1. A mobile image capture system, comprising: a sensing unit comprising at least one sensor and at least one camera, wherein the at least one sensor and the at least one camera are attached to an article of footwear worn by a participant, and wherein the at least one camera is constructed and arranged to view the participant while the participant is wearing the article of footwear, the at least one camera capturing a sequence of images of the participant while wearing the article of footwear; and processing electronics for storing data representing the captured sequence of images or for relaying data representing the captured sequence of images to a computer or a network.