Knechtle, B., Knechtle, P. and Rosemann, T. 2011. No association of skin-fold thicknesses and training with race performance in male ultra-endurance runners in a 24-hour run. Journal of Human Sport and Exercise. 6, 1 (Mar. 2011), 94–100. DOI:https://doi.org/10.4100/jhse.2011.61.11.