PMID- 33357070 OWN - NLM STAT- MEDLINE DCOM- 20220310 LR - 20220531 IS - 1536-7290 (Electronic) IS - 1536-7290 (Linking) VI - 22 IP - 2 DP - 2022 Feb TI - Physiological and thermoregulatory effects of oral taurine supplementation on exercise tolerance during forced convective cooling. PG - 209-217 LID - 10.1080/17461391.2020.1858175 [doi] AB - AbstractWe investigated the effects of taurine supplementation on cycling time to exhaustion in cold conditions. Eleven males cycled to exhaustion at a power output equivalent to the mid-point between ventilatory threshold and maximum aerobic power following 15-min rest in the cold (apparent temperature of approximately 4 degrees C; air flow of 4.17 m s(-1)). Two hours before, participants ingested taurine (50 mg.kg(-1)) or placebo beverage. Pulmonary gases, carbohydrate (CHO) and fat oxidation, body temperatures, mean local sweat rate, heart rate, rate of perceived exertion (RPE) and thermal comfort were recorded. Time to exhaustion was not different between trials (taurine = 14.6 +/- 4.7 min; placebo = 13.4 +/- 5.6 min, P = 0.061, d = 0.27). There were no effects (P > 0.05) of taurine on core temperature, mean skin temperature or local sweat rates. However, the placebo condition showed greater (P < 0.05) reductions in arm-to-finger temperature gradient (i.e. vasodilation) across pre-exercise passive cold exposure and increased CHO oxidation (P < 0.05). Participants also reached a thermally 'comfortable' level quicker in the taurine condition (P < 0.05). A 50 mg.kg(-1) dose of taurine did not statistically benefit endurance exercise after moderate cold exposure but conferred some potential vascular and metabolic effects. FAU - Simmonds, Richard AU - Simmonds R AD - School of Sport, Health and Applied Science, St Mary's University, London, UK. FAU - Cole, James AU - Cole J AD - School of Sport, Health and Applied Science, St Mary's University, London, UK. FAU - Tallent, Jamie AU - Tallent J AD - School of Sport, Health and Applied Science, St Mary's University, London, UK. FAU - Jeffries, Owen AU - Jeffries O AUID- ORCID: 0000-0002-8169-1100 AD - School of Biomedical Sciences, Newcastle University, Newcastle Upon Tyne, UK. FAU - Theis, Nicola AU - Theis N AD - School of Sport and Exercise, University of Gloucestershire, Gloucestershire, UK. FAU - Waldron, Mark AU - Waldron M AUID- ORCID: 0000-0002-2720-4615 AD - A-STEM Centre, College of Engineering, Swansea University, Swansea, UK. AD - School of Science and Technology, University of New England, Armidale, Australia. AD - Welsh Institute of Performance Science, Swansea University, Swansea, UK. LA - eng PT - Journal Article DEP - 20201225 PL - Germany TA - Eur J Sport Sci JT - European journal of sport science JID - 101146739 RN - 1EQV5MLY3D (Taurine) SB - IM MH - Body Temperature/physiology MH - *Body Temperature Regulation/drug effects/physiology MH - Cold Temperature MH - Dietary Supplements MH - *Exercise Tolerance/drug effects/physiology MH - Humans MH - Male MH - Skin Temperature MH - *Taurine/administration & dosage OTO - NOTNLM OT - Amino acids OT - cycling OT - environmental physiology OT - ergogenic aids EDAT- 2020/12/29 06:00 MHDA- 2022/03/11 06:00 CRDT- 2020/12/28 10:13 PHST- 2020/12/29 06:00 [pubmed] PHST- 2022/03/11 06:00 [medline] PHST- 2020/12/28 10:13 [entrez] AID - 10.1080/17461391.2020.1858175 [doi] PST - ppublish SO - Eur J Sport Sci. 2022 Feb;22(2):209-217. doi: 10.1080/17461391.2020.1858175. Epub 2020 Dec 25.