Devices, systems, and methods are disclosed for measuring, capturing, and modifying the motion of a body, for providing visual comparisons, metrics of comparison, and for generating motion standards. Motion standards may be manually or algorithmically modified to a different desired motion standard. The motion standards may be generated during motion capture and may be used as references for comparing amongst other motion standards or captured motions. Comparisons may generally be used for training and improving upon motions, such as athletic related motions, rehabilitation related motions, and the like. In certain embodiments data capture is done primarily by sensor units worn on a body which communicate amongst each other and with a secondary processing unit, which analyzes the data, provides means of comparing and modifying a captured motion, and which stores or relays such data to a tertiary device, such as a remote database.
