Physiological and thermoregulatory effects of oral taurine supplementation on exercise tolerance during forced convective cooling

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 ∼ 4°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.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:22

Enthalten in:

European journal of sport science - 22(2022), 2 vom: 02. Feb., Seite 209-217

Sprache:

Englisch

Beteiligte Personen:

Simmonds, Richard [VerfasserIn]
Cole, James [VerfasserIn]
Tallent, Jamie [VerfasserIn]
Jeffries, Owen [VerfasserIn]
Theis, Nicola [VerfasserIn]
Waldron, Mark [VerfasserIn]

Links:

Volltext

Themen:

1EQV5MLY3D
Amino acids
Cycling
Environmental physiology
Ergogenic aids
Journal Article
Taurine

Anmerkungen:

Date Completed 10.03.2022

Date Revised 31.05.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1080/17461391.2020.1858175

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM319214567