A Comparison of Anthropometric and Training Characteristics among Recreational Male Ironman Triathletes and Ultra-Endurance Cyclists. An older study believed that Ironman was very similar to triathlets regarding the body building. We now compared 83 Ironman Triathlen and 84 long-distance corporation with respect to physique and training. But it showed up that Ironman triathlets and long-distance wheelers with respect to the body building differ significantly. Even in training, there were more differences than similarities. More about https://pubmed.ncbi.nlm.nih.gov/22559736/