High-intensity exercise and cardiac risk
Is doing high intensity. Exercise for an extended period like running a marathon or a triathlon or climbing a mountain inflammatory and increasing the risk of a cardiac event? By high intensity I mean being continuously in zone 4 and zone 5.
These are recommendations from AHA. The American Heart Association emphasizes that while vigorous physical activity confers superior cardiovascular adaptations and outcomes compared to moderate-intensity exercise, the relative risk of acute cardiovascular events is transiently increased during vigorous activity, especially in habitually sedentary individuals or those with known or occult cardiovascular disease.[1] Overall, the consensus is that the benefits of regular exercise outweigh the risks for most individuals, but high-volume, high-intensity endurance exercise may create a substrate for adverse cardiovascular adaptations in susceptible populations.