“…The association of anthropometric characteristics with overall race time was also investigated because in prior studies of ultra-endurance athletes, anthropometric variables such as a lower body mass (Knechtle, Duff, Welzel, & Kohler, 2009), a lower Body Mass Index (Hoffman, 2008), a lower body fat (Knechtle, et al, 2009d) and a lower upper arm circumference (Knechtle, Knechtle, Schulze, & Kohler, 2007;Knechtle, et al, 2009a) were related to faster race times, presumably due to great training and increased conditioning. In ultra-cyclists, a lower body fat was associated with a faster race time (Knechtle, et al, 2009d), but not skin-fold thicknesses (Knechtle & Rosemann, 2009;Knechtle, et al, 2009b).…”