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James, L.J., Evans, G.H., Madin, J., Scott, D., Stepney, M., Harris, R., Stone, R. and Clayton, D.J. 
ORCID: 0000-0001-5481-0891,
2013.
Effect of varying the concentrations of carbohydrate and milk protein in rehydration solutions ingested after exercise in the heat.
British Journal of Nutrition, 110 (7), pp. 1285-1291.
ISSN 0007-1145
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Abstract
The present study investigated the relationship between the milk protein content of a rehydration solution and fluid balance after exercise-induced dehydration. On three occasions, eight healthy males were dehydrated to an identical degree of body mass loss (BML, approximately 1.8 %) by intermittent cycling in the heat, rehydrating with 150 % of their BML over 1 h with either a 60 g/l carbohydrate solution (C), a 40 g/l carbohydrate, 20 g/l milk protein solution (CP20) or a 20 g/l carbohydrate, 40 g/l milk protein solution (CP40). Urine samples were collected pre-exercise, post-exercise, post-rehydration and for a further 4 h. Subjects produced less urine after ingesting the CP20 or CP40 drink compared with the C drink (P<0.01), and at the end of the study, more of the CP20 (59 (SD 12) %) and CP40 (64 (SD 6) %) drinks had been retained compared with the C drink (46 (SD 9) %) (P,0.01). At the end of the study, whole-body net fluid balance was more negative for trial C (2470 (SD 154) ml) compared with both trials CP20 (2181 (SD 280) ml) and CP40 (2107 (SD 126) ml) (P<0.01). At 2 and 3 h after drink ingestion, urine osmolality was greater for trials CP20 and CP40 compared with trial C (P<0.05). The present study further demonstrates that after exercise-induced dehydration, a carbohydrate–milk protein solution is better retained than a carbohydrate solution. The results also suggest that high concentrations of milk protein are not more beneficial in terms of fluid retention than low concentrations of milk protein following exercise-induced dehydration.
| Item Type: | Journal article | ||||||
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| Publication Title: | British Journal of Nutrition | ||||||
| Creators: | James, L.J., Evans, G.H., Madin, J., Scott, D., Stepney, M., Harris, R., Stone, R. and Clayton, D.J. | ||||||
| Date: | 31 May 2013 | ||||||
| Volume: | 110 | ||||||
| Number: | 7 | ||||||
| ISSN: | 0007-1145 | ||||||
| Identifiers: |
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| Divisions: | Schools > School of Science and Technology | ||||||
| Record created by: | Jonathan Gallacher | ||||||
| Date Added: | 24 Oct 2017 08:38 | ||||||
| Last Modified: | 24 Oct 2017 08:38 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/31857 |
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