Motorized exercise wheel for exposure of small animals to environmental pollutants

For environmental inhalation studies a motorized exercise wheel was designed for small laboratory animals. Mice or hamsters were separated in individual enclosures, and each animal was required to perform the same exercise. The wheel was driven by a common barbecue spit motor, the speed of which may be varied by a standard variable transformer, from 1-6 revolutions per min. This unit can be adapted for a variety of laboratory applications.