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Lookup NU author(s): Dr Owen JeffriesORCiD
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Taylor and Francis, 2019.
For re-use rights please refer to the publisher's terms and conditions.
This study investigated the effects of oral taurine supplementation on cycling time to exhaustion at a fixed-intensity and thermoregulation in the heat. In a double-blind, randomised crossover design, 11 healthy males participated in a time to exhaustion test in the heat (35°C, 40% RH), cycling at the power output associated with ventilatory threshold, 2 h after ingesting: Taurine (50 mg kg−1) or placebo (3 mg kg−1 maltodextrin). Core and mean skin temperature, mean sweat rate, heart rate, rating of perceived exertion (RPE), thermal comfort and thermal sensation were measured during exercise and blood lactate concentration (B[La]) was measured after exercise. Taurine supplementation increased time to exhaustion by 10% (25.16 min vs. 22.43 min, p = 0.040), end sweat rate by 12.7% (687 nL min−1 vs. 600 nL min−1, p = 0.034) and decreased B[La] by 16.5% (5.75 mmol L−1 vs. 6.85 mmol L−1, p = 0.033). Core temperature was lower in the final 10% of the time to exhaustion (38.5°C vs. 38.1°C, p = 0.049). Taurine supplementation increased time to exhaustion and local sweating, while decreasing RPE and core temperature in the later stages of exercise, as well as reducing post-exercise B[La]. This study provides the evidence of taurine's role in thermoregulatory processes. These findings have implications for the short-term preparation strategies of individuals exercising in the heat. Based on these findings, a single dose of taurine 2 h prior to training or competition would provide an ergogenic and thermoregulatory effect.
Author(s): Page LK, Jeffries O, Waldron M
Publication type: Article
Publication status: Published
Journal: European Journal of Sport Science
Online publication date: 18/02/2019
Acceptance date: 29/01/2019
Date deposited: 19/02/2019
ISSN (print): 1746-1391
ISSN (electronic): 1536-7290
Publisher: Taylor and Francis
PubMed id: 30776254
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