Roller Carrie A, Cohen Helen S, Bloomberg Jacob J, Mulavara Ajitkumar P
Bobby R. Alford Department of Otolaryngology, Head and Neck Surgery, Baylor College of Medicine, Houston, TX 77030, USA.
Percept Mot Skills. 2009 Feb;108(1):173-80. doi: 10.2466/PMS.108.1.173-180.
Previous work has shown that variable practice facilitates adaptation to novel visuomotor changes during throwing tasks and obstacle avoidance on a solid floor. To assess whether locomotor skill on an obstacle-avoidance task performed on a compliant surface and in a novel visuomotor environment improved after training with variable practice, 61 normal adults practiced traversing the obstacle course. Half the trials were performed with no visual changes and half with either sham lenses or visually distorting lenses; the latter were either single or multiple lenses. On transfer tests on the obstacle course while wearing novel lenses, scores were significantly better with multiple lenses than sham; the single-lens group did not differ from sham or multiple-lens groups. Thus, performance in a novel visual environment on a compliant surface improved most with variable practice.
先前的研究表明，在投掷任务和在坚实地面上避障时，可变练习有助于适应新的视觉运动变化。为了评估在顺应性表面和新的视觉运动环境中执行的避障任务的运动技能在经过可变练习训练后是否得到改善，61名正常成年人练习穿越障碍课程。一半的试验在无视觉变化的情况下进行，另一半试验使用假镜片或视觉扭曲镜片；后者为单镜片或多镜片。在佩戴新型镜片进行障碍课程的转移测试时，多镜片组的得分明显优于假镜片组；单镜片组与假镜片组或多镜片组没有差异。因此，在顺应性表面上的新视觉环境中的表现通过可变练习得到了最大程度的改善。
