Garmin HRM-Run Monitor (010-10997-08) Calculates - Cadence -the number of steps per minute. It displays the total steps (right and left combined). Calculates - Vertical oscillation -the bounce in your running motion. It displays the vertical motion of your torso (measured in centimeters). Calculates - Ground contact time -the amount of time in each step that your foot spends on the ground while running (measured in milliseconds).