title: Effects of active warm-up and diurnal increase in temperature on muscular power.
abstract: OBJECTIVE
  To investigate the effects of both an active warm-up (AWU) and the diurnal increase in body temperature on muscular power.
  
  
  METHODS
  Eight male subjects performed maximal cycling sprints in the morning (7:00-9:00 a.m.) and afternoon (5:00-7:00 p.m.) either after an AWU or in a control condition. The AWU consisted of 12 min of pedaling at 50% of & OV0312;O2 max inter-spersed with three brief accelerations of 5 s.
  
  
  RESULTS
  Rectal temperature, maximal force developed during the cycling sprint, and muscular power were higher in the afternoon than in the morning (P<0.05). Rectal temperature, calculated muscular temperature, and muscular power were higher after AWU than in control condition (P<0.05).
  
  
  CONCLUSIONS
  The beneficial effect of an AWU can be combined with that of the diurnal increase in central temperature to improve muscular power.
authors.affiliation: Laboratory ACTES, University of Antilles-Guyane, Pointe-à-Pitre, FRANCE.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Racinais
authors.forename: Stephen
authors.initials: S
authors.lastname: Blonc
authors.forename: Olivier
authors.initials: O
authors.lastname: Hue
mesh_terms: D000328:Adult; D001642:Bicycling / Q000502:physiology*; D001831:Body Temperature / Q000502:physiology*; D016022:Case-Control Studies; D002940:Circadian Rhythm / Q000502:physiology*; D005080:Exercise Test; D006358:Hot Temperature; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D013995:Time