主义水手 (16名顶级,16名底级) 参加了一场半沉浸式帆船模拟器.
- 收集的数据包括瞬间速度,航向,弹杆角度,脚跟,杆角度和徒步旅行力度.
- 分析重点是测量变量的平均值,短期稳定性 (STS) 和长期稳定性 (LTS).
主要成果:
- 在顶级和底级水手之间观察到平均值,STS和LTS的显著差异.
- 在稳定性变量和平均速度之间发现了强烈的相关性 (r值0.3850.768).
- 航行变量的稳定性成为性能的一个重要决定因素,与单独的平均值不同.
结论:
- 技术稳定性,包括短期和长期的一致性,是Optimist帆船性能的一个关键因素.
- 专注于提高航行行动的一致性,而不仅仅是平均速度,可以提高竞争结果.
- 基于模拟器的分析为航行成功的生物力学决定因素提供了宝贵的见解.
相关概念视频
Modeling and Similitude
261
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
261
Typical Model Studies
354
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
354
Buoyancy and Stability for Submerged and Floating Bodies
1.8K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
1.8K
Pole and System Stability
275
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
275
Factors Affecting Activity Coefficient
786
The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size.
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...
786
Net Torque Calculations
9.1K
When a mechanic tries to remove a hex nut with a wrench, it is easier if the force is applied at the farthest end of the wrench handle. The lever arm is the distance from the pivot point (the hex nut in this case) to the person’s hand. If this distance is large, the torque is higher. Only the component of the force perpendicular to the lever arm contributes to the torque. Therefore, pushing the wrench perpendicular to the lever arm is more advantageous. If multiple people apply force to...
9.1K


