A system includes a control unit configured to be worn by a subject including one or more processors operatively coupled to a memory, a wireless transceiver, and a power supply for powering the one or more processors. The system also includes a computing device independent of the control unit including one or more processors operatively coupled to a memory, a wireless transceiver in communication with the wireless transceiver of the control unit, and a display. The system further includes at least one primary sensor and at least one secondary sensor mountable relative to the subject configured to generate respective primary and secondary signals and to communicate the primary and secondary signals to one of the control unit and the computing device.