Tour de France, Giro, Vuelta, and classic European races show a unique progression of road cycling speed in the last 20 years

Nour El Helou (1, 2, 3) , Geoffroy C.B. Berthelot (1, 2) , Valérie Thibault (1, 2) , Muriel Tafflet (4) , Hala Nassif (1, 2, 3) , Frederic Campion (1, 2) , Olivier Hermine (5) , Jean-François Toussaint (3)

1 INSEP - Institut national du sport, de l'expertise et de la performance
2 IRMES - EA 7329 - Institut de recherche biomédicale et d’épidémiologie du sport
3 UPD5 - Université Paris Descartes - Paris 5
4 INSERM - Institut National de la Santé et de la Recherche Médicale
5 Service d'immuno-hématologie pédiatrique [CHU Necker]

Road cycling ranks among the most intense endurance exercises. Previous studies and mathematical models describing road cycling have not analysed performances per se. We describe the evolution of road cycling performance over the past 116 years. We studied the top ten cyclists' mean speeds in eight famous classic races and three European Grand Tours, using a previously published multi-exponential model that highlights the different progression periods of an event during the century. In addition, we measured an indicator of difficulty for the Tour de France by calculating the climbing index (i.e. the total altitude climbed over total distance). The eleven races' mean speed increased progressively from 23.13 km · h-1 in 1892 to 41.19+2.03 km • h-1 in 2008. Road cycling development, like other quantifiable disciplines, fits a piecewise progression pattern that follows three periods: before, between, and after the two World Wars. However, a fourth period begins after 1993, providing a speed progression of 6.38% from the third one. The Tour de France's climbing index also provided insight into a recent paradoxical relationship with speeds: when the climbing index increased, the winner's speed also increased. Our results show a major improvement (6.38%) in road cycling performance in the last 20 years and question the role of extra-physiological parameters in this recent progression.

Mots clés: Road cycling; technology; erythropoietin; speed records; physiological limits

Domaines: Sport; Physiologie du sport; Ingénierie et technologie du sport

Nour El Helou, Geoffroy C.B. Berthelot, Valérie Thibault, Muriel Tafflet, Hala Nassif, et al.. Tour de France, Giro, Vuelta, and classic European races show a unique progression of road cycling speed in the last 20 years. Journal of Sports Sciences, 2010, 28 (7), pp.789-796. ⟨hal-01753726⟩