ABSTRACT
Physical rehabilitation assessments are usually accomplished using direct observation with the aid of a measurement tool such as a goniometer. However, reliability, misalignment, and poor stabilization of the tool may cause inconsistent data during successive measurements. A prototype system was developed using a shaft encoder and inertial sensors to consistently measure the range of motion and track the speed of a patient while performing a specific exercise. With the supervision of a licensed physical therapist (PT), a test was conducted to collect data from the device which was transmitted to an Android-based application using a microcontroller unit and a Bluetooth module. Testing was done by assessing five healthy participants performing specific simple exercises, measured by the PT to get the range of motion and joint movement speed of each participant.
