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Acute taurine supplementation enhances thermoregulation and endurance cycling performance in the heat

Acute taurine supplementation enhances thermoregulation and endurance cycling performance in the heat
Acute taurine supplementation enhances thermoregulation and endurance cycling performance in the heat
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.
1746-1391
1101-1109
Page, Lee, Kevin
541eea0a-19ec-4326-bce2-b2931b393fbf
Jeffries, Owen
d0855df3-97f7-4c4d-af6c-854408e520d5
Waldron, Mark
da4fce6d-d9d5-463d-85f3-0060c7098b6d
Page, Lee, Kevin
541eea0a-19ec-4326-bce2-b2931b393fbf
Jeffries, Owen
d0855df3-97f7-4c4d-af6c-854408e520d5
Waldron, Mark
da4fce6d-d9d5-463d-85f3-0060c7098b6d

Page, Lee, Kevin, Jeffries, Owen and Waldron, Mark (2019) Acute taurine supplementation enhances thermoregulation and endurance cycling performance in the heat. European Journal of Sport Science, 19 (8), 1101-1109. (doi:10.1080/17461391.2019.1578417).

Record type: Article

Abstract

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.

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More information

Published date: 18 February 2019

Identifiers

Local EPrints ID: 450244
URI: http://eprints.soton.ac.uk/id/eprint/450244
ISSN: 1746-1391
PURE UUID: d1d10018-d7a6-4255-a132-4eee580c107a
ORCID for Lee, Kevin Page: ORCID iD orcid.org/0000-0001-7435-1813

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Date deposited: 16 Jul 2021 16:37
Last modified: 11 May 2024 02:01

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Contributors

Author: Lee, Kevin Page ORCID iD
Author: Owen Jeffries
Author: Mark Waldron

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