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Amino Acids. 2019 Sep 3. doi: 10.1007/s00726-019-02775-6. [Epub ahead of print]

Oral taurine improves critical power and severe-intensity exercise tolerance.

Author information

1
College of Engineering, Swansea University, Swansea, SA1 8EN, UK. mark.waldron@swansea.ac.uk.
2
School of Science and Technology, University of New England, Armidale, NSW, Australia. mark.waldron@swansea.ac.uk.
3
Faculty of Sport, Health and Applied Sciences, St Mary's University, London, UK.
4
School of Biomedical Sciences, Newcastle University, Newcastle upon Tyne, UK.

Abstract

This study investigated the effects of acute oral taurine ingestion on: (1) the power-time relationship using the 3-min all-out test (3MAOT); (2) time to exhaustion (TTE) 5% > critical power (CP) and (3) the estimated time to complete (Tlim) a range of fixed target intensities. Twelve males completed a baseline 3MAOT test on a cycle ergometer. Following this, a double-blind, randomised cross-over design was followed, where participants were allocated to one of four conditions, separated by 72 h: TTE + taurine; TTE + placebo; 3MAOT + taurine; 3MAOT + placebo. Taurine was provided at 50 mg kg-1, whilst the placebo was 3 mg kg-1 maltodextrin. CP was higher (P < 0.05) in taurine (212 ± 36 W) than baseline (197 ± 40 W) and placebo (193 ± 35 W). Work end power was not affected by supplement (P > 0.05), yet TTE 5% > CP increased (P < 0.05) by 1.7 min after taurine (17.7 min) compared to placebo (16.0 min) and there were higher (P < 0.001) estimated Tlim across all work targets. Acute supplementation of 50 mg kg-1 of taurine improved CP and estimated performance at a range of severe work intensities. Oral taurine can be taken prior to exercise to enhance endurance performance.

KEYWORDS:

Amino acids; Critical power; Ergogenic aids

PMID:
31482309
DOI:
10.1007/s00726-019-02775-6

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