A system and method for range of motion analysis while exercising, including methods for constructing user movement profiles based on repeated and typical user movements during exercises as are typical for an adult of a user's age, weight, etc., and capable of warning a user of unhealthy, unsafe, or anomalous movement patterns during exercise, using a balance trainer, range of motion analyzer, and a plurality of sensors in conjunction with an exercise device, in an effort to reduce health risks to users during exercise with an enhanced or mixed reality exercise device.