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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Relationship Between Pitcher Fatigue and Medial Elbow Torque in Baseball Pitchers: A Simulated Game Analysis
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Relationship Between Pitcher Fatigue and Medial Elbow Torque in Baseball Pitchers: A Simulated Game Analysis

机译：棒球投手投手疲劳与内侧肘部扭矩之间的关系：模拟博弈分析

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Objectives: The incidence of overuse injury to the elbow in baseball pitchers continues to rise, despite exhaustive efforts at pitch count regulations and emphasis on proper throwing mechanics. The goal of this study was to determine if the medial elbow experiences increased torque levels as the pitcher fatigues through the course of a simulated game. Methods: Competitive baseball pitchers were recruited for this simulated game study. Medial elbow torque was assessed using a validated mobile sensor that recorded medial elbow torque during the throwing motion. A radar gun was used to capture pitch velocity for each recorded pitch. Each pitcher completed a simulated game consisting of 6 innings and a standardized pitching scheme of fastballs, curveballs, and change-ups. Visual analog scores (VAS) measuring fatigue were recorded in between each inning. In total, each pitcher threw 90 pitches. Data was recorded every pitch to include ball velocity, medial elbow torque, arm speed, arm rotation, and arm slot. Results: A total of 11 pitchers (average age 17.6 years; range 15-20 years) completed the study. No adverse outcomes were noted with use of the mobile sensor. VAS scores increased 0.716 points per inning pitched (p<0.001). Medial elbow torque also was found to increase with successive innings, with an increase of 0.836 Nm each inning (p<0.001), while average pitch velocity was found to decrease as the game progressed (0.28 mile per hour decrease per inning; p<0.001). Fastballs generated the highest amount of medial elbow torque. There were no differences found in arm rotation or arm speed as the game progressed. However, the arm slot was found to decrease with each successive inning (0.731 degree decrease per inning; p<0.001). Conclusion: In this simulated game analysis, pitchers were noted to experience increase fatigue after each successive inning. While the average fastball velocity decreased from inning-to-inning, the medial elbow torque was found to increase, signifying a possible risk factor for overuse injury to the medial elbow.
机译：目标：尽管在球场计数规则上进行了详尽的努力并强调正确的投掷机制，但棒球投手中肘部过度使用受伤的发生率仍在上升。这项研究的目的是确定随着模拟游戏过程中投手的疲劳，内侧肘是否承受增加的扭矩水平。方法：本模拟游戏研究招募了竞争性棒球投手。使用经过验证的移动传感器评估肘关节内侧扭矩，该传感器记录在投掷运动过程中的肘关节内侧扭矩。使用雷达枪捕获每个记录的音高的音高速度。每个投手都完成了一个由6局组成的模拟游戏，并制定了快球，弯球和换人的标准投球方案。在每局之间记录测量疲劳的视觉模拟评分（VAS）。每个投手总共投掷了90个投球。记录每个螺距的数据，包括球速度，内侧肘部扭矩，手臂速度，手臂旋转和手臂缝隙。结果：总共11个投手（平均年龄17.6岁;范围15-20岁）完成了研究。使用移动传感器未发现不良后果。每个局点的VAS分数增加0.716分（p <0.001）。还发现内侧肘部扭矩随连续局而增加，每局增加0.836 Nm（p <0.001），而平均俯仰速度随比赛的进行而降低（每局每小时减少0.28英里; p <0.001 ）。快球产生最大的内侧肘关节扭矩。随着游戏的进行，手臂旋转或手臂速度没有差异。然而，发现臂槽随着每个连续的局而减少（每局减少0.731度; p <0.001）。结论：在此模拟博弈分析中，注意到投手在每局连续比赛后都会感到疲劳加剧。虽然平均快球速度从一局到另一局下降，但发现内侧肘部扭矩增加，这表明过度使用内侧肘部会造成伤害。

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