Isometric, isotonic, and isokinetic exercises refer to the different techniques for activating and strengthening muscles. Isometric exercises, like planks, involve activating muscles with no movement.

Because they are low-impact, isometric exercises help injury recovery and relieve joint pain. Isometrics don't require equipment so you can do them just about anywhere, even on a plane.

Electromyographic (EMG) activity of the lateral (biceps femoris – BF) and medial (semitendinosus – ST) hamstring muscle was measured during selected strengthening and balance/coordination exercises, ...