Sport Performance Evolution 19. Fiskestrand A, Seiler KS (2004) Training and performance characteristics among Norwegian international rowers 1970–2001. Scand J Med Sci Sports 14: 303–10. 20. Eisenman PA, Johnson SC, Bainbridge CN, Zupan MF (1989) Applied physiology of cross-country skiing. Sports Med 8: 67–79. 21. Rusko HK (1992) Development of aerobic power in relation to age and training in cross-country skiers. Med Sci Sports Exerc 24: 1040–7. 22. Van Ingen Schenau GJ, de Koning JJ, de Groot G (1994) Optimisation of sprinting performance in running, cycling and speed skating. Sports Med 17: 259–75. 23. Lucia A, Hoyos J, Chicharro JL (2001) Physiology of professional road cycling. Sports Med 31: 325–37. 24. De Koning JJ, Houdjik H, De Groot G, Bobbert MF (2000) From biomechanical theory to application in top sports: the klapskate story. Biomech 33: 1225–1229. 25. Kayser B, Mauron A, Miah A (2007) Current anti-doping policy: a critical appraisal. BMC Med Ethics 8: 2. 26. Len S, Berthelot G, Toussaint JF (2008) La performance sportive Franc¸aise a` Pe´kin: Quels constats ? Quels enseignements ? Quelles perspectives ? In: INSEP, ed. The Beijing Human Performance Report. Bilan des performances a` Pe´kin. Paris. In press. PLoS ONE | www.plosone.org 6 November 2008 | Volume 3 | Issue 11 | e3653