Naver A recent study determines whether the use of whey protein in the management of malnutrition in the elderly has a suppressive effect on subsequent energy intake.
Whey protein is a natural protein supplement derived from milk and is frequently used for maintenance of lean muscle mass and management of malnutrition in the elderly. Malnutrition, both as undernutrition and obesity, is becoming more common in older men and women.
This can result in significant loss of mobility and a poor quality diabetic diet shakes life. Therefore, it is important for the elderly to restore skeletal muscle mass and function with the help of supplements.
Consuming whey protein is a convenient and effective way for them to meet their daily protein needs. However, the effect of whey protein on energy intake and gastrointestinal mechanisms is not well understood in older men and women.
A new study published in the American Journal of Clinical Nutrition investigated the effects of whey protein on diabetic diet shakes in the elderly. Each participant was given two oral whey-protein loads of 30 g kcal and 70g kcal and a flavored-water control drink. They were then studied on three occasions separated by three to 14 days.
The effects of whey-protein loads were determined on energy intake, gastric emptying, perceptions of appetite, and gastrointestinal hormones [e. Participants were given a standardized evening meal on the night before each study day.
Nehéz megemészteni a fehérjeport?
On the study day, the participants ingested the drink and their total gastric volume, perceptions of appetite and gastrointestinal symptoms were measured before ingesting the drink, immediately after and at minute intervals until minutes. At minutes, each participant was asked to consume a buffet-style meal until they were comfortably full.
The amount that was eaten at the buffet meal was calculated by weighing the food before and after consumption and energy intake kilocalories was calculated using a software program.
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Researchers withdrew blood to measure the plasma concentrations of gastrointestinal hormones. However, consumption of protein drink or control did not significantly suppress the energy intake at the buffet meal. There was found to be a dose-dependent effect of whey-protein load to slow gastric emptying, with no difference in the rate of gastric emptying between men and women.
In addition, the protein load caused an increase in the plasma concentrations of insulin, glucagon, ghrelin, cholecystokinin, GIP. However, the effects of protein load for hunger, desire to diabetic diet shakes, fullness, nausea, and bloating were not significant. Clearly, the protein drinks did not suppress subsequent food intake in older men and women.
As a result, there was a dose-dependent increase in total energy intake preload drink plus subsequent meal in diabetic diet shakes men and women compared with that of the control drink.
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These results indicate that protein doses sufficient to cause protein muscle deposition can be safely consumed by the elderly without a loss of appetite or a decrease in overall energy intake. This study has some limitations. The number of participants was very small which may have underpowered the study.
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The energy intake was assessed only at 3 hours after protein intake and not during the rest of the study day. Older women usually have lower energy requirements than older men but the study design allowed the drinks to be isocaloric for both men and women.
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In conclusion, the consumption of whey-protein drinks for the management of malnutrition in the elderly has no effect on the subsequent energy intake 3 hours after consumption. Therefore, an increase in total energy intake is achieved by consumption of whey-protein drinks.
This suggests whey-protein drinks are a good choice for elderly individuals who need to pay extra attention to their protein requirements. Effects of randomized whey-protein loads on energy intake, appetite, gastric emptying, and plasma gut-hormone concentrations in older men and women.
Am J ClinNutr, July