A wearable device for movement analysis in outdoor walking and running: a sensor-fusion approach

We developed a single body-mounted sensor that integrates a 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer, barometer, and GPS. The sensor accurately computes speed, acceleration, location, angular velocity and angular orientation at 400 Hz. Steps are also segmented and metrics computed for each step (e.g. cadence, speed, step length and vertical oscillation). This device is a portable alternative to expensive and cumbersome existing methods. Here we present results of tests where biomechanical parameters were computed in walking and running on an outdoor track.