| 摘要 |
<p>A weight for a barbell with means to vibrate the weight. The rotation means may comprise a mass 46 located in the weight and driven to rotate by an electric motor 48. The mass 46 may be eccentrically mounted with respect to a central point of the weight and there may be a worm gear arrangement 150 to drive its movement. The mass 46 may also be supporting on bearings. A control means with a wireless transmitter and receiver may be provided. Alternatively a wire can pass through a bar to connect a pair of weights. The controller may control the amplitude and frequency of the vibration and may also be used to coordinate or synchronise vibrations on different weights using sensors. A slave and master relationship may be provided in respect of the coordination of vibration on different weights. Cooperating keys and grooves may be used to retain a weight on a bar.</p> |
