Years of strenuous exercising may be associated with greater likelihood of heart damage.The New York Times (3/9, Reynolds) "Well" blog reports that recent research published online in the Journal of Applied Physiology suggests that "spending more years exercising strenuously or completing more marathon or ultramarathon races" may be "associated with a greater likelihood of heart damage." The research, which used "a new type of magnetic resonance imaging," found that "none of the younger athletes or the older nonathletes" in the study "had fibrosis in their hearts." However, approximately 50 percent "of the older lifelong athletes showed some heart muscle scarring."
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