Kinematic comparison of baseball batting off of a tee among various competition levels
Kinematic comparison of baseball batting off of a tee among various competition levels
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DOI：
10.1080/14763141.2016.1159320
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发表时间：
2016-01-01
影响因子：
2.2
通讯作者：
Fleisig, Glenn S.
中科院分区：
文献类型：
--
作者：
Dowling, Brittany;Fleisig, Glenn S.
确定和了解不同比赛级别的棒球击球机制可能有助于运动员和教练识别关键的运动学，这对成为一名成功的击球手至关重要。这项研究的目的是比较不同比赛级别的击球运动学。对170名男性击球手(青年33人；高中69人；大学22人；专业46人)的运动学和时间数据进行了3D运动捕捉(480 Hz)的分析。结果显示，在挥杆的五个阶段，比赛级别之间的角度位置存在差异，其中青年击球手和职业击球手之间的差异最大。在球接触的瞬间，职业击球手将球棒举得离身体更远，与年轻球员(分别为27度和度)相比，后肩外展(35度)和后肘屈曲(78度)更大。这些差异与职业运动员背部肘关节伸展速度(1539度/S)高于年轻人(1174度/S)有关。此外，与年轻击球手相比，高水平击球手的球棒角速度和线速度更高。随着击球手职业生涯的进步，他们应该专注于他们的后臂，保持肘部向上，手臂向前伸展。
Determining and understanding baseball batting mechanics at various competition levels may help players and coaches identify key kinematics crucial to being a successful hitter. The purpose of this study was to compare batting kinematics across competition levels. Kinematic and temporal data were analysed for 170 male batters (youth n = 33; high school n = 69; college n = 22; professional n = 46) using 3D motion capture (480 Hz). The results showed differences in angular positions between competition levels during the five phases of the swing, with the greatest differences seen between the youth and professional batters. At the instant of ball contact, professional batters held the bat farther away from their body, with greater back shoulder abduction (35 degrees) and less back elbow flexion (78 degrees) compared to youth (27 degrees and 89 degrees, respectively). These differences were associated with greater back elbow extension velocity for professionals (1539 degrees/s) compared to youth (1174 degrees/s). Additionally, higher level batters had higher bat angular and linear velocities compared to the youth batters. As batters progress through their career, they should focus on their back arm by keeping their elbow up and their arm extended in front of them.