Define exercise therapy.

Answer: exercise therapy, also known as therapeutic exercise, is through the role of mechanics, according to the characteristics of the disease and the body's functional status, with the help of therapeutic equipment and/or therapist's manipulation and the patient's own participation, through the active and/or passive movement to improve the body's local or overall function, enhance the physical fitness and improve the quality of life of a treatment and/or exercise methods, but also the basic rehabilitation of medicine. It is also one of the basic treatment methods of rehabilitation medicine. According to the energy consumption can be divided into relaxation exercise, strength exercise, endurance exercise. According to the form of muscle contraction, it can be categorized into isometric and isotonic contraction, and isokinetic exercise. According to the source of power can be divided into active and passive exercise.