SOY PROTEIN (SOY PROTEIN ISOLATE) Pureprotein. Soy protein isolate

Soy protein in bodybuilding

To gain the required muscle mass, an athlete needs to constantly consume a certain amount of protein.
The protein contained in food does not always meet the stated needs. Therefore, people involved in bodybuilding begin to consume sports supplements, one of which is soy protein. The main determination of the required quality of protein consumed is the indicator of its effectiveness. According to experiments, soy protein is the worst type of protein used in bodybuilding, both for the purpose of gaining and maintaining the desired muscle mass, and, if necessary, burning excess fat deposits.

The cost of the product is extremely low. Soy protein is often used in feeding pets. Due to its low cost, soy protein is quite well advertised, but its harm to the athlete’s body is often hidden.

Soy isolate

What is soy protein in its ideal form? This is soy isolate. Unlike feed soybean, it is almost completely devoid of such unpleasant components as fiber and phytoestrogens. All this makes it a disproportionately more profitable investment in sports nutrition than purchasing any other type of protein.

Due to complete hydration and partial fermentation, complete denaturation of the protein occurs to the simplest amino acids. The overall profile coupled with bioavailability is improved. Of course, it still lacks the balance of essential amino acids (especially isoleucine, which is involved in the formation of glycogen storage), but consuming such a protein is much safer than risking gynecomastia in pursuit of the next pancake behind the barbell.

Biological value

The biological value of this product is very low. Soy protein is not able to maintain the level of nitrogen necessary to maintain immune protection. It is not an active protein stimulant and does not help reduce muscle loss.

Soy protein contains lecithin, which is responsible for limiting fat content in the liver and also promoting the removal of bile. This substance is involved in the formation of cells of the central nervous system and brain.

Research conducted in Japan has proven that the substances included in soy protein have a direct effect on the removal of radionuclides from the body, due to which, when taking soy protein, the body is protected from the effects of destructive radiation.

It is not soy protein itself that has a beneficial effect on muscle growth, but soy protein isolate. It also actively fights unnecessary fat deposits. Athletes often use isolate in the pre-competition period, when it is very important to get the body in order in a short period of time. Unnecessary fats are removed, and the athlete’s body is given the desired definition.

The isolate contains protein (more than 95%). It provides an effective foundation for muscle fibers without containing unnecessary fat. Therefore, soy protein isolate will be useful both for gaining muscle mass and for increasing the athlete’s athletic achievements.

Composition and calorie content

There are 90 g of protein per 100 grams of sports supplement. The nutritional value of the product is 375 kcal (1590 kJ). That is, one serving of the product accounts for approximately 100 kcal. The percentage of amino acids in the isolate is significantly higher than in animal proteins. But there is almost no methionine in the composition, so you will have to take it additionally.

The isolate is also rich in:

Lecithin. It protects the liver, improves brain function and normalizes metabolism.
Isoflavones. They protect the body from cancer and normalize hormonal levels.
Plant fibers that improve metabolism.
Macroelements (sodium, potassium, calcium, magnesium, phosphorus).
Zinc, which maintains healthy skin and hair.
Iron, which increases the level of hemoglobin in the blood.
Arginine, which improves the functioning of the circulatory system.
Glutamine, which suppresses metabolic stress.

Due to the almost complete absence of fat in the supplement (0.5%) and low calorie content, it can be easily taken while cutting or on a protein diet.

Benefits of Soy Protein

Despite the anti-advertising of soy protein, this supplement has its significant advantages.

The benefits of soy protein are:

lowering cholesterol in the blood (the isolate affects cholesterol levels to a lesser extent due to certain purification features);
content of amino acids, which are important building materials for muscle tissue;
causes the production of tyrosine derivatives, which affects the effective drying of muscle mass;
has antioxidant properties necessary for the body;
reasonable price.

One of the main advantages of soy protein is its fairly low price, but when deciding to start taking this supplement, you must be aware of its possible adverse effects on the human body.

Classification of protein by type of raw material

Guys, protein is a nutritional supplement that is in demand by both men and women, regardless of age and training experience. This nutrition was created by dividing milk protein into casein and whey mixture.

However, if the first version of the sports nutrition is absorbed for a long time and not completely, then the gastrointestinal tract does not have problems with the second complex of polypeptides.

Modern powders are used mainly for making cocktails, adding yogurt or milk to the consistency. Convenience and simplicity are two main reasons for the popularity of protein in the international arena.

You can take this high-protein drink with you on a trip and drink it throughout the day while following a proper diet. Based on the raw materials used to make such sports nutrition, supplements are traditionally classified into 2 groups:

Soy protein is a complex of plant polypeptides.

Harm: The food supplement is made from genetically modified raw materials, so such a mixture has not earned trust in the international market. The presence of inhibitors in soybeans - substances that slow down the functioning of internal enzymes that process proteins.

