Ian Janssen is cross-appointed as a Professor to both the Department of Public Health Sciences and the School of Kinesiology and Health Studies. He is currently Canada Research Chair in Physical Activity and Obesity. Over the last four years he has undertaken three projects with the support of the Heart & Stroke Foundation, each with the aim of pinning down just how active Canadian children are, what factors affect their activity, and how their activity influences their health. The most recent of these undertakings is the most ambitious: outfitting hundreds of Kingston-area elementary school kids with GPS-enabled smart-watch monitors they wear on their wrists and movement monitors attached at the hip. This technology takes readings every 20 seconds over 7 days, creating a huge database of recorded physical motion for Janssen and his colleagues to study. The findings add empirical weight to many of the concerns linking a child’s environment with their activity behaviour. Dr. Janssen's innovative measures and common sense analysis have resulted in publications that have collectively been cited over 35,000 times.