This document discusses various types of exercises that can be performed during physical therapy or rehabilitation. It describes active, passive, resistive, isometric, and active-assistive exercises. Active exercises are performed independently by the patient without assistance in order to increase strength. Passive exercises are carried out by the nurse without patient effort. Resistive exercises involve the patient pushing or pulling against resistance. Isometric exercises involve contracting muscles without joint movement. Active-assistive exercises are performed with some nurse assistance to encourage normal muscle function. Range of motion exercises are also discussed.