Next, tap arms briskly downward. A return to previous position indicates muscle strength, coordination, and good position sense. Hop in place on each foot. This indicates intact lower extremity motor systems, cerebellar function and position sense. Test specific motor groups Have patient actively resist your attempts to flex or extend across specific joints.
Impaired strength is called weakness or plegia .
Cerebellar Rapid rhythmic alternating movements of hands. Have patient pat his thighs, turn hands over and back or touch each finger with thumb of same hand as rapidly as possible. In cerebellar disease, one movement can not be followed by the opposite movements. Movements are slow, irregular, and clumsy. Point to point testing.