ORIGINAL RESEARCH article
Front. Nutr.
Sec. Sport and Exercise Nutrition
Volume 12 - 2025 | doi: 10.3389/fnut.2025.1632131
This article is part of the Research TopicNutritional Challenges and Innovations in Extreme EnvironmentsView all 3 articles
Dose-Response Relationship of Taurine on Endurance Cycling Performance under Hot and Humid Conditions
Provisionally accepted
- 1Xi‘an University of Finance and Economics, Xi'an, China
- 2Zhengzhou Tourism College, Zhengzhou, China
- 3Fuzhou University, Fuzhou, China
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To investigate the effects of different doses of taurine on endurance exercise performance and physiological parameters under hot and humid conditions.This study adopted a double-blind, randomized, placebo-controlled, cross-over design. Sixteen male university students majoring in physical education (age: 20.12 ± 1.12 years; training status: ≥3 endurance sessions/week) received 4 supplement conditions: (1) placebo (maltodextrin), (2) low-dose (1g taurine), (3) medium-dose (4g taurine), and (4) high-dose (6g taurine). Participants performed a graded cycling test (initial 50 W, +50 W every 3 min at 70 rpm) until exhaustion in an environmental chamber (35°C, 65% RH). Heart rate, core temperature, skin temperature, sweat rate, RPE, and thermal sensation were measured.Results: Compared to placebo, time to exhaustion was significantly longer in the medium-dose group (p<0.05), with no significant or trend-level effects in low-or high-dose groups. Blood lactate accumulation and sweating rate were higher in the medium-dose group (p<0.05). Core temperature (9min-End) was lower in the medium-dose group during the latter exercise phase (p<0.05).Under hot and humid conditions, acute 4g taurine supplementation enhanced time to exhaustion during graded cycling by improving thermoregulatory responses, whereas 1g and 6g doses showed no ergogenic effects.
Keywords: Taurine, Endurance Cycling Performance, Hot and humid condition, dosage, Thermoregulatory responses
Received: 20 May 2025; Accepted: 19 Sep 2025.
Copyright: © 2025 Wang, Huo and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Wenjuan Zhang, zhangwenjuan901101@163.com
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