title: Consumption of açai (Euterpe oleracea Mart.) functional beverage reduces muscle stress and improves effort tolerance in elite athletes: a randomized controlled intervention study.
abstract: 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.
authors.affiliation: a Department of Food and Natural Products, Pharmaceutical Sciences Program, School of Pharmacy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil.|b Nutrition Graduate Program, Castelo Branco University, Rio de Janeiro, Brazil.|c Miguel Couto Hospital and Pedro Ernesto Hospital, State University of Rio de Janeiro, Rio de Janeiro Brazil.
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Carvalho-Peixoto
authors.affiliation: a Department of Food and Natural Products, Pharmaceutical Sciences Program, School of Pharmacy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil.
authors.forename: Mirian Ribeiro Leite
authors.initials: MR
authors.lastname: Moura
authors.affiliation: d Rehabilitation Sciences Graduate Program - Augusto Motta University Center (UNISUAM). Rio de Janeiro. Brazil.|e Laboratory of Physical Activity and Health Promotion, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Felipe Amorim
authors.initials: FA
authors.lastname: Cunha
authors.affiliation: f University Federal of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil.
authors.forename: Pablo Christiano B
authors.initials: PC
authors.lastname: Lollo
authors.affiliation: e Laboratory of Physical Activity and Health Promotion, State University of Rio de Janeiro, Rio de Janeiro, Brazil.|g Physical Activity Sciences Graduate Program, Salgado de Oliveira University, Niterói, Rio de Janeiro, Brazil.
authors.forename: Walace David
authors.initials: WD
authors.lastname: Monteiro
authors.affiliation: a Department of Food and Natural Products, Pharmaceutical Sciences Program, School of Pharmacy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil.
authors.forename: Lucia Maria Jaeger de
authors.initials: LM
authors.lastname: Carvalho
authors.affiliation: e Laboratory of Physical Activity and Health Promotion, State University of Rio de Janeiro, Rio de Janeiro, Brazil.|h Faculty of Health Sciences University Federal of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil.
authors.forename: Paulo de Tarso Veras
authors.initials: Pde T
authors.lastname: Farinatti
mesh_terms: D000328:Adult; D056352:Athletes; D001628:Beverages; D065748:Euterpe; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000187:drug effects* / Q000503:physiopathology; D018384:Oxidative Stress / Q000187:drug effects*; D010807:Physical Endurance / Q000187:drug effects*; D005082:Physical Exertion / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology*; D012420:Running; D013997:Time Factors
chemical_list: D010936:Plant Extracts
keywords: assai; açai; course; lésion musculaire; muscle damage; oxidative stress; pentathlon athletes; pentathloniens; performance; running; stress oxydatif