Figure 1.

Ages of the winners both in the Triple and Deca Iron triathlons. Covering from 1992 to 2010 (A). Mean (±SD) age of the finishers in the Triple and Deca Iron triathlons from 1992 to 2010 (B). The years analysed are pooled, and the mean values are shown on the right side of the panels (Total). The dashed lines represent the linear regressions for the Deca Iron triathletes, and the continuous lines represent the linear regressions for the Triple Iron triathletes between 1992 and 2010. For the winners’ age, the gradients were not different from zero for both the Deca (r² = 0.01, P = 0.07, y = −0.141x + 319.9) and Triple Iron triathletes (r² = 0.18, P = 0.07, y = 0.409x − 781.4). In contrast, the age of the finisher gradients increased by 0.4 years per annum (r² = 0.66, P = 0.002, y = 0.426x − 811.1) for the Deca Iron triathletes and by 0.5 years per annum (r² = 0.83, P = 0.0001, y = 0.506x − 974.7) for the Triple Iron triathletes.