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
Ball (rhythmic gymnastics) Ball (rhythmic gymnastics) The ball is an apparatus used in rhythmic gymnastics. It is made of either rubber or synthetic material (pliable plastic) provided it possesses the same elasticity as rubber. It is in diameter and must have a minimum weight of . The ball can be of any colour. The ball should rest in the gymnast's hand and not rest against the wrist or be able to be grasped. Fundamental elements of a ball routine include throwing, bouncing or rolling. The gymnast must use both hands and work on the whole floor area whilst showing continuous flowing movement. The