A system has pressure sensors integrated with a first article of footwear worn by a test subject on a left foot, pressure sensors integrated with a second article of footwear, worn by a test subject on a right foot, positioning circuitry determining separation and direction of the first article of footwear relative to the second article of footwear, circuitry collecting readings from the first and second plurality of sensors, and from the positioning circuitry, as variables with respect to time, and communicating the readings to a computerized diagnostic apparatus. The computerized diagnostic apparatus processes the readings for a test period of time, determining gait characteristics for the test subject, including at least stride length and timing, and width of stance, and records the gait characteristics, time and date stamped, in a manner to be retrieved and displayed.