Tags

Type your tag names separated by a space and hit enter

The effect of volume ingested on rehydration and gastric emptying following exercise-induced dehydration.
Med Sci Sports Exerc. 1994 Sep; 26(9):1135-43.MS

Abstract

The purpose of this study was to examine the effects of different drink volumes on rehydration, gastric emptying, and markers of fluid balance following exercise-induced dehydration. Nine male subjects (27.3 +/- 5.47 yr of age, 77.8 +/- 7.9 kg) exercised for 90 min (or until 2.5% of initial body weight was lost) on a cycle ergometer in a hot environment (30 degrees C with 60% RH). Following exercise, subjects were moved to a neutral environment (23 degrees C 50% RH) and rested for 30 min prior to beginning a 3-h rehydration period. During rehydration, subjects were serially fed with an electrolyte solution (14.98 mmol.l-1 Na+, 13.51 mmol.l-1 Cl-, and 7.95 mmol.l-1 K+) every 30 min with either 100% or 150% of the fluid lost during exercise. Gastric contents were determined every 15 min using double sampling. Blood samples, urine samples, and body weights were taken before and after exercise and at 1-h intervals throughout rehydration. Blood samples were analyzed for percent change in plasma volume, electrolyte concentration, aldosterone levels, and renin activity. Urine electrolyte concentrations were also measured. The final percent rehydration was 48.11 and 67.90 for the 100% and 150% conditions, respectively. During rehydration, the subjects emptied 98.9 and 86.0% of the fluid ingested, and the % emptied and used for weight gain at the end of rehydration was 55.1 and 54.6 for the 100% and 150% trials, respectively. Urine production was significantly higher in the 150 compared with the 100% condition while renin and aldosterone levels did not differ significantly.(

ABSTRACT

TRUNCATED AT 250 WORDS)

Authors+Show Affiliations

Exercise Physiology Laboratory, Texas Christian University, Fort Worth 76129.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

7808248

Citation

Mitchell, J B., et al. "The Effect of Volume Ingested On Rehydration and Gastric Emptying Following Exercise-induced Dehydration." Medicine and Science in Sports and Exercise, vol. 26, no. 9, 1994, pp. 1135-43.
Mitchell JB, Grandjean PW, Pizza FX, et al. The effect of volume ingested on rehydration and gastric emptying following exercise-induced dehydration. Med Sci Sports Exerc. 1994;26(9):1135-43.
Mitchell, J. B., Grandjean, P. W., Pizza, F. X., Starling, R. D., & Holtz, R. W. (1994). The effect of volume ingested on rehydration and gastric emptying following exercise-induced dehydration. Medicine and Science in Sports and Exercise, 26(9), 1135-43.
Mitchell JB, et al. The Effect of Volume Ingested On Rehydration and Gastric Emptying Following Exercise-induced Dehydration. Med Sci Sports Exerc. 1994;26(9):1135-43. PubMed PMID: 7808248.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of volume ingested on rehydration and gastric emptying following exercise-induced dehydration. AU - Mitchell,J B, AU - Grandjean,P W, AU - Pizza,F X, AU - Starling,R D, AU - Holtz,R W, PY - 1994/9/1/pubmed PY - 1994/9/1/medline PY - 1994/9/1/entrez SP - 1135 EP - 43 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 26 IS - 9 N2 - The purpose of this study was to examine the effects of different drink volumes on rehydration, gastric emptying, and markers of fluid balance following exercise-induced dehydration. Nine male subjects (27.3 +/- 5.47 yr of age, 77.8 +/- 7.9 kg) exercised for 90 min (or until 2.5% of initial body weight was lost) on a cycle ergometer in a hot environment (30 degrees C with 60% RH). Following exercise, subjects were moved to a neutral environment (23 degrees C 50% RH) and rested for 30 min prior to beginning a 3-h rehydration period. During rehydration, subjects were serially fed with an electrolyte solution (14.98 mmol.l-1 Na+, 13.51 mmol.l-1 Cl-, and 7.95 mmol.l-1 K+) every 30 min with either 100% or 150% of the fluid lost during exercise. Gastric contents were determined every 15 min using double sampling. Blood samples, urine samples, and body weights were taken before and after exercise and at 1-h intervals throughout rehydration. Blood samples were analyzed for percent change in plasma volume, electrolyte concentration, aldosterone levels, and renin activity. Urine electrolyte concentrations were also measured. The final percent rehydration was 48.11 and 67.90 for the 100% and 150% conditions, respectively. During rehydration, the subjects emptied 98.9 and 86.0% of the fluid ingested, and the % emptied and used for weight gain at the end of rehydration was 55.1 and 54.6 for the 100% and 150% trials, respectively. Urine production was significantly higher in the 150 compared with the 100% condition while renin and aldosterone levels did not differ significantly.(ABSTRACT TRUNCATED AT 250 WORDS) SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/7808248/The_effect_of_volume_ingested_on_rehydration_and_gastric_emptying_following_exercise_induced_dehydration_ DB - PRIME DP - Unbound Medicine ER -