棒球中的Windup和Stretch投球生物力学与安全性和性能影响的比较
Glenn S Fleisig1, Jonathan S Slowik1, Charles B Kutz2
1American Sports Medicine Institute, Birmingham, Alabama, USA.
The American journal of sports medicine
|April 30, 2024
概括
从上风和拉伸的投球产生了类似的球速度和生物力学. 投手可以根据舒适度选择任何技术,因为性能和受伤风险不会受到显著影响.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 棒球表现分析 棒球表现分析
背景情况:
- 从历史上看,上风投球被认为增加了速度,而伸展则减少了盗球风险,但增加了手臂压力.
- 目前的观点表明,上风和拉伸技术之间在速度或应力上没有显著的差异.
- 仅掌握拉伸被认为比学习两种投球风格更简单.
研究的目的:
- 为了比较上风和伸展快球投球的生物力学.
- 为了研究两种投球技术之间的球速度,关节动力学,动力学和时间差异.
主要方法:
- 对221名健康棒球投手 (职业,大学,高中) 的生物力学数据进行分析.
- 利用运动捕捉技术,在上风和拉伸投球过程中记录动力学,时间和动力学参数.
- 使用双向重复测量ANOVA进行数据比较,对关键参数定义了临床重要差异最小值 (MCID).
主要成果:
- 对于大多数投手级别来说,上风和伸展之间的快球速度没有统计学上显著的差异.
- 大学投者显示,从上风开始,他们的速度略有增加,但不是临床上显著的.
- 技术之间观察到的微小动力学差异低于MCID,表明没有实质性的性能影响.
结论:
- 风起和拉伸投球产生类似的球速度,关节动力学和动力学.
- 投手可以选择两种技术,也可以根据个人喜好和舒适度选择使用拉伸.
- 在上风和拉伸之间做出选择似乎不会影响性能或增加受伤风险.
相关概念视频
Motion of a Projectile
790
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.
790
Stability of Equilibrium Configuration: Problem Solving
604
The stability of equilibrium configurations is an important concept in physics, engineering, and other related fields. In simple terms, it refers to the tendency of an object or system to return to its equilibrium position after being disturbed. The stability of an equilibrium configuration can be analyzed by considering the potential energy function of the system and examining its behavior near the equilibrium point.
Problem-solving in the context of the stability of equilibrium configuration...
Problem-solving in the context of the stability of equilibrium configuration...
604


