Exercise ball Exercise ball An exercise ball, also known as a Swiss Ball, is a ball constructed of soft elastic with a diameter of approximately 35 to 85 centimeters (14 to 34 inches) and filled with air. The air pressure is changed by removing a valve stem and either filling with air or letting the ball deflate. It is most often used in physical therapy, athletic training and exercise. It can also be used for weight training. The ball, while often referred to as a Swiss ball, is also known by a number of different names, including balance ball, birth ball, body
Medicine ball Medicine ball A medicine ball (also known as an exercise ball, a med ball, or a fitness ball) is a weighted ball roughly the diameter of the shoulders (approx. 13.7 inches), often used for rehabilitation and strength training. The medicine ball also serves an important role in the field of sports medicine. However, it should not be confused with the inflated exercise ball, which is larger (up to 36" diameter). Medicine balls are usually sold as balls and are used effectively in ballistic training to increase explosive power in athletes in all sports e.g. throwing the medicine ball or jumping