Bijman M P, Fisher J J, Vallis L A
a Department of Human Health and Nutritional Sciences , University of Guelph , Guelph , Canada.
J Sports Sci. 2016;34(10):915-22. doi: 10.1080/02640414.2015.1078486. Epub 2015 Aug 20.
Research examining our ability to avoid obstacles in our path has stressed the importance of visual input. The aim of this study was to determine if athletes playing varsity-level field sports, who rely on visual input to guide motor behaviour, are more able to guide their foot over obstacles compared to recreational individuals. While wearing kinematic markers, eight varsity athletes and eight age-matched controls (aged 18-25) walked along a walkway and stepped over stationary obstacles (180° motion arc). Visual input was manipulated using PLATO visual goggles three or two steps pre-obstacle crossing and compared to trials where vision was given throughout. A main effect between groups for peak trail toe elevation was shown with greater values generated by the controls for all crossing conditions during full vision trials only. This may be interpreted as athletes not perceiving this obstacle as an increased threat to their postural stability. Collectively, findings suggest the athletic group is able to transfer their abilities to non-specific conditions during full vision trials; however, varsity-level athletes were equally reliant on visual cues for these visually guided stepping tasks as their performance was similar to the controls when vision is removed.
研究我们在行进路线中避开障碍物能力的相关研究强调了视觉输入的重要性。本研究的目的是确定参加大学水平田径运动的运动员（他们依靠视觉输入来指导运动行为）与普通个体相比，是否更有能力引导脚越过障碍物。八名大学运动员和八名年龄匹配的对照组（年龄在18 - 25岁之间）佩戴运动学标记沿着一条通道行走，并跨过静止的障碍物（180°运动弧）。在越过障碍物前三步或两步时，使用PLATO视觉护目镜操纵视觉输入，并与全程提供视觉的试验进行比较。仅在全视觉试验中，对照组在所有越过条件下产生的峰值后足趾抬高值更大，显示出组间的主要效应。这可能被解释为运动员没有将这个障碍物视为对其姿势稳定性的更大威胁。总体而言，研究结果表明，在全视觉试验中，运动员组能够将他们的能力转移到非特定条件下；然而，大学水平的运动员在这些视觉引导的跨步任务中同样依赖视觉线索，因为当视觉被去除时，他们的表现与对照组相似。
