Journal ArticleDOI
The Effect of Acute Taurine Ingestion on Human Maximal Voluntary Muscle Contraction
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Taurine ingestion is detrimental to maximal voluntary muscle power and both maximal isokinetic and isometric peak torque in noncaffeine consumers, whereas taurine ingested in caffeine-deprived caffeine consumers improves maximal voluntary Muscle power but has no effect on other aspects of contractile performance.Abstract:
Purpose This study aimed to examine the effect of taurine ingestion on maximal voluntary muscle torque and power in trained male athletes with different caffeine habits. Methods Fourteen male athletes 21.8 ± 2.5 yr old were separated into caffeine and noncaffeine consumers to control for the effect of caffeine withdrawal on muscle function. On separate occasions, participants performed four isokinetic or three maximal isometric knee extensions with and without taurine (40 mg·kg−1 body mass) after a double-blind, counterbalanced design. Muscle contractile performances were compared between the first sets as well as between the sets where these variables scored best. Results In response to isokinetic contraction, taurine treatment in the noncaffeine consumers resulted in a significant fall in first (−16.1%; P = 0.013) and best peak torque (−5.0%; P = 0.016) as well as in first (−17.7%; P = 0.015) and best power output (−8.0%; P = 0.008). In the caffeine consumers deprived of caffeine, taurine intake improved best power (5.2%; P = 0.045). With respect to the isometric variables, there was a significant decrease in the first (−5.1%; P = 0.002) and best peak torque (−4.3%; P = 0.032) in the noncaffeine group, but no effect in the group of caffeine consumers deprived of caffeine. Taurine ingestion increased blood taurine levels but had no effect on plasma amino acid levels. Conclusions Taurine ingestion is detrimental to maximal voluntary muscle power and both maximal isokinetic and isometric peak torque in noncaffeine consumers, whereas taurine ingestion in caffeine-deprived caffeine consumers improves maximal voluntary muscle power but has no effect on other aspects of contractile performance.read more
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Taurine in sports and exercise
TL;DR: Taurine has become a popular supplement among athletes attempting to improve performance as mentioned in this paper, however, the effectiveness of taurine as an ergogenic aid remains controversial, while the current evidence regarding the efficacy of Taurine in aerobic and anaerobic performance, metabolic stress, muscle soreness, and recovery.
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Acute Effects of an “Energy Drink” on Short-Term Maximal Performance, Reaction Times, Psychological and Physiological Parameters: Insights from a Randomized Double-Blind, Placebo-Controlled, Counterbalanced Crossover Trial
TL;DR: It is concluded that RB ingestion has a positive effect on physical performance and reaction times and is related to ergogenic responses in both psychological and physiological domains.
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Oral taurine improves critical power and severe-intensity exercise tolerance
TL;DR: Acute supplementation of 50 mg kg−1 of taurine improved CP and estimated performance at a range of severe work intensities and estimated time to complete (Tlim) arange of fixed target intensities.
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Energy drinks do not alter aerobic fitness assessment using field tests in healthy adults regardless of physical fitness status
Roberta Luksevicius Rica,Alexandre Lopes Evangelista,Adriano Fortes Maia,Alexandre Fernandes Machado,Cauê Vazquez La Scala Teixeira,Welmo A. Barbosa,Fernando N. Hacbart,Mauro Antonio Guerra Junior,Lucas Guimarães Ferreira,João Henrique Gomes,Renata Rebello Mendes,João M. D. Miranda,Michell Vetoraci Viana,Julien S. Baker,Danilo Sales Bocalini +14 more
TL;DR: Data from the present study demonstrated that the use of energy drinks does not enhance performance of amateur runners regardless of the level of physical fitness.
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Physiological and thermoregulatory effects of oral taurine supplementation on exercise tolerance during forced convective cooling.
Richard Simmonds,James Cole,Jamie Tallent,Owen Jeffries,Nicola Theis,Mark Waldron,Mark Waldron +6 more
TL;DR: A 50 mg·kg−1 dose of taurine did not statistically benefit endurance exercise after moderate cold exposure but conferred some potential vascular and metabolic effects.
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