Wahl Elizabeth P, Pidgeon Tyler S, Richard Marc J
Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC.
J Pediatr Orthop. 2020 Aug;40(7):e609-e615. doi: 10.1097/BPO.0000000000001520.
The primary purpose of this study was to compare the number of pitches thrown by youth baseball players under the official league guidelines versus the number of "high-effort" throws recorded by a validated digital sensor worn by the players during a season.
In total, 11 and 12-year-old youth baseball players from a single league were provided an elbow sleeve and sensor to wear each time they threw a baseball for an entire baseball season. The sensor tracked total throws and pitch-equivalent high-effort throws for the season. Official pitch counts were collected at each game from the official scorekeepers.
A total of 19 players participated in the study. The sensor-determined mean total throw count (1666.2±642.2) and mean high-effort throw count (576.9±329.3) per player were both significantly higher, P<0.0001 and P=0.02, respectively, than the mean official pitch count (168.1±122.4).
Our findings demonstrate that youth players make significantly more total throws and high-effort, or pitch-equivalent, throws, than what is recorded by the official pitch counts. Further research is needed to determine a safe annual "throw count" for young throwing athletes and to determine which types of throws, in addition to pitches, put youth throwers at risk for injury.
Level IV.
本研究的主要目的是比较青少年棒球运动员在官方联赛指导方针下投球的次数与运动员在一个赛季中佩戴经过验证的数字传感器记录的“高强度”投球次数。
来自单一联赛的11岁和12岁青少年棒球运动员在整个棒球赛季每次投球时都佩戴肘部护具和传感器。该传感器跟踪了该赛季的总投球次数和相当于投球的高强度投球次数。每场比赛的官方投球数由官方计分员收集。
共有19名球员参与了该研究。传感器确定的每名球员的平均总投球次数（1666.2±642.2）和平均高强度投球次数（576.9±329.3）均显著高于平均官方投球数（168.1±122.4），P值分别<0.0001和P = 0.02。
我们的研究结果表明，青少年球员的总投球次数和高强度或相当于投球的次数明显多于官方投球数记录的次数。需要进一步研究以确定年轻投掷运动员安全的年度“投球次数上限”，并确定除投球外还有哪些类型的投掷会使青少年投掷者面临受伤风险。
四级。
