Researchers from Texas measured the effect of the equipment on 22 healthy, active-duty soldiers. Each participant performed three exercises, a minimum of 1 week apart, wearing different clothing and gear for each test.
When exercising with a chemical protective mask or the full protective suit, participants showed a significant decrease in oxygen uptake and oxygen pulse.
The research was presented at the annual scientific assembly of the American College of Chest Physicians, Chest 2006, held in October in Salt Lake City, Utah.