Introduction
Several studies showed that office workers and university students were at health risk due to the high occupational sitting time and low occupational physical activity (PA) (Several systematic reviews reported that motivational signage posted near stairs and elevators could increase stair use in public areas (Our study aimed to examine the effectiveness of motivational signage using a specific message on stair use and to report its process evaluation using the RE-AIM (Reach, Effectiveness, Adoption, Implementation, and Maintenance) Framework to improve its external validity and to inform future trials (