As the protein in milk helps the Rehydration after exercise

We all know that during exercise, sweat losses exceed fluid intake, and that many individuals end the year in a state of hypo-hydration. In situations where individuals finish the year in a state of hypo-hydration, rehydration after exercise is necessary. If there is no exercise more, restoring the water balance can be achieved by following the normal eating habits, but in situations where two sets of exercises are performed one after the other in rehydration of the first series exercise will have to be quick and effective so that performance in the second series of exercises is not compromised.

In the past 30 years have investigated the dehydration - rehydration after exercise-induced, and the main factors affecting the rehydration after exercise have been identified as the volume and composition of rehydration solution. It has been shown that for complete recovery of fluid balance, the volume of fluid consumed should be greater than the volume of sweat lost to account for ongoing fluid losses that occur after exercise and consumption of drinks. While the ingestion of a liquid volume greater than the mass loss of fluid balance is restored in the short term, this does not mean the restoration of fluid balance is maintained. For the effective retention of the ingested solution, its composition is of vital importance.

Some research has shown that consumption of solutions containing protein after exercise dehydration - induced may confer some advantage in terms of retention on the protein-free solutions. The purpose of this study was therefore to examine the specific effects of milk protein in rehydration after exercise in the heat.

Eight healthy male subjects volunteered to participate in this study, which was approved by the Nottingham Trent University School of Science and Technology Ethical Advisory Committee. The physical characteristics of the subjects are as follows: 21 years of age, height 1.78 m and with body mass of 75.7 kg

The results of this research indicate that, following a 1.9% reduction in body mass by intermittent exercise in a hot environment, 40 g / l of carbohydrates, 25 g / l of milk protein solution was retained better than a 65 g / l solution of carbohydrates, when the volume of fluid ingested is equivalent to 150% of the total loss of exercise-induced mass loss. The solutions were equal in terms of energy density and fat content and in terms of concentrations of na. and K.

The final results underscore the importance of the composition of the drink to ensure complete recovery of fluid balance after exercise.

While drinking enough fluids to replace loss through sweating is vital to the rehydration process is usually ingested fluid composition determines the amount of fluid that stays in the body.

To our knowledge, this is the first study performed to specifically investigate the addition of protein rehydration solutions after exercise, the same combination in terms of energy density and electrolyte content. The results of this study suggest that at least of fluid retention was observed with higher protein intake low fat milk compared to that observed with a sports drink with carbohydrates and electrolytes

Although this study suggests that there are some benefits of milk protein in fluid retention after exercise, it is not possible to determine the mechanism by which protein intake of milk increased fluid retention

In conclusion, the results of this study indicate that, when you match the energy density, fat content and electrolyte concentration, a solution of milk proteins is retained better than a carbohydrate solution. This suggests that gram per gram, milk protein is more effective in increasing the retention of liquid carbohydrates. Although not identified during the investigation, it is likely that the success of the solution of protein to carbohydrate , when fluid balance is due to a reduced rate of gastric emptying and therefore the absorption of fluids in general, although further research should be conducted to determine this relationship.

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