Int J Sports Med 2004; 25(1): 14-19
DOI: 10.1055/s-2003-45226
Physiology & Biochemistry
© Georg Thieme Verlag Stuttgart · New York

Circadian Rhythms in Two Types of Anaerobic Cycle Leg Exercise: Force-Velocity and 30-s Wingate Tests

N.  Souissi1 , A.  Gauthier1 , B.  Sesboüé2 , J.  Larue1 , D.  Davenne1
  • 1Centre de Recherches en Activités Physiques et Sportives UPRES EA 2131, Université de Basse-Normandie, UFR STAPS Caen Cedex, France
  • 2Institut Régional de Médecine du Sport, CHU Côte de nacre, Caen Cedex, France
Further Information

Publication History

Accepted after revision: April 4, 2003

Publication Date:
29 January 2004 (online)


Previous studies investigating the impact of circadian rhythms on performance during anaerobic cycle leg exercise have yielded conflicting results. The purpose of the present investigation was firstly, to determine the effect of the time of day on anaerobic performance during a force-velocity test on a cycle ergometer (F-V) and the Wingate test and secondly, to relate any changes in anaerobic performance to the circadian rhythm in oral temperature. Nineteen subjects volunteered to take part in the study. In a balanced and randomized study design, subjects were measured for maximal power (Pmax) (force-velocity test), peak power (Ppeak) and mean power (Pmean) (Wingate test) on six separate occasions. These were at 02 : 00, 06 : 00, 10 : 00, 14 : 00, 18 : 00 and 22 : 00 hours on separate days. There was an interval of 28 h between two successive tests. Oral temperature and body mass were measured before each test. Body mass did not vary during the day but a significant time of day effect was observed for the oral temperature with an acrophase at 18 : 22 ± 00 : 34 hours. A significant circadian rhythm was found for Pmax with an acrophase at 17 : 10 ± 00 : 52 hours and an amplitude of 7 %. A time-of-day effect was significant for F0 and V0. Also a significant circadian rhythm was observed for Ppeak with an acrophase at 17 : 24 ± 00 : 36 hours and an amplitude of 7.6 % and for Pmean with an acrophase at 18 : 00 ± 01 : 01 hours and an amplitude of 11.3 %. The results indicated that oral temperature, Ppeak, Pmean and Pmax varied concomitantly during the day. These results suggest that there was a circadian rhythm in anaerobic performance during cycle tests. The recording of oral temperature allows one to estimate the time of occurrence of maximal and minimal values in the circadian rhythm of anaerobic performance.


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D. Davenne

Centre de Recherches en Activités Physiques et Sportives UPRES EA 2131

Université de Basse-Normandie · UFR STAPS 14032 Caen Cedex · France ·

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