Real-Time Wrist Posture Correction During Strength Training Using Vibrotactile Feedback

This study investigates the effectiveness of a vibrotactile feedback system in promoting proper wrist posture during bicep curling exercises. A total of 20 university students were divided into two groups depending on the correction method for their wrist angle: control (no feedback) and experimental (vibrotactile feedback). The experimental protocol consisted of four sessions, with data collection occurring from the second to the fourth session. The primary metric was the proportion of time the wrist maintained the correct flexion-extension angle, which was individually tailored for each participant with the help of a trainer. The results showed significant effects from the feedback type and session number. The vibrotactile system demonstrated higher percentages of wrist alignment compared to the control group, particularly in the second session, possibly indicating learning effects. These findings are explained throughout the document and support the use of vibrotactile feedback as an effective tool to monitor and improve wrist posture, highlighting its potential in motor skills learning and haptics research.