Exercise ball standard exercises, such as a push-up, on an unstable surface can be used to increase activation of core trunk stabilizers and in turn provide increased trunk strength and greater resistance to injury. Fitness Experts and some doctors also recommend sitting on an exercise ball instead of an office chair. That is based on the theory that the abdominal and back muscles are constantly engaged and active to maintain proper posture and balance on the ball. There is no scientific evidence of those benefits occurring by just sitting without additional exercises. However, some people warn against using a Swiss ball as
Ball (rhythmic gymnastics) ball is sometimes placed on their back while the gymnast does a skill such as a walk-over. 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