Effect of various kinds of beverages on stress oxidative, F 2 isoprostane, serum lipid and blood glucose of elite taekwondo players

Zahra Maghsoudi, Afshin Shiranian, Gholamreza Askai, Reza Ghaisvand


Background: Athletes’ recovery is important in improving their performance. Nutritional strategies can be effective in enhancing recovery rate. Choosing the best food items in appropriate intervals can play effective roles in resynthesis of fuels and recovery of muscle injury. Beverage micro and macronutrient content are helpful in fuel restoration. In this study, we assess the effects of various kinds of beverages on oxidative stress, muscle injury, and metabolic risk factors in taekwondo players.
Materials and Methods: This quasi-experimental study was performed on 21 taekwondo players of Isfahan. After collecting fasting blood, they performed running based anaerobic sprint test (RAST). Blood lactate was tested again and participants were divided into 3 intervention groups, that is, receiving 500 cc dough, non-alcoholic beer, and chocolate milk at 4 day intervals. After a 2-h recovery period, blood sampling was repeated. Elites consumed other beverages in later phases. Dietary intake and fasting triglyceride, cholesterol, blood sugar, lactate dehydrogenase, and F2-isoprostane concentrations were determined. Data were analyzed with a simple repeated-measures test and post-hoc tests using the Statistical Package for the Social Sciences software.
Results: Data showed that cholesterol levels non‑significantly decreased after intervention. Triglyceride level was lower after taking dough and carbohydrate replacement drink. Blood glucose concentration increased after intervention periods, however, this increase was significant only after non‑alcoholic beverage consumption. Lactate dehydrogenase levels reduced after all cycles, however, F 2‑isoprostane level showed no significant change. There was not significant change in lactate dehydrogenase and F2-isoprostane levels.
Conclusions: Non‑alcoholic beer consumption can reduce lactate dehydrogenase concentration; however, it leads to blood sugar
increase. Moreover, dough consumption significantly reduced triglyceride level in taekwondo players.


Athletic performance; beverages; F2-isoprostanes; oxidative stress

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