Sports Technology Institute, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, UK.
Sports Technology Institute, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, UK.
J Sci Med Sport. 2020 Oct;23(10):985-990. doi: 10.1016/j.jsams.2020.03.011. Epub 2020 Mar 24.
To determine the influence of tracking marker locations on wrist kinematics during free movements and the golf swing, with the intention of recommending a solution that generates meaningful three-dimensional wrist kinematics.
Repeated measures.
Six participants performed free movements of flexion/extension, radial/ulnar deviation and forearm supination/pronation, with a further sixteen participants performing golf drives. A passive motion capture system tracked four different marker sets located on participants' hand and forearm segments. Variables of peak angle and range of motion were used to compare marker sets during free movements and angles at the top of the backswing and impact were compared during the golf swing.
Wrist marker set had a large (η≥0.557) and often significant (p≤0.051) effect on the variables measured during free movements, and a mixed (η≥0.108, p≤0.198) effect on wrist angles during the golf swing. Wrist axial rotation range of motion during free forearm supination/pronation revealed the greatest difference between marker sets (∼42°). The large values generated by two of the marker sets for this rotation appeared to influence the values of flexion/extension and radial/ulnar deviation during the golf swing.
The location of markers used to measure wrist kinematics can have a large effect on the angles generated. A solution of two markers located at the distal end of the forearm and one at the proximal, appears to minimise values of wrist axial rotation during free forearm supination/pronation and, consequently, produce more meaningful three-dimensional wrist kinematics.
确定在自由运动和高尔夫挥杆过程中跟踪标记位置对手腕运动学的影响，旨在推荐一种可生成有意义的三维手腕运动学的解决方案。
重复测量。
6 名参与者进行了屈伸、桡偏/尺偏和前臂旋前/旋后等自由运动，另外 16 名参与者进行了高尔夫挥杆。一个被动运动捕捉系统跟踪参与者手部和前臂段上的四个不同标记集。使用峰值角度和运动范围等变量来比较自由运动期间的标记集，并在高尔夫挥杆期间比较后摆和撞击时的角度。
手腕标记集对手腕在自由运动期间测量的变量具有较大（η≥0.557）且通常显著（p≤0.051）的影响，并且对高尔夫挥杆期间的手腕角度也有混合（η≥0.108，p≤0.198）的影响。在自由前臂旋前/旋后期间，手腕轴向旋转运动范围的差异最大（约 42°）。两个标记集对此旋转产生的较大值似乎影响了高尔夫挥杆期间屈伸和桡偏/尺偏的角度。
用于测量手腕运动学的标记位置会对手腕产生的角度产生较大影响。一种解决方案是在前臂末端使用两个标记，在近端使用一个标记，这似乎可以最小化自由前臂旋前/旋后期间的手腕轴向旋转值，从而产生更有意义的三维手腕运动学。
