Your balance may be "off," says Green, for a number of reasons, including illness, injury, poor posture, muscle imbalances, or a weak core.

And Ordonez's rotator cuff was found to have only a muscle imbalance, no tears or frays.

"They did confirm that he's got a muscle imbalance," Harrelson said.

"It could even be setting you up for injury if you have muscle imbalances," says Novak.

Mr. Sullivan has his athletes do exercises to correct muscle imbalances brought on by overtraining in a single sport.

Often there are simple exercises you can do to address muscle imbalances in the leg that are typical in women.

Surgery could be required for a tendon release in the case of a severe muscle imbalance leading to contracture.

An incorrectly fitted saddle may eventually lead to muscle imbalance.

Body Map also raises awareness among exercisers of the perils of muscle imbalance.

It disappeared in the others, nor was there any evidence of muscle imbalance.