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Oral taurine improves critical power and severe-intensity exercise tolerance

Lookup NU author(s): Dr Owen JeffriesORCiD

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Abstract

This study investigated the effects of acute oral taurine ingestion on: i) the power-time relationship using the three-min all-out test (3MAOT); ii) time to exhaustion (TTE) 5% > critical power (CP) and iii) the estimated time to complete (T_lim) a range of fixed target intensities. Twelve males completed a baseline 3MAOT test on a cycle ergometer. Following this, a double-blind, randomized 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 T_lim 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.

Publication metadata

Author(s): Waldron M, Patterson SD, Jeffries O

Publication type: Article

Publication status: Published

Journal: Amino Acids

Year: 2019

Volume: 51

Pages: 1433-1441

Online publication date: 03/09/2019

Acceptance date: 16/08/2019

Date deposited: 28/08/2019

ISSN (print): 0939-4451

ISSN (electronic): 1438-2199

Publisher: Springer Wien

URL: https://doi.org/10.1007/s00726-019-02775-6

DOI: 10.1007/s00726-019-02775-6

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