Well by no means do stability ball squats take the place of barbell back squats, they can be an important
alternative for many different reasons. First and foremost, those who have
injured backs or simply do not have the form of the back squat down, can get an
effective quadriceps workout with these stability ball squats. In addition to
lessening the compressive forces on the back, the stability ball squat teaches
the pelvic tilt which is necessary for squats and other functional exercises.
Perhaps the most significant benefit of these squats on the Swiss ball is the
possibility of adding other upper body exercises such as deltoid raises and
biceps curls to work multiple muscle groups at once.