Document Type : Research Paper I Open Access I Released under (CC BY-NC) license
Author
University Of Tehran
Abstract
Introduction: This study investigated the role of taurine supplementation combined with resistance training on vascular and performance indices in elite male taekwondo athletes.
Methodology: The quasi-experimental study was conducted on 24 elite male athletes, randomly assigned to three groups of eight: taekwondo training (T), resistance plus taekwondo training with placebo (RTP), and resistance plus taekwondo training with taurine supplementation (RTT). The resistance training protocol followed a nonlinear format for six weeks, three sessions per week. Supplementation involved daily intake of two to four 1000 mg capsules of taurine or rice flour placebo in a double-blind manner. Before and after the intervention, nitric oxide, endothelin-1, epinephrine, norepinephrine, testosterone, muscular explosive power, and blood lactate were measured. Data were analyzed using two-way repeated measures ANOVA and Tukey’s post hoc test.
Results: Serum testosterone significantly increased in RTT and RTP compared to T (P = 0.016), and explosive power was significantly higher in RTT compared to both other groups (P = 0.002). Although nitric oxide changes were not statistically significant among groups, levels increased by 17%, 24%, and 45% in T, RTP, and RTT, respectively. Changes in epinephrine, norepinephrine, endothelin, and lactate were not statistically significant (P > 0.05).
Conclusion: The results of this study showed that combining resistance training with taurine supplementation could potentially have a positive effect on serum testosterone and explosive power in elite taekwondo athletes.
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