Methods and devices for executing a computerized talk test, comprising: following an exercise program； providing auditory signals from time to time； recording a user talking according to the auditory signals； analyzing the recordings to identify predefined properties； and providing an indication of the user's current heart rate training zone based on the analysis results. Other embodiments discuss a device configured to determine when a user approximately sustains a fixed level of physical effort and then execute a computerized talk test, and a device configured to identify a user's heart rate training zone based on identification of involuntary interruptions in the user's voice speech.
