Relationship between 9-Axis Inertial Measurement Unit Output and Canine Activity

Introduction: Inability to accurately measure chronic pain is a barrier to the development of new, or critical evaluation of, therapeutics. Activity monitors (AM) may be the ideal diagnostic target since they are small and provide objective data that can be collected while the pet remains in its natural environment. The objective of this study was to explore relationships between 9-axis inertial measurement unit (IMU) output and activities of varying intensity in dogs of various sizes. We hypothesized that IMU output can distinguish between canine activities with different intensities.