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

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

Author information

1
a Department of Food and Natural Products, Pharmaceutical Sciences Program, School of Pharmacy, Rio de Janeiro Federal University, Rio de Janeiro, Brazil.
2
b Nutrition Graduate Program, Castelo Branco University, Rio de Janeiro, Brazil.
3
c Miguel Couto Hospital and Pedro Ernesto Hospital, State University of Rio de Janeiro, Rio de Janeiro Brazil.
4
d Rehabilitation Sciences Graduate Program - Augusto Motta University Center (UNISUAM). Rio de Janeiro. Brazil.
5
e Laboratory of Physical Activity and Health Promotion, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
6
f University Federal of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil.
7
g Physical Activity Sciences Graduate Program, Salgado de Oliveira University, Niterói, Rio de Janeiro, Brazil.
8
h Faculty of Health Sciences University Federal of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil.

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.

KEYWORDS:

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

PMID:
26140415
DOI:
10.1139/apnm-2014-0518
[Indexed for MEDLINE]

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