雷达传感器数据适用于准确的线性冲刺建模
Daniel Geneau1,2, Patrick Cormier1,2, Ming-Chang Tsai1
1Canadian Sport Institute Pacific, Victoria, BC V9E 2C5, Canada.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
雷达传感器通过准确捕获速度数据来改善冲刺性能分析. 使用先进的建模技术,如sigmoid和多项式函数,可以提高运动员的力-速度概况的可靠性.
科学领域:
- 体育科学 运动科学 运动科学
- 生物力学 生物力学
- 竞技表现分析 竞技表现分析
背景情况:
- 准确的线性冲刺建模对于评估运动员的力量,功率和速度能力至关重要.
- 雷达传感器提供精确的速度数据,对于可靠的力-速度 (FV) 配置文件至关重要.
- 这项研究研究了将雷达传感器数据与各种冲刺建模技术相匹配,以提高FV配置的准确性.
研究的目的:
- 用雷达收集的速度数据来评估不同冲刺建模技术的适用性.
- 为了比较各种建模方法对衍生力-速度指标的影响.
- 确定最佳的建模策略,以增强冲刺绩效分析.
主要方法:
- 47名大学运动员进行了两次40米冲刺,雷达传感器记录了速度数据.
- 评估了五种建模方法:三种已确定的方法,一个三度多项式和一个西格函数.
- 使用根平均平方误差 (RMSE) 和确定系数 (r2) 评估适用性;使用ANOVA比较FV指标.
主要成果:
- 在测试模型中,在适合性和大多数FV指标中发现了显著的差异 (p < 0.001).
- 与其他方法相比,西格形和多项式函数与雷达收集的速度数据相匹配更好.
- 这些发现突出了建模技术对衍生的冲刺绩效指标准确性的影响.
结论:
- 雷达传感器与适当的建模技术相结合,可显著提高冲刺性能分析的准确性.
- 立方体和多项式函数为使用雷达速度数据进行FV分析提供了更高的准确性.
- 培训师和研究人员应注意选择的建模方法,以确保在研究中得到一致和可比的结果.
更多相关视频
相关概念视频
01:20Calibration Curves: Linear Least Squares
A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...
For data that follow a straight line, the standard method for fitting is the linear...
01:12Measuring Acceleration Due to Gravity
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
01:18Distance Measurements by Taping
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
01:29Application of Linearization and Approximation
A drone flying through complex terrain often relies on more than one sensing method to estimate small changes in altitude. Along with direct measurements, air pressure provides a useful indirect indicator of vertical movement. Atmospheric pressure decreases as altitude increases, and this relationship is commonly described using an exponential model. Although accurate, converting pressure measurements into altitude values requires calculations that are too complex to perform repeatedly during...
01:30Vector Functions and Motion: Problem Solving
Accurate position tracking is fundamental to the safe and effective operation of unmanned aerial vehicles (UAVs), particularly during precision maneuvers near complex structures. In this scenario, a drone is programmed to perform a high-precision inspection of a vertical structure, starting at position ((x, y, z) = (3, 0, 0)), with an initial velocity oriented in the positive z-direction. The trajectory of the drone is governed by a time-dependent acceleration function a(t), which is predefined...