Slide 6 of 18
Isometric contractions refer to contractions in which the length of muscle remains the same (neither lengthening or shortening). Pushing against a wall or statically flexing a muscle are examples of isometric contractions.
Isometric exercises can increase strength but only at the specific range of motion that the muscle was position in during the contraction. This limits the use of isometrics for sport specific applications; however, they are still used clinically and can be used by the general population as an adjunct to a resistance training program.