For example , for ultra-runners competing in a 100-km ultra-marathon , faster runners lost more body mass than slower runners ( Knechtle et al. 2012b ) .
A potential explanation could be the decrease in body mass as an ' ergogenic effect ' .
For ultra-runners competing in a 100-km ultra-marathon , faster runners lost more body mass than slower runners ( Knechtle et al. 2012b ) .
A potential explanation could be the decrease in body mass as an ' ergogenic effect ' .