Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Effects of Short-term green tea extract supplementation on VO2max and inflammatory and antioxidant responses of healthy young men in a hot environment

(2020) Effects of Short-term green tea extract supplementation on VO2max and inflammatory and antioxidant responses of healthy young men in a hot environment. International Journal of Preventive Medicine. p. 7. ISSN 2008-7802

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Abstract

Background: Nowadays, the use of green tea supplements has increased. Studies have shown that green tea can have positive effects on anti-inflammatory and antioxidative factors, as well as improve aerobic performance capacity. Therefore, in this study, we investigate the effects of this supplement on inflammatory factors, total antioxidant capacity responses, and maximum oxygen uptake (VO2Max) of healthy young men in summer. Methods: This study is a double-blind randomized controlled trial (RCT) in which 15 young men (age 25.06 +/- 2.1) were randomly assigned into the green tea (GT) and placebo groups. Subjects performed maximum aerobic exercises (shuttle run 20 m) in separate workouts (14 days) in summer. They consumed 640 mg green tea extracts or maltodextrin 90 min before exercise in a double-blind design. Blood samples were collected before and after the exercise and then evaluated in the biochemistry laboratory. In this study, one way analysis of variance (ANOVA) tests were used for the statistical analysis. Results: The results of this study show that green tea supplement significantly slowed down the increasing tumor necrosis factor alpha (TNF-i +/-) (GT: 15.03 +/- 4.31 pg/ml, placebo: 31.38 +/- 7.18 pg/ml, P = 0.000); increased the total antioxidant capacity (GT: 1.04 +/- 0.06 mm, placebo group: 0.72 +/- 0.04 mm, P = 0.001 VO2); and Max (GT: 44.43 +/- 3.06 ml/kg/min, placebo group: 34.88 +/- 1.30 ml/kg/min, P = 0.001) in the supplement group than placebo. In addition, no significant differences in interleukin 1 beta (IL-1 beta) was observed between thee groups (GT: 26.86 +/- 5.05 pg/ml, placebo group: 23.47 +/- 3.16 pg/ml, P = 0.251). Conclusions: The consumption of green tea supplements 90 min before aerobic exercise may decrease inflammation and oxidative stress factors and improve VO2Max in summer.

Item Type: Article
Keywords: Exercise hot temperature inflammation oxidative stress tea induced oxidative stress blood-pressure exercise temperature parameters epigallocatechin-3-gallate polyphenols performance increases markers General & Internal Medicine
Page Range: p. 7
Journal or Publication Title: International Journal of Preventive Medicine
Journal Index: ISI
Volume: 11
Number: 1
Identification Number: https://doi.org/10.4103/ijpvm.IJPVM₆₄₁₉
ISSN: 2008-7802
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/8559

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