a Institute of Biomechanics and Orthopaedics , German Sport University Cologne , Cologne , Germany.
b Human Informatics Research Institute , National Institute of Advanced Industrial Science and Technology , Tokyo , Japan.
Sports Biomech. 2019 Feb;18(1):75-87. doi: 10.1080/14763141.2017.1384051. Epub 2017 Nov 13.
The lower limb kinetics of curve sprinting in amputees are not well described in the literature, particularly with respect to the effect of the side of amputation. This is an issue due to the importance of the knowledge for prosthetic design and classification of athletes. Thus, the aim of this study was to investigate the influence of side of amputation on curve sprinting performance in athletes with a unilateral leg amputation. A three-dimensional motion analysis system (Vicon), four force plates (Kistler) and a modified mathematical human model (ALASKA) were used to compare clockwise and counter clockwise curve sprinting lower limb kinematics and kinetics of a Paralympic medalist with a left-sided knee exarticular amputation. Results reveal that vertical ground reaction force application and total vertical impulse were lower when the affected limb was at the inside of the curve. The unaffected limb showed joint mechanics different to those established for non-amputee athletes and might contribute better to propulsion when being the inside limb. Curve sprinting biomechanics and the ability to attain high radial velocities are directly dependent on the side of amputation relative to the curve direction in a unilateral amputee athlete of highest performance level.
在文献中，对于截肢运动员的曲线冲刺的下肢动力学，特别是截肢侧的影响，描述得并不完善。这是因为了解这方面的知识对于假肢设计和运动员分类非常重要。因此，本研究的目的是调查在单侧腿部截肢的运动员中，截肢侧对曲线冲刺表现的影响。使用三维运动分析系统（Vicon）、四个力板（Kistler）和改良的数学人体模型（ALASKA）来比较残奥会奖牌获得者的左膝关节外截肢的顺时针和逆时针曲线冲刺下肢运动学和动力学。结果表明，当受影响的肢体处于弯道内侧时，垂直地面反作用力的应用和总垂直冲量较低。未受影响的肢体表现出与非截肢运动员不同的关节力学特性，并且当它成为内侧肢体时，可能更有助于推进。在最高水平的单侧截肢运动员中，曲线冲刺的生物力学和达到高径向速度的能力直接取决于相对于弯道方向的截肢侧。
