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Effect of Drinking Rate on the Retention of Water or Milk Following Exercise-Induced Dehydration.

Abstract

This study investigated the effect of drinking rate on fluid retention of milk and water following exercise-induced dehydration. In Part A, 12 male participants lost 1.9% ± 0.3% body mass through cycle exercise on four occasions. Following exercise, plain water or low-fat milk equal to the volume of sweat lost during exercise was provided. Beverages were ingested over 30 or 90 min, resulting in four beverage treatments: water 30 min, water 90 min, milk 30 min, and milk 90 min. In Part B, 12 participants (nine males and three females) lost 2.0% ± 0.3% body mass through cycle exercise on four occasions. Following exercise, plain water equal to the volume of sweat lost during exercise was provided. Water was ingested over 15 min (DR15), 45 min (DR45), or 90 min (DR90), with either DR15 or DR45 repeated. In both trials, nude body mass, urine volume, urine specific gravity and osmolality, plasma osmolality, and subjective ratings of gastrointestinal symptoms were obtained preexercise and every hour for 3 hr after the onset of drinking. In Part A, no effect of drinking rate was observed on the proportion of fluid retained, but milk retention was greater (p < .01) than water (water 30 min: 57% ± 16%, water 90 min: 60% ± 20%, milk 30 min: 83% ± 6%, and milk 90 min: 85% ± 7%). In Part B, fluid retention was greater in DR90 (57% ± 13%) than DR15 (50% ± 11%, p < .05), but this was within test-retest variation determined from the repeated trials (coefficient of variation: 17%). Within the range of drinking rates investigated the nutrient composition of a beverage has a more pronounced impact on fluid retention than the ingestion rate.

Authors+Show Affiliations

Griffith University.University of Stirling.University of Stirling.Griffith University.University of Sydney.Bond University.University of Stirling.Griffith University.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31801109

Citation

Sayer, Liam, et al. "Effect of Drinking Rate On the Retention of Water or Milk Following Exercise-Induced Dehydration." International Journal of Sport Nutrition and Exercise Metabolism, 2019, pp. 1-11.
Sayer L, Rodriguez-Sanchez N, Rodriguez-Giustiniani P, et al. Effect of Drinking Rate on the Retention of Water or Milk Following Exercise-Induced Dehydration. Int J Sport Nutr Exerc Metab. 2019.
Sayer, L., Rodriguez-Sanchez, N., Rodriguez-Giustiniani, P., Irwin, C., McCartney, D., Cox, G. R., ... Desbrow, B. (2019). Effect of Drinking Rate on the Retention of Water or Milk Following Exercise-Induced Dehydration. International Journal of Sport Nutrition and Exercise Metabolism, pp. 1-11. doi:10.1123/ijsnem.2019-0176.
Sayer L, et al. Effect of Drinking Rate On the Retention of Water or Milk Following Exercise-Induced Dehydration. Int J Sport Nutr Exerc Metab. 2019 Dec 4;1-11. PubMed PMID: 31801109.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of Drinking Rate on the Retention of Water or Milk Following Exercise-Induced Dehydration. AU - Sayer,Liam, AU - Rodriguez-Sanchez,Nidia, AU - Rodriguez-Giustiniani,Paola, AU - Irwin,Christopher, AU - McCartney,Danielle, AU - Cox,Gregory R, AU - Galloway,Stuart D R, AU - Desbrow,Ben, Y1 - 2019/12/04/ PY - 2019/06/09/received PY - 2019/08/25/revised PY - 2019/09/12/accepted PY - 2019/12/5/entrez PY - 2019/12/5/pubmed PY - 2019/12/5/medline KW - fluid balance KW - hypohydration KW - nutrition KW - rehydration SP - 1 EP - 11 JF - International journal of sport nutrition and exercise metabolism JO - Int J Sport Nutr Exerc Metab N2 - This study investigated the effect of drinking rate on fluid retention of milk and water following exercise-induced dehydration. In Part A, 12 male participants lost 1.9% ± 0.3% body mass through cycle exercise on four occasions. Following exercise, plain water or low-fat milk equal to the volume of sweat lost during exercise was provided. Beverages were ingested over 30 or 90 min, resulting in four beverage treatments: water 30 min, water 90 min, milk 30 min, and milk 90 min. In Part B, 12 participants (nine males and three females) lost 2.0% ± 0.3% body mass through cycle exercise on four occasions. Following exercise, plain water equal to the volume of sweat lost during exercise was provided. Water was ingested over 15 min (DR15), 45 min (DR45), or 90 min (DR90), with either DR15 or DR45 repeated. In both trials, nude body mass, urine volume, urine specific gravity and osmolality, plasma osmolality, and subjective ratings of gastrointestinal symptoms were obtained preexercise and every hour for 3 hr after the onset of drinking. In Part A, no effect of drinking rate was observed on the proportion of fluid retained, but milk retention was greater (p < .01) than water (water 30 min: 57% ± 16%, water 90 min: 60% ± 20%, milk 30 min: 83% ± 6%, and milk 90 min: 85% ± 7%). In Part B, fluid retention was greater in DR90 (57% ± 13%) than DR15 (50% ± 11%, p < .05), but this was within test-retest variation determined from the repeated trials (coefficient of variation: 17%). Within the range of drinking rates investigated the nutrient composition of a beverage has a more pronounced impact on fluid retention than the ingestion rate. SN - 1543-2742 UR - https://www.unboundmedicine.com/medline/citation/31801109/Effect_of_Drinking_Rate_on_the_Retention_of_Water_or_Milk_Following_Exercise-Induced_Dehydration L2 - https://journals.humankinetics.com/doi/10.1123/ijsnem.2019-0176 DB - PRIME DP - Unbound Medicine ER -