Beetroot juice supplementation and aerobic training improve antioxidant capacity in female athletes
Objectives: The purpose of this study was to investigate whether beetroot juice can alter total antioxidant capacity (TAC) in female soccer players.
Methods: In this randomized clinical trial, female soccer players (n=20) were selected randomly and assigned into two groups: experimental (beetroot juice, n = 10) and control (placebo, n = 10). Subjects did their soccer training for six weeks (3 sessions per week for 90 min) with a consumption of 200 ml juice 2 hours before they started their training. Blood samples were collected and transferred to the laboratory. After separating the serum from the plasma, serum was put on the total antioxidant capacity' kits and total antioxidant capacity was investigated in the pretest and posttest.
Results: Findings showed that the experimental group had a significant increase in TAC after taking beetroot juice consumption (P<0.001) compared to baseline. Also, compared to the control group, there was a significant difference between experimental and control groups in TAC changes (P<0.001).
Conclusion: The present study provides evidence that 6 weeks of beetroot juice consumption positively affects TAC in female soccer players.
2. Young I, Woodside J. Antioxidants in health and disease. Journal of clinical pathology. 2001;54(3):176-86.
3. GeLaEF JF. Oxidative Stress Relationship with Exercise and Training. Sports Med 2006;36(4).
4. OSTOJIC SM. Elite and nonelite soccer players: preseasonal physical and physiological characteristics. Research in Sports Medicine. 2004;12(2):143-50.
5. Jahani G, Firoozrai M, Matin Homaee H, Tarverdizadeh B, Azarbayjani M, Movaseghi G, et al. The effect of continuous and regular exercise on erytrocyte antioxidative enzymes activity and stress oxidative in young soccer players. Razi Journal of Medical Sciences. 2010;17(74):22-32.
6. Wootton-Beard PC, Moran A, Ryan L. Stability of the total antioxidant capacity and total polyphenol content of 23 commercially available vegetable juices before and after in vitro digestion measured by FRAP, DPPH, ABTS and Folin–Ciocalteu methods. Food Research International. 2011;44(1):217-24.
7. Myburgh KH. Polyphenol supplementation: benefits for exercise performance or oxidative stress? Sports Medicine. 2014;44(1):57-70.
8. Rahimi P, Abedimanesh S, Mesbah Namin SA, Ostadrahimi A. Betalains, the nature-inspired pigments, in health and diseases. Critical reviews in food science and nutrition. 2018(just-accepted):00-.
9. Zohouri A, Tabatabaee Yazdi F, Mortazavi SA, Shahidi F. Comparison of efficiency and extraction of color and natural compounds from red beet by maceration and ultrasonic extraction methods. Journal of Food Science & Technology (2008-8787). 2016;13(52).
10. El-Beltagi HS, Mohamed HI, Megahed BM, Gamal M, Safwat G. EVALUATION OF SOME CHEMICAL CONSTITUENTS, ANTIOXIDANT, ANTIBACTERIAL AND ANTICANCER ACTIVITIES OF BETA VULGARIS L. ROOT. 2018.
11. Hoon MW, Jones AM, Johnson NA, Blackwell JR, Broad EM, Lundy B, et al. The effect of variable doses of inorganic nitrate-rich beetroot juice on simulated 2000-m rowing performance in trained athletes. International journal of sports physiology and performance. 2014;9(4):615-20.
12. Kujawska M, Ignatowicz E, Murias M, Ewertowska M, Mikołajczyk K, Jodynis-Liebert J. Protective effect of red beetroot against carbon tetrachloride-and N-nitrosodiethylamine-induced oxidative stress in rats. Journal of agricultural and food chemistry. 2009;57(6):2570-5.
13. Lu X, Wang Y, Zhang Z. Radioprotective activity of betalains from red beets in mice exposed to gamma irradiation. European Journal of Pharmacology. 2009;615(1-3):223-7.
14. El Gamal AA, AlSaid MS, Raish M, Al-Sohaibani M, Al-Massarani SM, Ahmad A, et al. Beetroot (Beta vulgaris L.) extract ameliorates gentamicin-induced nephrotoxicity associated oxidative stress, inflammation, and apoptosis in rodent model. Mediators of inflammation. 2014;2014.
15. Roth T. Benefits of beetroot supplementation on maximal exercise, blood pressure, and the redox state of blood: California State University, Long Beach; 2015.
16. Clifford T, Howatson G, West DJ, Stevenson EJ. The potential benefits of red beetroot supplementation in health and disease. Nutrients. 2015;7(4):2801-22.