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A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index.
Am J Clin Nutr. 2016 Mar; 103(3):717-23.AJ

Abstract

BACKGROUND

The identification of beverages that promote longer-term fluid retention and maintenance of fluid balance is of real clinical and practical benefit in situations in which free access to fluids is limited or when frequent breaks for urination are not desirable. The postingestion diuretic response is likely to be influenced by several beverage characteristics, including the volume ingested, energy density, electrolyte content, and the presence of diuretic agents.

OBJECTIVE

This study investigated the effects of 13 different commonly consumed drinks on urine output and fluid balance when ingested in a euhydrated state, with a view to establishing a beverage hydration index (BHI), i.e., the volume of urine produced after drinking expressed relative to a standard treatment (still water) for each beverage.

DESIGN

Each subject (n = 72, euhydrated and fasted male subjects) ingested 1 L still water or 1 of 3 other commercially available beverages over a period of 30 min. Urine output was then collected for the subsequent 4 h. The BHI was corrected for the water content of drinks and was calculated as the amount of water retained at 2 h after ingestion relative to that observed after the ingestion of still water.

RESULTS

Total urine masses (mean ± SD) over 4 h were smaller than the still-water control (1337 ± 330 g) after an oral rehydration solution (ORS) (1038 ± 333 g, P < 0.001), full-fat milk (1052 ± 267 g, P < 0.001), and skimmed milk (1049 ± 334 g, P < 0.001). Cumulative urine output at 4 h after ingestion of cola, diet cola, hot tea, iced tea, coffee, lager, orange juice, sparkling water, and a sports drink were not different from the response to water ingestion. The mean BHI at 2 h was 1.54 ± 0.74 for the ORS, 1.50 ± 0.58 for full-fat milk, and 1.58 ± 0.60 for skimmed milk.

CONCLUSIONS

BHI may be a useful measure to identify the short-term hydration potential of different beverages when ingested in a euhydrated state. This trial was registered at www.isrctn.com as ISRCTN13014105.

Authors+Show Affiliations

School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom; r.j.maughan@lboro.ac.uk.School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom;School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom;School of Sport, Health and Exercise Sciences, Bangor University, Bangor, United Kingdom; and.School of Sport, Health and Exercise Sciences, Bangor University, Bangor, United Kingdom; and.School of Sport, Health and Exercise Sciences, Bangor University, Bangor, United Kingdom; and.School of Sport, University of Stirling, Stirling, United Kingdom.School of Sport, University of Stirling, Stirling, United Kingdom.

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26702122

Citation

Maughan, Ronald J., et al. "A Randomized Trial to Assess the Potential of Different Beverages to Affect Hydration Status: Development of a Beverage Hydration Index." The American Journal of Clinical Nutrition, vol. 103, no. 3, 2016, pp. 717-23.
Maughan RJ, Watson P, Cordery PA, et al. A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index. Am J Clin Nutr. 2016;103(3):717-23.
Maughan, R. J., Watson, P., Cordery, P. A., Walsh, N. P., Oliver, S. J., Dolci, A., Rodriguez-Sanchez, N., & Galloway, S. D. (2016). A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index. The American Journal of Clinical Nutrition, 103(3), 717-23. https://doi.org/10.3945/ajcn.115.114769
Maughan RJ, et al. A Randomized Trial to Assess the Potential of Different Beverages to Affect Hydration Status: Development of a Beverage Hydration Index. Am J Clin Nutr. 2016;103(3):717-23. PubMed PMID: 26702122.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index. AU - Maughan,Ronald J, AU - Watson,Phillip, AU - Cordery,Philip Aa, AU - Walsh,Neil P, AU - Oliver,Samuel J, AU - Dolci,Alberto, AU - Rodriguez-Sanchez,Nidia, AU - Galloway,Stuart Dr, Y1 - 2015/12/23/ PY - 2015/05/12/received PY - 2015/11/24/accepted PY - 2015/12/25/entrez PY - 2015/12/25/pubmed PY - 2016/7/9/medline KW - dehydration KW - electrolytes KW - euhydration KW - fluid balance KW - gastric emptying KW - intestinal absorption KW - macronutrients KW - rehydration KW - renal excretion KW - urine SP - 717 EP - 23 JF - The American journal of clinical nutrition JO - Am J Clin Nutr VL - 103 IS - 3 N2 - BACKGROUND: The identification of beverages that promote longer-term fluid retention and maintenance of fluid balance is of real clinical and practical benefit in situations in which free access to fluids is limited or when frequent breaks for urination are not desirable. The postingestion diuretic response is likely to be influenced by several beverage characteristics, including the volume ingested, energy density, electrolyte content, and the presence of diuretic agents. OBJECTIVE: This study investigated the effects of 13 different commonly consumed drinks on urine output and fluid balance when ingested in a euhydrated state, with a view to establishing a beverage hydration index (BHI), i.e., the volume of urine produced after drinking expressed relative to a standard treatment (still water) for each beverage. DESIGN: Each subject (n = 72, euhydrated and fasted male subjects) ingested 1 L still water or 1 of 3 other commercially available beverages over a period of 30 min. Urine output was then collected for the subsequent 4 h. The BHI was corrected for the water content of drinks and was calculated as the amount of water retained at 2 h after ingestion relative to that observed after the ingestion of still water. RESULTS: Total urine masses (mean ± SD) over 4 h were smaller than the still-water control (1337 ± 330 g) after an oral rehydration solution (ORS) (1038 ± 333 g, P < 0.001), full-fat milk (1052 ± 267 g, P < 0.001), and skimmed milk (1049 ± 334 g, P < 0.001). Cumulative urine output at 4 h after ingestion of cola, diet cola, hot tea, iced tea, coffee, lager, orange juice, sparkling water, and a sports drink were not different from the response to water ingestion. The mean BHI at 2 h was 1.54 ± 0.74 for the ORS, 1.50 ± 0.58 for full-fat milk, and 1.58 ± 0.60 for skimmed milk. CONCLUSIONS: BHI may be a useful measure to identify the short-term hydration potential of different beverages when ingested in a euhydrated state. This trial was registered at www.isrctn.com as ISRCTN13014105. SN - 1938-3207 UR - https://www.unboundmedicine.com/medline/citation/26702122/A_randomized_trial_to_assess_the_potential_of_different_beverages_to_affect_hydration_status:_development_of_a_beverage_hydration_index_ L2 - https://academic.oup.com/ajcn/article-lookup/doi/10.3945/ajcn.115.114769 DB - PRIME DP - Unbound Medicine ER -