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Keywords
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dietary supplementation,
electromyography,
neuromuscular training,
physical exercise,
rehabilitation.
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Abstract
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Background: Neuromuscular training (NMT) and supplementation with
essential minerals such as calcium (Ca), magnesium (Mg), and zinc (Zn) may
enhance muscular reaction time (RT) and electromechanical delay (EMD).
However, research on this topic, particularly among taekwondo athletes, is
limited.
Aim: This study aimed to evaluate the effects of NMT and Cal-Mg-Zn
supplementation on RT and EMD in taekwondo athletes.
Materials and Methods: Sixty athletes from a single taekwondo club in Tabriz,
Iran, were randomly assigned to four groups of fifteen: Control, Ca-Mg-Zn,
NMT, and Cal-Mg-Zn + NMT. NMT was conducted in 60 min sessions, four
times a week, for six consecutive weeks, prior to main taekwondo training.
RT and EMD were measured using electromyography before the
intervention (T1), three weeks after (T2), and six weeks after (T3). Data
were analyzed using SPSS with a confidence level greater than 0.95,
employing repeated measures ANOVA and Bonferroni post hoc tests.
Results: No significant differences in RT and EMD were observed among the
groups at baseline (P> 0.05). In both post-test assessments, the Cal-Mg-Zn
+ NMT group exhibited significantly lower RT and EMD compared to the
other groups (P< 0.05).
Conclusion: The inclusion of NMT with zinc supplementation can effectively
improve RT and EMD, thereby enhancing the athletic performance of
taekwondo athletes
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