BOSU

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A BOSU Balance Trainer, or BOSU ball as it is otherwise called, is an athletic training device consisting of an inflated rubber hemisphere attached to a rigid platform. The name is an acronym which stands for "Both Sides Utilized," (however the BOSU official web site also says it means "Both Sides Up") a reference to the myriad ways a BOSU ball can be used. Most American gyms now stock BOSU balls, as they have become popular accessories for aerobic classes. The device is particularly well suited for balance training. When the dome side faces up, the BOSU ball provides an unstable surface while the device remains stable. This unique combination of stable/unstable allows a wide range of users, from the young, elderly, or injured to the elite level athlete, to find his or her appropriate level of challenge with minimal risk. With the dome side up, the device can be used in a very dynamic manner for athletic drills and aerobic activities.

As the name suggests, the device can be flipped over so that the platform faces up. In this position, the device is highly unstable and well suited for a wide array of exercises as well. Many users use the BOSU ball in this position to train shoulder stability with various push-up and pressing movements.

The BOSU ball was invented in 1999 by David Weck.

[edit] External links

BOSU homepage

Using the bosu ball with the dome side down is challenging, as it requires great agility to stand on the surface. Mounting the ball is best done by placing one foot on the surface, then quickly stepping up onto the platform without looking down. A slow movement just doesn't work.