Poor posture is a significant concern due to its detrimental effects on health and productivity. This paper presents a collar-clipped device called PostureClip, designed to restrict users from sitting and working at a bent angle, by blacking out the screen and resuming on correcting posture, thereby promoting better posture. The device integrates sensors and feedback mechanisms to provide real-time posture feedback to users. To evaluate the effectiveness of PostureClip, a controlled experiment was conducted with participants (n=165) who were working on a laptop/PC for over 6 hours per day. The participants were randomly assigned to both the intervention group (IG1,n=54 ; IG2,n=55), which used the collar-clipped device, and the control group (CG, n=56), which did not use the device. IG1 didn't get feedback while IG2 got feedback from the device by notifying and further darkening the screen. The study was conducted in the office environment of the participants, for 4 weeks, and metrics such as posture angle, duration of bent angle, and user feedback were collected. Analysis revealed significant improvements in posture angle (p<0.001) and significant reduction in bent angle duration (p<0.01) for participants' group using PostureClip with feedback and compared to the group without feedback and the control group (who were not intervened). The qualitative analysis of user feedback highlighted the device's ease of use, effectiveness in providing timely feedback, and positive impact on participants' awareness and habits regarding posture. These results indicate that PostureClip is an effective tool for promoting better posture during sedentary work.

翻译：不良姿势因其对健康和生产力产生的不良影响而备受关注。本文介绍了一种名为PostureClip的夹式装置，该装置通过黑屏并在纠正姿势后恢复屏幕显示的方式，限制用户以弯腰角度坐着工作，从而促进更健康的姿势。该设备集成了传感器和反馈机制，可向用户提供实时姿势反馈。为评估PostureClip的有效性，我们进行了一项对照实验，招募了每天使用笔记本电脑/个人电脑工作超过6小时的参与者（n=165）。参与者被随机分配到干预组（IG1,n=54；IG2,n=55）和对照组（CG,n=56）。干预组使用该夹式装置，而对照组不使用。其中，IG1组不接收反馈，IG2组通过设备发出的通知和进一步屏幕变暗获得反馈。该研究在参与者的办公室环境中进行，持续4周，收集了姿势角度、弯腰时长及用户反馈等指标。分析显示，与无反馈组和未受干预的对照组相比，使用带反馈功能的PostureClip的参与者组在姿势角度上有显著改善（p<0.001），弯腰时长显著减少（p<0.01）。用户反馈的定性分析凸显了该设备的易用性、及时提供反馈的有效性，以及对参与者姿势意识和习惯的积极影响。这些结果表明，PostureClip是在久坐工作期间促进更佳姿势的有效工具。