The acute effect of Taurine supplementation on fat oxidation and ventilatory threshold in 25-45 years-old obese women

Document Type : Research Paper

Authors

1 Department of exercise physiology, Faculty of physical education and sport science, Shahid Bahonar University of Kerman, Kerman, Iran

2 Faculty of Sports Sciences, Shahid Bahonar University of Kerman, Kerman, Iran

3 Department of exercise physiology, Faculty of physical education and sport science, Shahid Bahonar University of kerman, Kerman, Iran

Abstract

Objectives: The current study aimed to investigate the effect of Taurine supplementation on fat oxidation and physiological variables corresponding to anaerobic threshold (AT) in 25-45 years-old obese women.
Methods and materials: 11 obese women (BMI=33.1 ± 3.2) were purposely selected and performed a standard incremental test before and after 21 days of Taurine oral consumption (50 mg/kg). Blood samples were taken before and after each test and respiratory gases were analyzed breath by breath throughout the test. AT was determined as an abrupt increase in ventilatory equivalent of oxygen (VE/VO2). Fat oxidation was evaluated using the values of respiratory gas exchange (RER) and fat oxidation during incremental test and the changes in plasma levels of triglyceride (TG).
Results: The results of repeated analysis of variance showed that 21 days of Taurine supplementation causes a significant decrease in resting level of plasma triglyceride levels (P < 0.05), RER (P < 0.05), and fat oxidation during exercise (P < 0.05) compared to those values before supplementation. Nevertheless, the paired t-test results showed that Taurine supplementation has no significant effect on oxygen consumption and heart rate corresponding to AT during incremental test.

Conclusion: In summary, the results of the current study showed that Taurine supplementation is associated with increase in fat oxidation during rest and exercise but its effect doesn’t improve endurance performance at the level of AT.

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History

  • Receive Date: 01 September 2024
  • Revise Date: 06 February 2025
  • Accept Date: 26 May 2024

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