Antonacci Christopher, Atlee Thomas R, Chalmers Peter N, Hadley Christopher, Bishop Meghan E, Romeo Anthony A, Erickson Brandon J
Rothman Orthopaedic Institute, New York, New York, USA.
Teels Baseball, Wyckoff, New Jersey, USA.
Orthop J Sports Med. 2020 Jun 17;8(6):2325967120927939. doi: 10.1177/2325967120927939. eCollection 2020 Jun.
Pitching velocity is one of the most important metrics used to evaluate a baseball pitcher's effectiveness. The relationship between age and pitching velocity after a lighter ball baseball training program has not been determined.
PURPOSE/HYPOTHESIS: The purpose of this study was to examine the relationship between age and pitching velocity after a lighter ball baseball training program. We hypothesized that pitching velocity would significantly increase in all adolescent age groups after a lighter baseball training program, without a significant difference in magnitude of increase based on age.
Cohort study; Level of evidence, 2.
Baseball pitchers aged 10 to 17 years who completed a 15-week training program focused on pitching mechanics and velocity improvement were included in this study. Pitchers were split into 3 groups based on age (group 1, 10-12 years; group 2, 13-14 years; group 3, 15-17 years), and each group trained independently. Pitch velocity was assessed at 4 time points (sessions 3, 10, 17, and 25). Mean, maximum, and mean change in pitch velocity between sessions were compared by age group.
A total of 32 male baseball pitchers were included in the analysis. Mean/maximum velocity increased in all 3 age groups: 3.4/4.8 mph in group 1, 5.3/5.5 mph in group 2, and 5.3/5.2 mph in group 3. While mean percentage change in pitch velocity increased in all 3 age groups (group 1, 6.5%; group 2, 8.3%; group 3, 7.6%), the magnitude of change was not significantly different among age groups. Program session number had a significant effect on mean and maximum velocity, with higher mean and maximum velocity seen at later sessions in the training program ( = .018). There was no interaction between age and program session within either mean or maximum velocity ( = .316 and .572, respectively).
Age had no significant effect on the magnitude of increase in maximum or mean baseball pitch velocity during a velocity and mechanics training program in adolescent males.
投球速度是评估棒球投手效能的最重要指标之一。在进行轻量球棒球训练计划后，年龄与投球速度之间的关系尚未确定。
目的/假设：本研究的目的是探讨在轻量球棒球训练计划后年龄与投球速度之间的关系。我们假设，在进行轻量棒球训练计划后，所有青少年年龄组的投球速度都会显著提高，且基于年龄的提高幅度无显著差异。
队列研究；证据等级，2级。
本研究纳入了10至17岁完成了一项为期15周、专注于投球力学和速度提升训练计划的棒球投手。投手根据年龄分为3组（第1组，10 - 12岁；第2组，13 - 14岁；第3组，15 - 17岁），每组独立训练。在4个时间点（第3、10、17和25次训练课）评估投球速度。按年龄组比较各训练课之间投球速度的平均值、最大值及平均变化。
共有32名男性棒球投手纳入分析。所有3个年龄组的平均/最大速度均有所增加：第1组为3.4/4.8英里/小时，第2组为5.3/5.5英里/小时，第3组为5.3/5.2英里/小时。虽然所有3个年龄组的投球速度平均百分比变化均有所增加（第1组为6.5%；第2组为8.3%；第3组为7.6%），但各年龄组的变化幅度无显著差异。训练课次数对平均速度和最大速度有显著影响，训练计划后期的训练课平均速度和最大速度更高（P = 0.018）。在平均速度或最大速度方面，年龄与训练课次数之间均无交互作用（分别为P = 0.316和P = 0.572）。
在青少年男性的速度和力学训练计划中，年龄对棒球最大投球速度或平均投球速度的增加幅度无显著影响。
