Isometrics are pretty good. You have to do them at various angles to build strength up across a range of motion, but they're very effective. https://en.wikiped

Isometrics are pretty good. You have to do them at various angles to build strength up across a range of motion, but they're very effective. https://en.wikipedia.org/wiki/Isometric_exercise https://en.wikipedia.org/wiki/Isometric_exercise