The physical therapist has received an order to evaluate and…

The physical therapist has received an order to evaluate and treat a 76-year-old patient (Patient A) who lives in local shelter or on the streets. They believe they last saw a doctor over 20 years ago. The patient was admitted to the hospital in a coma with a blood glucose measure of 423 and diagnosed with diabetes type 2. They are referred to physical therapy for gait and transfer training. Nursing reports that they have been moderate assist for all gait and transfers. The patient also has an open wound on the bottom of the right foot. The wound bed is pale and the skin surrounding it is shiny and tight with no hair growth.  Current medications include:  Lopressor (Metoprolol), Metformin, Insulin, and Cephalexin. Which of the following is the BEST method of instruction in determining intensity for aerobic conditioning exercise prescription with this patient?