绝对与绝对的定位差异. 精英学院的相对训练负载 足球运动员 足球运动员
Tom Douchet1,2,3, Christos Paizis1,2, Hugo Roche3
1INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences du Sport, F-21000, Dijon.
Journal of sports science & medicine
|June 9, 2023
概括
相对训练负载,这是对位置要求的解释,对于个性化足球训练至关重要. 绝对训练负载可以低估或高估不同球员位置的实际体力.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 足球表现分析 足球表现分析
背景情况:
- 传统的训练负载报告使用绝对值,无法考虑精英足球中的特定位置需求.
- 个性化训练负载对于优化球员发展和精英学院的表现至关重要.
研究的目的:
- 评估和比较精英学院足球运动员在各种比赛位置的绝对和相对训练负载.
- 为了确定绝对或相对训练负载指标是否更好地反映在赛季期间的位置需求.
主要方法:
- 利用全球定位系统 (GPS) 数据来监控24名精英学院足球运动员在五个位置.
- 计算的绝对训练负载指标 (总距离,中等速度,高速,冲刺距离,加速,减速).
- 通过将绝对负载与平均竞争比赛值进行正常化,推导出相对训练负载,每天相对于比赛日 (MD) 进行分析.
主要成果:
- 宽中场 (WM) 比中后卫 (CD) 显示出更大的绝对中等速度距离,但相对负载较低.
- 中后卫 (CD) 在特定的日子相对于比赛日,比其他位置的相对中等速度距离更高.
- 与CD相比,全背 (FB) 和WM的绝对高速距离较大,相对值没有显著差异.
结论:
- 绝对的训练负载可以低估对中后卫 (CD) 的要求,并高估宽中场 (WM) 的要求.
- 相对的培训负载通过考虑竞争的职位需求,提供了更准确的,个性化的培训负载评估.
- 建议在精英足球学院实施相对训练负载计算,以实现有效的训练个性化.
相关概念视频
Relative Motion Analysis - Acceleration
385
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...
385
Relative Motion Analysis using Rotating Axes - Acceleration
358
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...
358
Relative Motion Analysis using Rotating Axes
490
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...
490
Relative Frequency Distribution
11.0K
A relative frequency distribution is the proportion or fraction of times a value occurs in a data set. To find the relative frequencies, one can divide each frequency by the total number of data points in the sample. It is very similar to a regular frequency distribution, except that instead of reporting how many data values fall in a class, a relative frequency distribution reports the fraction of data values that fall in a class. These fractions or proportions are called relative frequencies...
11.0K
Motion of a Projectile
918
Projectile motion becomes evident when a player kicks the ball into the air. The launch angle, or the angle at which the ball is kicked, plays a crucial role in determining the trajectory of the projectile. As the ball soars through the air, influenced solely by gravity, its motion can be dissected into two independent velocity components: the horizontal and the vertical.
Horizontal motion, governed by the initial kick, maintains a constant velocity throughout the flight of the soccer ball.
Horizontal motion, governed by the initial kick, maintains a constant velocity throughout the flight of the soccer ball.
918
Relative Velocity in Two Dimensions
7.3K
Relative velocity is the velocity of an object as observed from a particular reference frame, or the velocity of one reference frame with respect to another reference frame. The concept of relative velocity can be used to describe motion in two dimensions. Consider a particle P and two reference frames S and S′. The position of the origin of S′ as measured in S is , the position of P as measured in S′ is , and the position of P as measured in S is , which can be evaluated by...
7.3K


