Understanding Physical Activity through 3D Printed Material Artifacts

In this paper, we advocate a novel approach of representing physical activity in the foul' of material artifacts. By designing such material representations, we aim to understand what these artifacts might offer in terms of reflecting upon physical activity. For example, what types of affect do material artifacts, representing ones' physical activity create for the user? In order to advance this understanding, we designed a system called Sweat-Atoms that transfouns the physical activity data based on heart rate into 3D printed material artifacts. We conducted an "in the wild study" by deploying our system in six households where participants were experiencing five different material representations of their physical activity for a period of two weeks each. We found that the material artifacts made participants more conscious about their involvement in physical activity and illustrated different levels of engagement with the artifacts. Along with reporting the gained insights from the deployments, we offer reflections on designing material representations for physical activity. We hope that our work will inspire designers to consider new possibilities afforded by digital fabrication to support user's experience with physical activity by utilizing interactive technologies at our disposal.