Systems and methods for breathing training and methods to monitor their use are disclosed. According to an aspect, a breathing training monitoring system may include a gas passageway that is occluded or connected to a RMT device for receipt of input from a patient. Further, the system may include a gas pressure transducer configured to measure gas pressure within the gas passageway. The system may include a breathing activity monitor configured to determine whether a breathing activity has been accomplished based on the measure of gas pressure. The breathing activity monitor may also present an indication that the breathing activity has been accomplished in response to determining that the breathing activity has been accomplished.
