Every year millions of athletes suffer from reduced performance and heat injury due to overheating, leading even to unnecessary deaths.
In 2005, the US Track and Field Road Running Information Center reported that there were 37.8 million runners in the United States. Every year, countless runners -- and Americans overall -- suffer heat-related illnesses. There were 3,442 fatalities due to heat from 1999 to 2003.
There is an urgent need for temperature monitoring during outdoor sports, particularly with the aging generations who want to continue their active lifestyles of tennis, running, golf and other outdoor activities.
Young people are also at needless risk of heat-related injuries and fatalities. In 2007, the National Center for Catastrophic Sport Injury reported:
Everyone (from a recreational athlete to a gold medal Olympic champion) is at risk of reduced performance due to increased body temperature!
Any excess heat stored in the body (>38.5C) can cause reduced performance during physical activity.