You are seeing an elderly patient in their home that was recently discharged from the hospital after a severe bout of pneumonia. The patient was in the hospital for two weeks and in the ICU for the first few days. The patient is able to be upright for only a couple minutes before being too fatigued and needing to lie down and needs supervision for mobility due to being at high risk for a fall. What type of exercises would be MOST appropriate at this stage of recovery?