It knows protein whey or whey since long for its speed of assimilation and its biological value, but that is perhaps less known is that whey can prove particularly useful for the maintenance of muscle during weight loss.
Dry dieting or weight loss, we often recommend casein, the protein long-acting period that spreads slowly, but might be that the protein source selected influences the retention of these proteins during calorie restriction.
Researchers at McMaster University in the Canada and the University of Birmingham in the United Kingdom have compared the effect of different protein sources in a study published in the Journal of Nutrition. The latter highlights the superiority of whey. It induces not only a higher fat loss but a more pronounced muscle maintenance.
Doses of proteins were administered twice per day, 40 obese volunteers or overweight, aged 35 to 65 during a diet low in energy of 14 days. During this period, the plug 27 g of whey, 26 g of soy or 25 g of maltodextrins.
Consumption of whey has not only prevented the decline in the protein synthesis following the meal, unlike taking soy or carbohydrate.
Lipolysis (FAT breakdown) has been removed in each group, but the effect was much greater in the Group of carbohydrates.
What is interesting is that whey protein reduced the decline in synthesis of proteins usually found in the case of caloric deficit, which means in other words that it preserves muscle mass.
Other previous analyses had shown that whey protein, in combination with resistance exercises can improve body composition during dieting, weight loss being concentrated on the loss of body fat.
Gold is what happens when dieting? Weight loss is interchangeably in lean body mass (muscle loss) and fat mass, which is not the desired effect, because we should be able to maintain lean body mass and reduce fat mass priority to keep a high metabolism.
The solution is to increase the proportion of proteins as a source of energy in periods of regime, to influence body composition and focus on muscle mass, during this weight loss, to be guaranteed to lose fat not muscle. The protein source chosen is important at this level here since the day whey this 'protector' role of the muscles.
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