Tour de France versus Vuelta a Espa??a: Which Is Harder?

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Abstract
Uring the last year. Methods: Seven professional road cyclists (28 ± 1 yr; [latin capital V with dot above]O2max: 74.6 ± 2.2 mL·kg-1·min-1) who participated in both Tour and Vuelta during the years 1997, 1999, 2000, or 2001 were collected as subjects. They wore a heart rate (HR) telemeter during each stage of the two races, and exercise intensity was divided into three phases according to the reference HR values obtained during a previous ramp cycle-ergometer test: phase I (RCP). Total volume and intensity were integrated as a single variable. The score for volume × intensity in each phase was computed by multiplying the accumulated duration in this phase by a multiplier for this particular phase. The total score for Tour and Vuelta was obtained by summating the results of the three phases. Results: The total loads (volume × intensity) did not significantly differ between the two races (P > 0.05), despite a significantly longer total exercise time of the Tour (P < 0.05) (5552 ± 176 vs 5086 ± 290 min). Conclusion: The physiological loads imposed on cyclists’ bodies do not differ between the Tour and Vuelta, despite the longer duration of daily stages in the former race....