Zheng Ying Jean, Morrell John B
IEEE Trans Haptics. 2013 Jan-Mar;6(1):13-23. doi: 10.1109/TOH.2012.3.
We introduce a novel posture guidance office chair and evaluate the effectiveness of vibrotactile and visual feedback methods for guiding seated postures. For visually dominant office work such as typing on the computer, it is possible that delivering posture feedback visually may overload the visual sense while haptic feedback may be a viable alternative. We performed two experiments to compare vibrotactile and visual feedback--posture compliance and dual-task cognitive workload assessment. In the first experiment, our results showed no statistically significant difference in effectiveness between using vibrotactile and visual feedback to obtain postural compliance to a reference posture. In the second experiment, participants experienced typing performance and response time degradations from both types of feedback. However the differences in performance degradation were not statistically significant between the two feedback methods. We conclude that vibrotactile and visual feedback are similarly effective for guiding quasistatic postures in routine tasks such as seated office work.
我们介绍了一种新型的姿势引导办公椅，并评估了振动触觉和视觉反馈方法在引导坐姿方面的有效性。对于诸如在电脑上打字等以视觉为主导的办公室工作，通过视觉提供姿势反馈可能会使视觉感官负担过重，而触觉反馈可能是一种可行的替代方案。我们进行了两项实验来比较振动触觉反馈和视觉反馈——姿势依从性和双任务认知工作量评估。在第一个实验中，我们的结果表明，在使用振动触觉反馈和视觉反馈来使姿势符合参考姿势方面，有效性没有统计学上的显著差异。在第二个实验中，参与者在两种反馈方式下打字表现和反应时间均出现下降。然而，两种反馈方法在表现下降方面的差异没有统计学意义。我们得出结论，在诸如坐姿办公等日常任务中引导准静态姿势时，振动触觉反馈和视觉反馈同样有效。
