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
Trac Ball traditional Trac Ball. </div> Trac Ball "Not to be confused with the computer-input device called a trackball." Trac Ball (or Trac-Ball, or Tracball) is typically a game of catch played by two or more people wherein both participants wield an oversized glove/racquet/basket, passing a ball back and forth. The racquet is similar in appearance and function to a "jai alai" basket. Trac Ball is also utilized in a game called whirlyball. Whirlyball is a game played on bumper cars where two teams using track balls attempt to score goals against one another by throwing the Trac Ball into the opposing