| 摘要 |
<p>A medicine ball exercise device has an elongated round shape with a handle at each end to provide an unstable training environment for a user to develop core body strength, balance and stability. The device is fillable with a granular or liquid material to add weight, can contain an object that may be weighted and may be suspended or free, and the object may be a gyroscope. The device may be hard or soft, opaque or transparent and may be hollow or solid, and can be shaped so as to stand on end to be filled and for storage. The device may also have one or more facet surfaces.</p> |
