%0 Journal Article
%T Bolus Ingestion of Whey Protein Immediately Post-Exercise Does Not Influence Rehydration Compared to Energy-Matched Carbohydrate Ingestion
%A Adora M. W. Yau
%A Elizabeth Sheader
%A Gethin H. Evans
%A Isabelle Ireland
%A Lewis J. James
%A Lewis Mattin
%A Tristan Pocock
%A Victoria McIver
%A William Harrison
%J Archive of "Nutrients".
%D 2018
%R 10.3390/nu10060769
%X Whey protein is a commonly ingested nutritional supplement amongst athletes and regular exercisers; however, its role in post-exercise rehydration remains unclear. Eight healthy male and female participants completed two experimental trials involving the ingestion of 35 g of whey protein (WP) or maltodextrin (MD) at the onset of a rehydration period, followed by ingestion of water to a volume equivalent to 150% of the amount of body mass lost during exercise in the heat. The gastric emptying rates of the solutions were measured using 13C breath tests. Recovery was monitored for a further 3 h by the collection of blood and urine samples. The time taken to empty half of the initial solution (T1/2) was different between the trials (WP = 65.5 ¡À 11.4 min; MD = 56.7 ¡À 6.3 min; p = 0.05); however, there was no difference in cumulative urine volume throughout the recovery period (WP = 1306 ¡À 306 mL; MD = 1428 ¡À 443 mL; p = 0.314). Participants returned to net negative fluid balance 2 h after the recovery period with MD and 3 h with WP. The results of this study suggest that whey protein empties from the stomach at a slower rate than MD; however, this does not seem to exert any positive or negative effects on the maintenance of fluid balance in the post-exercise period
%K whey protein
%K maltodextrin
%K fluid balance
%K rehydration
%K gastric emptying
%K albumin
%K exercise
%K recovery
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6024862/