Heart block: cause of condition which affects endurance athletes identified in study using racehorses News Opinion Heart block: cause of condition which affects endurance athletes identified in study using racehorses admin June 26, 2021 Endurance athletes (such as triathletes, footballers, or marathon runners) can be some of the healthiest people in... Read More Read more about Heart block: cause of condition which affects endurance athletes identified in study using racehorses