Asakawa Deanna S, Dennerlein Jack T, Jindrich Devin L
Department of Kinesiology, California State University San Marcos, 333. S. Twin Oaks Valley Rd., San Marcos, CA, USA.
Department of Physical Therapy, Movement, and Rehabilitation Sciences, Bouvé College of Health Sciences, Northeastern University, 360 Huntington Avenue, Boston, USA.
Appl Ergon. 2017 Jan;58:176-181. doi: 10.1016/j.apergo.2016.06.004. Epub 2016 Jun 29.
This study aimed to quantify differences in 7 touchscreen gestures. Eighteen participants performed index finger tapping, sliding in 4 orthogonal directions, and index finger and thumb pinch and stretch gestures on a touchscreen tablet computer. We hypothesized that two finger gestures would require longer task completion time and greater finger joint excursions than sliding gestures using only the index finger. We measured task completion times and finger joint kinematics. Tapping showed the fastest average (±SD) task completion time, 567(190) ms, of all gestures (p < 0.001). Pinch had faster task completion time, 765(277) ms, than all single-finger sliding gestures (p < 0.001). Stretch was faster to complete at 843(317) ms (p < 0.001) than all sliding gestures except slide right. Stretch demonstrated greater mean index finger metacarpophalangeal flexion/extension joint excursions, 63(16)°, compared to sliding gestures, 34(10)°, and tapping, 27(13)° (p < 0.01). Overall, two-finger gestures were faster to complete and showed greater joint excursions than single-finger sliding gestures.
本研究旨在量化7种触摸屏手势的差异。18名参与者在触摸屏平板电脑上进行食指点击、沿4个正交方向滑动、食指与拇指捏合及伸展手势。我们假设与仅使用食指的滑动手势相比，双指手势需要更长的任务完成时间和更大的手指关节活动度。我们测量了任务完成时间和手指关节运动学数据。在所有手势中，点击的平均（±标准差）任务完成时间最快，为567（190）毫秒（p < 0.001）。捏合的任务完成时间（765（277）毫秒）比所有单指滑动手势都快（p < 0.001）。伸展完成时间为843（317）毫秒，比除向右滑动外的所有滑动手势都快（p < 0.001）。与滑动手势（34（10）°）和点击（27（13）°）相比，伸展时食指掌指关节屈伸的平均活动度更大，为63（16）°（p < 0.01）。总体而言，双指手势比单指滑动手势完成速度更快，且关节活动度更大。
