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Maximal intermittent cycling exercise: effects of recovery duration and gender

Laboratoire d'Ergonomie Sportive et Performance-EA 3162, Université de Toulon-Var, 83957 La Garde, France

Submitted 26 October 2002 ; accepted in final form 4 June 2003

This study aimed to evaluate potential gender differences in recovery of power output during repeated all-out cycling exercise. Twenty men and thirteen women performed four series of two sprints (Sp1 and Sp2) of 8 s, separated by 15-, 30-, 60-, and 120-s recovery. Peak power (P_peak), power at the 8th s, total mechanical work, and time to P_peak were calculated for each sprint. P_peak and mechanical work decreased significantly between Sp1 and Sp2 after 15-s recovery in both men (-6.4 and -9.4%, respectively) and women (-7.4 and -6.8%, respectively). Time to P_peak did not change between recovery durations, but women reached their peak power more slowly than men (on average 5.15 ± 1.2 and 3.8 ± 1.2 s, respectively; P < 0.01). During Sp1 and Sp2, linear regressions from P_peak to power at the 8th s showed a greater power decrease (%P_peak) in women compared with men (P < 0.05). In conclusion, patterns of power output recovery between two consecutive short bouts were similar in men and women, despite lower overall performance and greater fatigability during sprints in women.

anaerobic power; all-out repeated exercise; cycle ergometer

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