Using the theory above, you rotate the powerball with a circular wrist motion in either a clockwise or anticlockwise manner, it's works in both directions. They can be used by anyone with hands big enough to grip it. This means the powerball can be used to help relieve the symptoms from Carpal Tunnel Syndrome (CTS) and Repetitive strain injury. The Powerball (or hand held gyroscope) is a truly dynamic object, there are no batteries and no electricity used, unless you have a model with a rpm counter. As you can probably tell by now the Powerball is simple but very effective resistance training. The Powerball can be used by anyone with hands big enough to grip it. This means the powerball can be used to help regain strength, full joint movement and even help with symptoms of Repetitive strain injury.Exercise... Play... Compete Explosive, dynamic, exciting...addictive! The Powerball is also being used to help regain strength, full joint movement and even help with symptoms of Repetitive strain injury.Exercise... Play... Compete Explosive, dynamic, exciting...addictive! The Powerball is also being used to help relieve the symptoms from Carpal Tunnel Syndrome (CTS) and Repetitive strain injury. The Powerball (or hand held gyroscope) is a truly dynamic object, there are no batteries

    Amazon.co.uk: Powerball Gyroscope Neon Green Regular: Sports & Leisure
    by Nsd Powerball.Powerball Gyroscope Neon Green Regular.More about this product Brand new and boxed Powerball 250Hz, Neon Green Regular, This is one of the

    Image: Powerball Neon Green Regular
    Click to view colour.Colors.Image: Powerball Neon Green Regular Powerball Neon Green Regular.Red .Blue.Green