Olivier B, Boulle N, Jacobs J, Obiora O L, MacMillan C, Liebenberg J, McErlain-Naylor S
Wits Cricket Research Hub for Science, Medicine and Rehabilitation, Department of Physiotherapy, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Sport Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
S Afr J Sports Med. 2023 Jun 5;35(1):v35i1a15144. doi: 10.17159/2078-516X/2023/v35i1a15144. eCollection 2023.
Despite differences between left- and right-handed athletes in other sports, minimal evidence exists regarding biomechanical similarities and differences between left- and right-handed cricket fast bowlers performing an equivalent task.
This study aimed to compare the kinematics between left and right-handed fast bowlers performing an equivalent task (i.e. bowling 'over the wicket' to a batter of the same handedness as the bowler).
Full body, three-dimensional kinematic data for six left-handed and 20 right-handed adolescent, male, fast bowlers were collected using the Xsens inertial measurement system. Time-normalised joint and segment angle time histories from back foot contact to follow-through ground contacts were compared between groups via statistical parametric mapping. Whole movement and subphase durations were also compared.
Left-handed players displayed significantly more trunk flexion from 49%-56% of the total movement (ball release occurred at 54%; = 0.037) and had shorter back foot contact durations on average (0.153 0.177 s; = 0.036) compared to right-handed players.
Left- and right-handed bowlers displayed similar sagittal plane kinematics but appeared to use non-sagittal plane movements differently around the time of ball release. The kinematic differences identified in this study can inform future research investigating the effect of hand dominance on bowling performance and injury risk.
尽管在其他运动中，左撇子和右撇子运动员存在差异，但关于执行相同任务的左撇子和右撇子板球快速投球手之间的生物力学异同，现有证据极少。
本研究旨在比较执行相同任务（即向与投球手同手性的击球手“从三柱门一侧投球”）的左撇子和右撇子快速投球手的运动学。
使用Xsens惯性测量系统收集了6名左撇子和20名右撇子青少年男性快速投球手的全身三维运动学数据。通过统计参数映射比较了两组从后脚触地到随挥结束触地的时间归一化关节和节段角度随时间变化的情况。还比较了整个动作和子阶段的持续时间。
与右撇子球员相比，左撇子球员在整个动作的49%-56%阶段表现出明显更多的躯干屈曲（球释放发生在54%阶段；P = 0.037），并且平均后脚触地持续时间更短（0.153±0.177秒；P = 0.036）。
左撇子和右撇子投球手在矢状面运动学上表现相似，但在球释放时刻左右似乎对非矢状面运动的使用方式不同。本研究中确定的运动学差异可为未来研究手的优势对投球表现和受伤风险的影响提供参考。
