Research Institute MOVE, Faculty of Human Movement Sciences, VU University, Amsterdam, The Netherlands.
Research Institute MOVE, Faculty of Human Movement Sciences, VU University, Amsterdam, The Netherlands.
J Biomech. 2014 Jan 3;47(1):308-12. doi: 10.1016/j.jbiomech.2013.10.002. Epub 2013 Oct 22.
In research regarding postural stability, leg preference is often tested and controlled for. However, leg preference may vary between tasks. As athletes are a group of interest for postural stability testing, we evaluated the effect of five leg preference tasks categorization (step up, hop, ball kick, balance, pick up) on single-leg postural stability of 16 field hockey athletes. The 'center of pressure speed' was calculated as the primary outcome variable of single-leg postural stability. Secondary variables were 'mean length of the GRF vector in the horizontal plane', 'mean length of the ankle angular velocity vector', and 'mean length of the hip angular velocity vector', as well as the separate outcomes per degree of freedom. Results showed that leg preference was inconsistent between leg preference tasks. Moreover, the primary and secondary variables yielded no significant difference between the preferred and non-preferred legs, regardless of the applied leg preference task categorization (p>0.05). The present findings do not support the usability of leg preference tasks in controlling for bias of postural stability. In conclusion, none of the applied leg preference tasks revealed a significant effect on postural stability in healthy field hockey athletes.
在有关姿势稳定性的研究中，通常会测试和控制腿部偏好。然而，腿部偏好可能因任务而异。由于运动员是姿势稳定性测试的感兴趣群体，我们评估了五种腿部偏好任务分类（上步、跳跃、球踢、平衡、拾起）对 16 名曲棍球运动员单腿姿势稳定性的影响。“足底压力速度”被计算为单腿姿势稳定性的主要结果变量。次要变量包括“水平方向 GRF 向量的平均长度”、“踝关节角速度向量的平均长度”和“髋关节角速度向量的平均长度”，以及每个自由度的单独结果。结果表明，腿部偏好在腿部偏好任务之间不一致。此外，无论应用哪种腿部偏好任务分类，主要和次要变量在优势腿和非优势腿之间均无显著差异（p＞0.05）。本研究结果不支持在控制姿势稳定性偏差时使用腿部偏好任务。总之，在健康的曲棍球运动员中，应用的腿部偏好任务均未显示出对姿势稳定性的显著影响。
