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Drink temperature influences fluid intake and endurance capacity in men during exercise in a hot, dry environment.
Exp Physiol 2006; 91(5):925-33EP

Abstract

The effect of different drink temperatures on the perception of exertion and exercise endurance has not been extensively investigated. Consequently, the purpose of the present study was to examine the effect of drink temperature on fluid intake and endurance during cycling in the heat. Eight healthy, non-acclimated males (26 +/- 7 years; maximum oxygen uptake, 54 +/- 5 ml kg(-1) min(-1); mean +/- S.D.) cycled to exhaustion at 34 degrees C and at 65% of their peak aerobic power, consuming a drink at either 19 degrees C (CON) or 4 degrees C (COLD). Six of the eight subjects cycled for longer during COLD, with exhaustion occurring at 62 +/- 4 min, compared to 55 +/- 4 min for CON (P < 0.05; mean +/- S.E.M.). Subjects consumed significantly more fluid during COLD compared to CON (1.3 +/- 0.3 l h(-1) compared to 1.0 +/- 0.2 l h(-1); P < 0.05). Heart rate tended to be lower by approximately 5 beats min(-1) during COLD, and rectal temperature during the second half of the exercise period was approximately 0.25 degrees C lower during the COLD trial; however, these trends were not significant (P = 0.08 and P = 0.07, respectively). No differences were observed between trials for ventilation, concentrations of prolactin, glucose and lactate or perceived exertion. It is concluded that a drink at 4 degrees C during exercise in the heat enhances fluid consumption and improves endurance by acting as a heat sink, attenuating the rise in body temperature and therefore reducing the effects of heat stress.

Authors+Show Affiliations

School of Sport and Exercise Sciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. t.mundel@bham.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article

Language

eng

PubMed ID

16777932

Citation

Mündel, Toby, et al. "Drink Temperature Influences Fluid Intake and Endurance Capacity in Men During Exercise in a Hot, Dry Environment." Experimental Physiology, vol. 91, no. 5, 2006, pp. 925-33.
Mündel T, King J, Collacott E, et al. Drink temperature influences fluid intake and endurance capacity in men during exercise in a hot, dry environment. Exp Physiol. 2006;91(5):925-33.
Mündel, T., King, J., Collacott, E., & Jones, D. A. (2006). Drink temperature influences fluid intake and endurance capacity in men during exercise in a hot, dry environment. Experimental Physiology, 91(5), pp. 925-33.
Mündel T, et al. Drink Temperature Influences Fluid Intake and Endurance Capacity in Men During Exercise in a Hot, Dry Environment. Exp Physiol. 2006;91(5):925-33. PubMed PMID: 16777932.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Drink temperature influences fluid intake and endurance capacity in men during exercise in a hot, dry environment. AU - Mündel,Toby, AU - King,Jenny, AU - Collacott,Esther, AU - Jones,David A, Y1 - 2006/06/15/ PY - 2006/6/17/pubmed PY - 2006/10/31/medline PY - 2006/6/17/entrez SP - 925 EP - 33 JF - Experimental physiology JO - Exp. Physiol. VL - 91 IS - 5 N2 - The effect of different drink temperatures on the perception of exertion and exercise endurance has not been extensively investigated. Consequently, the purpose of the present study was to examine the effect of drink temperature on fluid intake and endurance during cycling in the heat. Eight healthy, non-acclimated males (26 +/- 7 years; maximum oxygen uptake, 54 +/- 5 ml kg(-1) min(-1); mean +/- S.D.) cycled to exhaustion at 34 degrees C and at 65% of their peak aerobic power, consuming a drink at either 19 degrees C (CON) or 4 degrees C (COLD). Six of the eight subjects cycled for longer during COLD, with exhaustion occurring at 62 +/- 4 min, compared to 55 +/- 4 min for CON (P < 0.05; mean +/- S.E.M.). Subjects consumed significantly more fluid during COLD compared to CON (1.3 +/- 0.3 l h(-1) compared to 1.0 +/- 0.2 l h(-1); P < 0.05). Heart rate tended to be lower by approximately 5 beats min(-1) during COLD, and rectal temperature during the second half of the exercise period was approximately 0.25 degrees C lower during the COLD trial; however, these trends were not significant (P = 0.08 and P = 0.07, respectively). No differences were observed between trials for ventilation, concentrations of prolactin, glucose and lactate or perceived exertion. It is concluded that a drink at 4 degrees C during exercise in the heat enhances fluid consumption and improves endurance by acting as a heat sink, attenuating the rise in body temperature and therefore reducing the effects of heat stress. SN - 0958-0670 UR - https://www.unboundmedicine.com/medline/citation/16777932/Drink_temperature_influences_fluid_intake_and_endurance_capacity_in_men_during_exercise_in_a_hot_dry_environment_ L2 - https://doi.org/10.1113/expphysiol.2006.034223 DB - PRIME DP - Unbound Medicine ER -