A study investigated non-atherosclerotic artery wall changes in amateur male endurance runners, finding such changes in 95% of participants. These changes, including intima-medial border blurring and non-atherosclerotic nodules, were primarily observed in the popliteal artery. The study enrolled 20 athletes from the Black Swan Triathlon Club in Slovakia, all with low atherosclerotic risk. A mild correlation was found between these structural abnormalities and training load, though no association with lipid levels or CRP was detected. The findings suggest intense training may contribute to these subclinical changes.
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