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相关概念视频

Projectile Motion01:20

Projectile Motion

15.3K
An object thrown in the air follows a parabolic path under the influence of Earth's gravitational force. The motion of such an object is called projectile motion, and the object itself a projectile. The parabolic path followed by the projectile is called the trajectory. Some common examples of projectile motion are the launching of fireworks, a golf ball in the air, meteors entering the Earth's atmosphere, and the firing of bullets.
When an object falls under gravity and has no...
15.3K
Interpreting Run Charts01:25

Interpreting Run Charts

100
Run charts, essentially line graphs plotted over time, serve as fundamental yet effective tools for process analysis. They chronicle data sequentially, facilitating the identification of trends, shifts, or cyclical movements. This graphical representation is instrumental in determining whether a process is stable or exhibits signs of potential instability indicative of special cause variation. In the healthcare domain, run charts depict infection rates over time, enabling hospitals to monitor...
100
Construction of Frequency Distribution01:15

Construction of Frequency Distribution

7.7K
A frequency distribution table can be constructed using the steps given below.
First, make a table with two columns—one with the title of the data that needs to be organized, and the other column for frequency. [Draw a third column for tally marks if needed]. Then, take a look at the items given in the data set and decide if an ungrouped frequency distribution table or a grouped frequency distribution table would be more suitable. If there are large sets of different values, then it is...
7.7K
Projectile Motion: Example01:18

Projectile Motion: Example

9.7K
The theory of projectile motion is very useful for players of several sports to improve their performance. For example, a javelin thrower needs to throw their javelin in such a way that it travels as far as possible. The javelin thrower takes a short run-up to increase the initial speed of the javelin. The range of a projectile is at its maximum at a 45° angle so javelin throwers try to angle their throw as close to 45° as possible.
When we speak of the range (R) of a projectile on...
9.7K
Percentage Frequency Distribution00:57

Percentage Frequency Distribution

58.0K
A percentage frequency distribution, in general, is a display of data that indicates the percentage of observations for each data point or grouping of data points. It is a commonly used method for expressing the relative frequency of survey responses and other data. The percentage frequency distributions are often displayed as bar graphs, pie charts, or tables.
The process of making a percentage frequency distribution involves the following few steps: note the total number of observations;...
58.0K
Run Charts01:12

Run Charts

59
Run charts serve as an essential instrument for visualizing the performance of various processes over time, enabling the identification of trends and patterns crucial for quality improvement. These charts map out a series of data points chronologically, offering insights into the stability and efficiency of a process. A run chart's creation involves plotting data points on a graph, with the time intervals on the horizontal axis and the specific measurements on the vertical axis. For...
59

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Measuring Neural and Behavioral Activity During Ongoing Computerized Social Interactions: An Examination of Event-Related Brain Potentials
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基于工作负载数据的棒球投手间隔投程序

Michael M Reinold1,2, Brittany Dowling3, Glenn S Fleisig4

  • 1Chicago White Sox.

International journal of sports physical therapy
|March 5, 2024
PubMed
概括

对于棒球投手来说,一个新的间隔投程序 (ITP) 提供了一种数据驱动的手臂康复方法. 这种更新的ITP确保更安全,更逐渐地增加投工作负载,减少恢复比赛时的受伤风险.

关键词:
米·约翰 (Tommy John) 是一个著名的演员.在UCL,UCL就是UCL.棒球 棒球 棒球 棒球 棒球肘部扭矩 肘部扭矩长时间投.投球 投球 投球 投球 投球康复康复康复康复康复康复工作负载管理工作负载管理

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科学领域:

  • 运动医学 运动医学
  • 生物力学 生物力学
  • 棒球投球表现 棒球投球表现

背景情况:

  • 间隔投计划 (ITP) 是棒球投手在受伤或手术后康复的既定方法.
  • 传统的ITP依赖于事证据,缺乏现代生物机械和工作负载数据集成.
  • 了解投生物力学的进步需要更新,数据驱动的康复协议.

研究的目的:

  • 开发一个更新的间隔投篮程序 (ITP) 棒球投手使用生物力学和工作负载数据.
  • 将更新的ITP与历史程序进行比较,分析慢性工作负载和急性:慢性工作负载比率 (ACWR).

主要方法:

  • 根据投距离和分析工作负载 (每日,急性,慢性,ACWR) 从历史ITP的投时间表计算肘部扭矩.
  • 开发了一个新的ITP,旨在反映当前的投手投时间表,并逐渐增加ACWR.
  • 使用横截面研究设计来比较旧ITP和新ITP之间的工作负载参数.

主要成果:

  • 最初的ITP跨越了136天,最终的慢性工作量为15.0,并且在18%的时间内偏离了安全ACWR范围 (0.7-1.3),达到1.61.
  • 更新的ITP具有217天的时间表,较低的最终慢性工作负载为10.8,并且仅在9%的时间内偏离了安全ACWR范围,峰值为1.33.
  • 与传统程序相比,更新的ITP显示了慢性工作负载的逐步增加和安全ACWR范围之外的时间减少.

结论:

  • 新开发的ITP更好地符合现代棒球投手的投篮需求,并提供了更可控的慢性工作负载的进展.
  • 这一更新的ITP可以促进投手更安全,更有效地重返竞争,从而最大限度地减少挫折和重伤.
  • 该计划作为未来的基础,可能更短的时间ITPs为运动员从肩膀和肘部受伤恢复.