School of Kinesiology, Auburn University, Auburn, Alabama, USA.
Department of Physical Education and Exercise Science, Lander University, Greenwood, South Carolina, USA.
Int J Sports Med. 2021 Jun;42(6):544-549. doi: 10.1055/a-1263-0938. Epub 2020 Dec 7.
The primary aims of the study were (1) to examine kinematics and kinetics of those pitching with and without lower extremity pain in collegiate softball pitchers, and (2) to determine if there was an association between the lower extremity pain and lower extremity kinematics, trunk kinematics, and shoulder kinetics in collegiate softball pitchers. Thirty-seven NCAA Division I female collegiate softball pitchers (19.8±1.3 yrs,173.7±7.7 cm, 79.0±12.4 kg) participated. Participants were divided into two groups, those who were currently experiencing lower extremity pain and those who were not. Participants threw three rise ball pitches. Kinematic data were collected at 100 Hz using an electromagnetic tracking system. Mann-Whitney U tests revealed no significant kinematic or kinetic differences between pitchers with and without lower extremity pain. Additionally, there were no significant correlations between pain and recorded kinematic and kinetic variables. Considering there were no biomechanical differences observed between pitchers, coaches and athletic trainers should take caution with athlete assessment since athletes may not display altered biomechanics. Further examination into the duration and degree of pain is needed in an attempt to fully understand the implication of pain and pitching mechanics.
(1) 研究有下肢疼痛和无下肢疼痛的大学垒球投手的运动学和动力学；(2) 确定下肢疼痛与下肢运动学、躯干运动学和肩部动力学之间是否存在关联。共有 37 名 NCAA 一级女子大学垒球投手（19.8±1.3 岁，173.7±7.7 厘米，79.0±12.4 公斤）参与了本研究。参与者分为两组，一组是目前有下肢疼痛的，另一组是没有的。参与者投掷三个上升球。使用电磁跟踪系统以 100Hz 的频率收集运动学数据。曼-惠特尼 U 检验显示，有下肢疼痛和无下肢疼痛的投手之间没有显著的运动学或动力学差异。此外，疼痛与记录的运动学和动力学变量之间没有显著相关性。考虑到投手中没有观察到生物力学差异，教练和运动训练师在评估运动员时应谨慎，因为运动员可能不会表现出改变的生物力学。需要进一步研究疼痛的持续时间和程度，以试图充分了解疼痛和投球力学的影响。
