Antonacci Christopher L, Megalla Martinus, Johal Anmol, Omari Ali, Erickson Brandon J, Alberta Frank G
Rothman Orthopaedic Institute, Paramus, New Jersey, U.S.A.
Department of Orthopaedic Surgery, Hackensack Meridian School of Medicine, Nutley, New Jersey, U.S.A.
Arthrosc Sports Med Rehabil. 2022 Mar 5;4(3):e969-e973. doi: 10.1016/j.asmr.2022.01.011. eCollection 2022 Jun.
To evaluate and describe the differences in characteristics between the Major League Baseball (MLB) pitchers with greater workload and career longevity in terms of innings pitched (IP) and performance-matched controls who have not experienced similar length careers.
Using publicly available data, we identified the top 100 MLB pitchers in terms of career IP. Controls were matched to the top 100 pitchers by draft year and round. Pitchers with fewer than 400 IP were excluded. Demographic information, performance statistics, and injury history were reviewed. Logistic regression analysis and Mann-Whitney tests were used to compare data.
Compared with controls, the top 100 pitchers in terms of IP were drafted at a younger age (19.35 vs 19.83, < .001) and in later rounds (6.16 vs 2.45, < .001). They made their MLB debut at a younger age (21.77 vs 23.12, < .001). They also pitched fewer innings before debut (470.59 vs 632.07, = .007), were older at their first (30.72 vs 27.50 years, < .001) and second (32.42 vs 29.43 years, < .001) designations to the injured list (IL), and had a significantly longer time from debut to first (3063.50 vs 1565.59 days, < .001) and second (3712.10 vs 2202.03 days, < .001) IL trips. The top 100 pitchers were 7.45 times less likely to have made a trip to the IL within 8 seasons from their debut and were 4.04 times more likely to be younger than 24 years at their major league debut.
Pitchers with the greatest number of IP in their MLB careers were significantly younger when drafted and when they made their major league debut, although this age difference is likely clinically insignificant. Pitchers who were drafted or debuted at a later age accumulate more pre-debut innings and this may contribute to fewer total IP in the MLB. Similarly, later trips to the injured list and longer duration from debut to first or second trip to the IL, but not total IL trips, are predictive of longer careers compared to age and draft class matched controls.
III, retrospective cohort study.
评估并描述美国职业棒球大联盟（MLB）中工作量较大且职业生涯较长的投手（以投球局数（IP）衡量）与未经历类似职业生涯长度的表现匹配对照组之间的特征差异。
利用公开数据，我们确定了职业生涯IP排名前100的MLB投手。对照组根据选秀年份和轮次与前100名投手进行匹配。投球局数少于400局的投手被排除。审查了人口统计学信息、表现统计数据和伤病史。使用逻辑回归分析和曼-惠特尼检验来比较数据。
与对照组相比，IP排名前100的投手被选中时年龄更小（19.35岁对19.83岁，P <.001）且轮次更靠后（6.16对2.45，P <.001）。他们在更年轻的时候首次亮相MLB（21.77岁对23.12岁，P <.001）。他们在首次亮相前投的局数也更少（470.59局对632.07局，P =.007），首次（30.72岁对27.50岁，P <.001）和第二次（32.42岁对29.43岁，P <.001）进入伤病名单（IL）时年龄更大，并且从首次亮相到第一次（3063.50天对1565.59天，P <.001）和第二次（3712.10天对2202.03天，P <.001）进入IL的时间显著更长。IP排名前100的投手在首次亮相后的8个赛季内进入IL的可能性低7.45倍，并且在大联盟首次亮相时年龄小于24岁的可能性高4.04倍。
在MLB职业生涯中IP数最多的投手在被选中时以及首次亮相大联盟时明显更年轻，尽管这种年龄差异在临床上可能并不显著。在较晚年龄被选中或首次亮相的投手在首次亮相前积累了更多局数，这可能导致在MLB中的总IP数减少。同样，与年龄和选秀类别匹配的对照组相比，较晚进入伤病名单以及从首次亮相到第一次或第二次进入IL的时间更长，但不是总的IL次数，预示着职业生涯更长。
III，回顾性队列研究。
