CARDIOVASCULAR RESPONSES

Older adults don't all react the same way to extreme heat. Some handle it better than others. This isn't just about age. It's also about how fit their hearts are. A recent study looked at how the size of the heart's left ventricle affects body temperature and heart rate in hot, dry conditions. The

During physical activity, the lungs work harder to supply oxygen to the body. This is where the pulmonary artery pressure (PAP) comes into play. PAP is the force that pushes blood from the heart to the lungs. When a person exercises, PAP rises, helping to increase the lung's ability to transfer carb