Thursday, July 19, 2007

Hot climate and youth exercise

CHILDREN'S RESPONSES TO EXERCISE IN HOT CLIMATES: IMPLICATIONS FOR PERFORMANCE AND HEALTH
Oded Bar-Or, M.D.Professor of Pediatrics

KEY POINTS
1. Compared with adolescents and adults, children produce more heat relative to body mass during activities such as walking and running, they have a low sweating capacity, and their body core temperature rises at a higher rate during dehydration. 2. These differences do not interfere with children's ability to sustain exercise unless climatic heat stress is extreme.3. There are no adequate scientific comparisons of the incidence of heat-related illness in children and adults, but certain childhood diseases enhance the risk for a heat-related illness.