Consumption of açai (Euterpe oleracea Mart.) functional beverage reduces muscle stress and improves effort tolerance in elite athletes: a randomized controlled intervention study

Appl Physiol Nutr Metab. 2015 Jul;40(7):725-33. doi: 10.1139/apnm-2014-0518.


The study analyzed the effect of an açai (Euterpe oleracea Mart.) functional beverage (AB) on muscle and oxidative stress markers, cardiorespiratory responses, perceived exertion, and time-to-exhaustion during maximal treadmill running. The beverage was developed as an ergogenic aid for athletes and contained 27.6 mg of anthocyanins per dose. Fourteen athletes performed 3 exercise tests: a ramp-incremental maximal exercise test and 2 maximal exercise bouts performed in 2 conditions (AB and without AB (control)) at 90% maximal oxygen uptake. Blood was collected at baseline and after maximal exercise in both conditions to determine biomarkers. AB increased time to exhaustion during short-term high-intensity exercise (mean difference: 69 s, 95% confidence interval = -296 s to 159 s, t = 2.2, p = 0.045), attenuating the metabolic stress induced by exercise (p < 0.05). AB also reduced perceived exertion and enhanced cardiorespiratory responses (p < 0.05). The AB may be a useful and practical ergogenic aid to enhance performance during high-intensity training.

Keywords: assai; açai; course; lésion musculaire; muscle damage; oxidative stress; pentathlon athletes; pentathloniens; performance; running; stress oxydatif.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Athletes
  • Beverages*
  • Euterpe*
  • Humans
  • Male
  • Muscle, Skeletal / drug effects*
  • Muscle, Skeletal / physiopathology
  • Oxidative Stress / drug effects*
  • Physical Endurance / drug effects*
  • Physical Exertion / drug effects
  • Plant Extracts / pharmacology*
  • Running
  • Time Factors


  • Plant Extracts