A growing body of research has found that distracted walking is a safety concern due to reduced situation awareness and the possibility of compromised gait performance. Distraction tasks, such as texting, browsing social media, and playing games, differ in terms of their physical and cognitive demands. However, few studies have examined whether there are differences in how physical and cognitive demands impact gait. The goal of this paper is to evaluate workload differences between four distraction tasks that represent common smartphone functions and may differ in terms of physical and cognitive demands: 1) No distraction, 2) Reading, 3) Tapping, 4) N-Back. We characterized the workload differences using three methods, a subjective workload assessment (NASA-TLX) and two physiological workload measures, pupil width and blink rate. Our results suggest that the chosen distraction tasks differ in their workload demands. While, a preliminary analysis of descriptive gait parameters failed to find significant differences between the distraction conditions, further analysis of more complex gait measures may be required to understand differences between physical and cognitive demands.
