“…Age-related declines in endurance and ultra-endurance performance have been well described in the literature for running [24,35,38,54,83,89,90,91] , cycling [92,93,94,95] , swimming [83,85] and more recently, for triathlon. [34,79,92,96,97,98] Endurance and ultra-endurance performance appears to be maintained until approximately 35-40 years of age, followed by modest decreases until 50 years of age and a progressive decrease in performance thereafter.…”