Exercise Ball

Look for:

• A high-quality ball made of thick rubber or plastic. “If you’re purchasing one for your home, make sure it’s manufactured by a reputable fitness company,” says Florez. “Cheap balls have been known to pop while people are using them, which can lead to serious injury.” 

• The right size ball. As a guideline, people between 5 feet and 5 feet 6 inches should choose a 55 cm ball; those between 5 feet 7 inches and 6 feet 1 inch should choose a 65 cm; and those 6 feet 2 inches and taller, should choose a 75 cm ball. When you sit on the ball, your hips should be slightly higher than your knees, says Lewis.

Stay safe by:

• Getting help from a physical therapist or trainer the first several times you use an exercise ball. “Even sitting on an exercise balls require a great deal of balance, as well as full mobility in your knees,” says Doyle.


Find out which cross trainers and other exercise machines have received the Arthritis Foundation’s Ease of Use Commendation.