https://i.imgur.com/JQYFyVX.jpg
抱歉喔，我说不管不代表没有资料
刚好前几天就有一篇英文报导在谈投球计时跟受伤的相关
https://theathletic.com/4465791/2023/05/02/mlb-pitch-clock-velocity-injury/?amp=1
MLB’s pitch clock is a success, but some still fear an injury reckoning is coming
标题稍微有些杀人，所以我们还是细看内文比较好
里面访问了一些球团相关人士，有担忧的有觉得不影响的，所以目前质性意见上还有分歧，那我们就纯粹来看数据的情况
首先他提到第一点，投手投球速度现在还是在上升的，且每局投球局数也更多，但相对的速球用量却减少
那这些改动的确有人反应会导致投手受伤，但这跟投球计时的相关性又如何呢？
The rate of injuries at the minor-league level actually declined in 2022 following the adoption of the pitch timer. The total rate of pitcher injuries per day of the regular season, as documented by club medical staff, decreased from 2021 to 2022.
先行实施的小联盟已有两年的数据可以参考
2020 119人
2021 110人
小样本，但还是减少了
基本上我们无法肯定投球计时与受伤有正相关，甚至用最简单的回归模型看还是低程度的负相关
但即使如此，还是有些人认为这样的计时会导致受伤风险增高
“If you have a pitch clock, and it’s limiting the time they have to rest and replenish the energy source, we run into problems where they may not be prepared enough to actually compete or stay non-fatigued during the rest of the outing.”
Sonne wrote that the minor-league pitch clock should lead to more injuries based on a study he referenced on these pages, and also referenced work that found shortened periods of time between pitches increased the signs of fatigue in baseball players up to two days after throwing
疲劳跟体力的消耗更明显，但后面也有提到这是双向的，投手投球的时间也相当减少
然后也提到投手调配体力变难的问题，让他们很难在想催球速的时候催球速
最后提到，即使球速下降和疲劳伤痛，跟球速和球季长度的关系还是比较直接，且运动员也正在适应此种情况
结论，投球计时器跟受伤有没有关系，根据数据可能没有，根据质性评论，有人担心但都只是体感，而且基本上跟追求球速和球季长度关系比较多
所以现在喊受伤跟投球计时有关的其实就是空话比较多