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Açai pulp supplementation as a nutritional strategy to prevent oxidative damage, improve oxidative status, and modulate blood lactate of male cyclists

  • Sara Ivone Barros Morhy Terrazas
  • Bryan Steve Martinez Galan
  • Flávia Giolo De Carvalho
  • Vinicius Paula Venancio
  • Lusânia Maria Greggi Antunes
  • Marcelo Papoti
  • Maricely Janette Uria Toro
  • Iuri Ferreira da Costa
  • Ellen Cristini de FreitasEmail author
Original Contribution

Abstract

Purpose

Açai pulp is a source of phytochemicals and has been associated with antioxidant, anti-inflammatory, and antigenotoxic effects. This study aimed to assess the effects of açai pulp consumption on oxidative, inflammatory, and aerobic capacity markers of cyclist athletes.

Research methods and procedures

A crossover, randomized, placebo-controlled, single-blind study was developed with ten male cyclists (33.5 ± 4.7 years old, body mass index of 23.9 ± 1.38 kg/m2, and training load around 1875 ± 238 AU/week). The athletes consumed 400 g/day of pasteurized açai pulp (AP) or placebo (PL) for 15 days, with a 30-day wash-out period between trials. Lipid peroxidation, serum antioxidant capacity, DNA damage in peripheral blood (Comet assay), IL-6 and TNF-alpha, blood lactate concentration during effort, anaerobic threshold intensity (ATi), maximum workload reached (Wmax), rating of perceived exertion threshold (RPET), and heart rate threshold (HRT) were evaluated before and after each intervention. Data were analyzed using a linear regression model with mixed effects (p ≤ 0.05).

Results

Increased serum antioxidant capacity (p = 0.006) and decreased lipid peroxidation (p = 0.01) were observed in subjects after intervention with AP. Blood lactate levels during effort significantly decreased (by 29%, p = 0.025) and ATi increased (p = 0.006) after AP. No significant effect on DNA damage was attributed to AP consumption.

Conclusion

We found notable effects of AP intervention on antioxidant status in athletes. Both the reduction in blood lactate concentration and increase in ATi during the effort suggest an overall improvement in the aerobic capacity of the cyclists, confirming that AP consumption may influence variables associated with performance in endurance athletes.

Keywords

Açai Anthocyanins Athletes Antioxidant DNA damage 

Notes

Acknowledgements

The authors would like to thank the cyclists for participating in this study, company Petruz Fruity Group for granting pasteurized açaí pulp to this research, M.S. Ana Rita T. Machado for capturing the DNA damage picture, Dr. Thais B. César and Dr. Ana Lucia M. Nasser for expert assistance in oxidative stress assays, and Dr. Danielle R. Gonçalves and Dr. Paulo I. Costa for expert assistance in inflammatory assays. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brasil (CAPES), Finance Code 001.

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Sara Ivone Barros Morhy Terrazas
    • 1
  • Bryan Steve Martinez Galan
    • 1
  • Flávia Giolo De Carvalho
    • 2
  • Vinicius Paula Venancio
    • 3
  • Lusânia Maria Greggi Antunes
    • 3
  • Marcelo Papoti
    • 2
  • Maricely Janette Uria Toro
    • 4
  • Iuri Ferreira da Costa
    • 4
  • Ellen Cristini de Freitas
    • 1
    • 2
    Email author
  1. 1.Department of Food and Nutrition. School of Pharmaceutical Sciences of AraraquaraState University of São Paulo, FCF UNESPAraraquaraBrazil
  2. 2.School of Physical Education and Sport of Ribeirão PretoUniversity of São Paulo, EEFERP/USPRibeirão PretoBrazil
  3. 3.School of Pharmaceutical Sciences of Ribeirão PretoUniversity of São Paulo, FCFRP/USPRibeirão PretoBrazil
  4. 4.Center of Natural Sciences and TechnologyState University of Pará, UEPABelémBrazil

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