Bruce Lee and Electronic Muscle Stimulators:
Dragon: The Bruce Lee Story, released in 1993,(twenty years after the depiction of the scene below using an earlier model unit) is a biographical film telling the story of martial arts founder and actor Bruce Lee, starring Jason Lee (no relation) as Bruce Lee, Lauren Holly (as Linda Emery) and Robert Wagner.
The film is based upon the novel Bruce Lee: The Man only I Knew, written by Linda Lee Cadwell, the late Bruce Lee's wife and widow endorsed the accounts and major events that shaped his life.
Almost 200 years before Bruce Lee began benefitting from muscle stimulation
Luigi Galvani (1791) provided the first scientific evidence that current can activate muscle. During the 19th and 20th century researchers studied and documented the exact electrical properties that generate muscle movement. It was discovered that the body functions induced by electrical stimulation caused long-term changes in the muscles. Recent medical physiology research pinpointed the mechanisms by which electrical stimulation alters cells of muscles, blood vessels and nerves-Wikipedia