LONG TERM ENDRUANCE TRAINING LINKED TO HEART DAMAGE
"Endurance training is thought to contribute to improve heart health. However, a recent study suggests that too much training may have the opposite effect. Published online ahead of print in the Journal of Applied Physiology, the study had the purpose of determining the cardiac structure and function of veteran endurance athletes. The study subjects included three sets of men: 12 older endurance athletes (50-67), 20 older controls (52-69) and 17 younger athletes (26-40). The participants underwent cardiac magentic resonance imaging to assess heart structure and function. Tests to determine myocardial fibrosis (abnormal thicketning of heart valves) were also administered. According to the data, evience of myocardial fibrosis was not present among the young athletes or the older controls. It was present in 50% of the veteran athletes; there was no association based on age. The study authors stated that myocardial fibrosis 'was significantly associated with the number of years spent training and number of competitive marathons and ultra endurance marathons completed. This data suggests a link between life-long endurance exercise and myocardial fibrosis that requires further investigation.'"
Just thought that was interesting...of course no women were tested so of course the study subjects' hearts were thick and hard.