Recovery Bar with lemon flavour

Effect of a special carbohydrate-protein cake on oxidative stress markers after exhaustive cycling in humans

  • Exercise is linked to oxidative stress, which is related to muscle fatigue and reduced exercise performance
  • The purpose of this study was to examine the consequences of administering a special cake (consisting of carbohydrates and whey protein at a 3.5:1 ratio) compared with an isocaloric placebo (carbohydrate only) cake in oxidative stress biomarkers on 9 men after exhaustive cycling.
  • The subjects initially carried out 2 hours of cycling in an ergometric bicycle, at 60-65% VO2max , followed by 4 hours of recovery and another hour of cycling at 60-65% VO2max which gradually increased to 95% (personal time-keeping).
  • The volunteers consumed the special or placebo cake 4 times after the first round took place (after the work out and every hour for the next 3 hours).
  • Blood samples were kept at 8 different time points: pre-work out, 30 minutes, 1.5 h, 4 h post-work out (first round) and post-work out (second round), 1 hour, 24 hours and 48 hours after the second trial.
  • Thiobarbituric acid reactive species (TBARS), protein carbonyls, total antioxidant capacity (TAC), catalase and glutathione (GSH) were determined spectrophotometrically.
  • The average time to exhaustion was not affected by the cake consumption. However, the consumption of the special cake reduced the TBARS significantly, but had no effect on the other biomarkers