Muscle testing.

This film shows the apparatus used to create and control muscle contractions. It's not clear what the exact therapeutic use is. A man is subject to an electric current; first his abdomen, then his shoulder, back, buttocks, leg, calf, groin, thigh. A female patient has her muscles electrically stimulated starting with the pectoral and dorsal muscles etc. Finally her neck, ear, nose and face are stimulated.