Research has found that consuming whey protein as part of resistance training is more helpful than soy protein in increasing lean body mass
Whey protein's important role in muscle synthesis and superior efficiency compared to soy protein have long been scientifically proven. However, a recent study conducted by researchers at the University of Connecticut and Boston Children's Hospital has added important information to this evidence. Insight 1. The study was carried out among ordinary adults (rather than elite athletes), which is undoubtedly a good news for consumers who are concerned about health and hope to improve their overall physical fitness through whey protein, a high-quality and perfect milk protein. Good news. In particular, the whey protein content levels involved in the research results can be easily implemented by food and beverage manufacturers in new products developed, thereby helping consumers easily realize their dream of "eating to use".
"Study published in 2011 showed that whey protein is more effective than carbohydrates in reducing weight, fat and waist circumference, while soy protein does not have the same effect as whey protein." Brian Helwig, director of nutritional research at the Dairy Research Institute (Bryan G. Helwig) Dr. said 2. "Now, the latest research results show that in addition to helping with weight control, whey protein as part of resistance training is more beneficial to the growth of lean muscle than soy protein."
Whey protein helps build lean body mass
The study was sponsored by the Dairy Research Institute and published online in the Journal of the American College of Nutrition on June 20, 2013. The study was carried out among 63 adult men and women (age 18-35 years old, weighing about 73 kilograms) and lasted for nine months. During this period, they were divided into three groups: 19 people in the whey protein group (13 men and 6 women), 22 people in the soy protein group (11 men and 11 women), and 22 people in the carbohydrate group (13 men and 9 women). Antibiotics were administered three times a week. Resistance training. The first two groups consumed 22 grams of whey protein or soy protein at breakfast on non-training days or immediately after each resistance training session. Three months, six months, and nine months after the start of the study were used as the measurement time base points.Don't record your weight and body composition.
"After completing resistance training, all three groups experienced gains in lean muscle mass," said lead researcher Dr. Jeff Volek, a professor at the University of Connecticut. "But the growth of the whey protein group was significantly higher than that of the soy protein group (muscle growth was 3.3 kg and 1.8 kg respectively). The reason may be that higher levels of plasma branched-chain amino acids were measured in the whey protein group. , especially related to leucine content.”
The key factor is leucine
Combining resistance training with timely supplementation of whey protein has been confirmed by a series of studies to be extremely valuable for muscle synthesis, and this new study is based on many previous studies. Whey protein can be quickly absorbed by the body, and its branched-chain amino acid content is 50% higher than that of soy protein. Branched-chain amino acids can effectively promote muscle synthesis and avoid muscle breakdown. Whey protein contains natural leucine, which plays an important role in maintaining and repairing muscles. Leucine cannot be synthesized in the human body and must be obtained from food.
Unlike previous studies, this study looked closely at the levels of leucine in the blood of subjects after consuming whey protein. Leucine is a branched-chain amino acid and an important "switch" for muscle growth. Whey protein has more leucine than soy protein or proteins from other sources. During the study, people who consumed whey protein had higher levels of leucine in their blood than those who consumed other protein sources, conclusively proving that whey protein’s high leucine content is beneficial for muscle building.
“Protein is not only a key nutrient for building and repairing muscles, but also enhances satiety. With age, muscle loss increases. Increase appropriately. The intake of high-quality protein can help reduce muscle loss," said Dr. Chang Cuiqing, a domestic expert in the field of sports nutrition research, executive director of the Chinese Nutrition Society, and director of the Nutritional Biochemistry Research Office of the Institute of Sports Medicine, Peking University Third Hospital. "The latest research results now show that in addition to its important role in muscle synthesis in special groups such as fitness groups, athletes and the elderly, whey protein is also beneficial to muscle synthesis in ordinary adults."
"Consumers want their food and beverages to not only taste good, but also promote a healthy lifestyle," said Ms. Jiang Yan, consultant to the U.S. Dairy Export Association. “U.S. whey protein is an ideal dairy raw material that combines nutrition and function. It can not only meet the health needs of consumers, but alsoThe taste is light and moderate, and can be blended with the desired flavors of various foods. As the world's leading producer and exporter of whey protein, the United States can provide a variety of whey protein concentrate and whey protein isolate products to meet the diverse application needs of Chinese manufacturers. ”
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