Best practice in physical therapy management of idiopathic toe walking (ITW) has not been established, and a valid system to measure toe walking gait is unavailable for clinicians. Purposes of this two-phase project were to 1) develop and test measurement properties of the gait event detector (GED), a device to measure the frequency of heel strike with gait in the natural environment; and 2) evaluate the effect of motor control intervention on gait in preschool age children diagnosed with ITW.