First used in 1963, the exercise ball has staged a comeback in the fitness club and in the home gym. The exercise ball is an inflatable ball of varying sizes, made of vinyl or plastic (and sometimes made of solid foam rubber).

Also called the Swiss ball, the fitness ball and the stability ball, this tool was originally used by physical therapists in rehabilitation programs designed for people with disabilities and injuries. Today, the exercise ball is widely used by athletes, strength coaches and personal trainers, as well as by physical therapists.

It may seem counterintuitive, but one of the exercise ball’s primary advantages is its instability as a round object. By working to maintain balance and control during various exercises involving the ball, a person can improve in many areas, including:

• Strength
• Flexibility
• Circulation
• Agility
• Motor control and coordination
• Endurance
• Balance
• Low back pain
• Range of motion of the spine

As with any piece of fitness equipment, good judgment should be used and all safety precautions should be followed. This is especially true because instability is such an important element in using the exercise the ball.

Always consult a healthcare professional before beginning or changing an exercise program. Before using the exercise ball, it is a good idea to work with a qualified trainer or physical therapist to learn the correct techniques.