Changes in single skinfold thickness in 100 km ultramarathoners.

摘要: Background: Changes in single skinfold thickness and body fat have been investigated ultraswimmers ultracyclists, but not ultrarunners. The present study the changes during a 100 km ultramarathon. Methods: Firstly, we associations between prerace preparation composition and, secondly, ultramarathon 219 male ultramarathoners. mass skeletal muscle were estimated using anthropometric methods. Results: Kilometers run weekly running speed training negatively associated with all thicknesses (P < 0.05) except for front thigh skinfold. During race, at pectoral (−0.1%), suprailiac (−1.8%), calf (−0.8%) sites decreased 0.05). subjects lost 1.9 ± 1.4 kg of 0.001), 0.7 1.0 0.2 1.3 decrease was positively related to both (r = 0.21, P 0.0017) 0.41, 0.0001). Conclusion: volume training. Secondly, ultramarathon, pectoral, suprailiac, sites, site. Percent decreases ultrarunners lower than percent reported ultracyclists.