Effect of burn injury size on cardiovascular responses to exercise in the heat.

Summary: For burn survivors, exercising on a hot day presents a hidden challenge beyond simple discomfort. Healthy skin cools the body through sweating, but scar tissue cannot sweat effectively, trapping heat inside. A recent study discovered that while survivors with smaller burns (covering 20-40% of the body) handled heat similarly to uninjured people, those with extensive burns (over 40% of the body) faced significant risks. During a one-hour walk in hot conditions, the group with larger burns experienced much higher heart rates and blood pressure as their bodies struggled to cool down. If you have extensive burn injuries, staying cool is critical to reducing strain on your heart.