Investigating Interaction Fatigue in Gesture-Based Interfaces: A Comprehensive Study on User Performance, Physical Strain, and Task Efficiency

Abstract

Gesture-based interfaces offer intuitive and immersive interaction methods, but prolonged use can lead to interaction fatigue, which can negatively impact user performance and satisfaction. This study explores the effects of extended use of gesture-based interfaces on task efficiency, error rates, and physical strain. Forty participants engaged in tasks of varying complexity, with physical strain measured using wearable fitness trackers to monitor heart rate and activity levels. Additionally, subjective fatigue levels were recorded using the Borg Rating of Perceived Exertion (RPE) scale. Task performance data, including task completion times and error rates, were analyzed to assess the impact of fatigue on efficiency. Results indicate a significant correlation between increased physical strain and a decline in performance, particularly in tasks requiring complex gestures. Time-series analysis revealed critical thresholds where fatigue begins to impair performance, while correlation plots highlighted the relationship between physical exertion and error rates. The findings provide insights into designing more ergonomic and adaptive gesture-based systems that can mitigate fatigue and improve long-term user experience, offering practical guidelines for enhancing interface usability during extended interactions.