Evans, G.H., Mattin, L.R., Ireland, I., Harrison, W., Yau, A.M.W., McIver, V., Pocock, T., Sheader, E. and James, L.J. 2018. Bolus ingestion of whey protein immediately post-exercise does not influence rehydration compared to energy-matched carbohydrate ingestion. Nutrients. 10 (6) 769. https://doi.org/10.3390/nu10060769
| Title | Bolus ingestion of whey protein immediately post-exercise does not influence rehydration compared to energy-matched carbohydrate ingestion |
|---|---|
| Type | Journal article |
| Authors | Evans, G.H., Mattin, L.R., Ireland, I., Harrison, W., Yau, A.M.W., McIver, V., Pocock, T., Sheader, E. and James, L.J. |
| Abstract | 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 ± 11.4 min; MD = 56.7 ± 6.3 min; p = 0.05); however, there was no difference in cumulative urine volume throughout the recovery period (WP = 1306 ± 306 mL; MD = 1428 ± 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. |
| Article number | 769 |
| Journal | Nutrients |
| Journal citation | 10 (6) |
| Year | 2018 |
| Publisher | MDPI |
| Publisher's version | License CC BY 4.0 File Access Level Open (open metadata and files) |
| Digital Object Identifier (DOI) | https://doi.org/10.3390/nu10060769 |
| Publication dates | |
| Published | 14 Jun 2018 |
| ISBN | 20726643 |