The presence of plant elements in protein - phytoestrogens, structurally similar to female hormones, causes a decrease in testosterone in the male body. This effect is fraught with a lack of potency and sexual dysfunction in a representative of the stronger half of humanity.

Benefit: The affordable cost of sports nutrition determines the high demand for the product among novice athletes. Lecithin contained in soy supplements slows down the aging process of cells and muscle tissue.

The structure of the substance allows people with pathologies of the urinary system to take such a mixture, because the powder has less effect on the functioning of the kidneys. The level of thyroid hormones increases in the body, promoting excess weight loss.

Whey protein is a natural food supplement.

Harm: With excessive intake of a high-protein mixture, an athlete may experience dizziness and migraines, vomiting and nausea. Some athletes are individually intolerant to whey polypeptides, so taking this consistency is invariably accompanied by stomach pain, diarrhea and bloating.

Benefits: The powder contains a high content of BCAA amino acids, which promote muscle gain and fat loss. An increase in glutathione (a powerful antioxidant) in the body is the reason for accelerating the recovery process after exercise due to the rapid regeneration of cells and tissue fibers. Blood cholesterol levels are significantly reduced, and the immune system is strengthened.

Friends, the properties of protein directly depend on the components present in the structural composition of the substance. A nutritional supplement can be indispensable on the way to a desired goal (for example, a sculpted body) or become a prerequisite for the occurrence of chronic diseases. Which powder base is preferable to choose in accordance with the above characteristics?

Personally, I decided to try whey protein. Of course, for now I’m just training at home, but I still wanted to try it for myself. Moreover, I use it quite a bit. Only after training. ? We'll see the result later. ?

There are also other types of protein that are less in demand among professional athletes and are suitable for solving certain anatomical problems:

Casein - made by curdling milk; it contains a large amount of animal protein; is slowly absorbed by the body (3–5 hours).
Milk is a complex nutritional supplement that combines whey with casein; part of the mass is absorbed quickly, and the other half slowly.
Meat - made on the basis of animal protein and has a distinct taste of meat, so cocktails made from such protein are not in great demand.
Egg – isolated and dried egg white; It has a specific taste (not everyone likes it) and is quite expensive.
Wheat - made from the germ of a grain crop; Its composition is similar to that of a soybean food additive, so it is not widely used.

Which powder base is preferable to choose in accordance with the above characteristics?

Description of the disadvantages

The following are the disadvantages of soy protein:

very low biological value of the product;
influence on reducing the level of the male hormone testosterone;
influence on the deterioration of the level of methionine, which is responsible for protein synthesis;
low digestibility of soy protein by the body.
soy protein simplifies the oxidation mechanism in the body, which leads to diseases such as atherosclerosis;
According to some studies, soy protein contributes to growth retardation;
soy protein is not digestible, it contains substances that destroy connective tissue and damage the gastrointestinal tract;
Some substances contained in soy contribute to obesity.

Before using soy protein, you need to weigh the pros and cons, referring to studies that have been conducted recently, you should stop taking soy protein isolate.

Myths about the dangers of supplements

I would like to immediately reassure those who have heard various myths about this supplement. Most of them have no scientific basis. These are either just rumors, or someone’s assumptions and hypotheses. In many sources you can read that soy reduces testosterone levels. Studies conducted in recent years refute this.

The isoflavones (phytoestrogens) that soy contains actually stimulate estrogen receptors. But all this happens at a minimal level. In this case, no global changes occur in the body. There is no clinically proven evidence. Hypothetically, a decrease in testosterone is possible, but only if the isolate is consumed in horse doses.

There is another myth that this supplement is not completely absorbed. This is only true for cheap soy proteins. Such a product is actually absorbed only by 40-60%. But high-quality isolate is absorbed almost completely

When purchasing, pay attention to the composition of the isolate and the price. The very cheap cost of the supplement should alert you

Another rumor is that plant proteins have an unbalanced amino acid composition. It is based on the fact that proteins from plant foods are incomplete. This is true for other plant polypeptides. Also, cheap soybean concentrates have an inferior amino acid composition. But when it comes to quality soy isolate, this is not true. This supplement contains most of the amino acids necessary for humans.

Soy Protein Isolate Pros

Isolate is a dietary protein supplement of plant origin, which is obtained from soybeans. Isolate contains a large amount of protein, as well as some fat and carbohydrates.

The active substances of the isolate contribute to:

liver protection;
improving the functioning of brain cells;
normalization of fat balance;
prevention of cancer;
maintaining the hormonal balance of the body.
suppression of metabolic stress.

Soy protein isolate is indispensable if an athlete wants to build muscle mass, and it also promotes weight loss.

Soy in bodybuilding: harm or benefit for a bodybuilder

Nutrition

Salute to all fans of healthy food and an ideal physique! Have you heard that soy in bodybuilding is the best constructor product for building an athletic figure!

About the richest product in nature

Soy protein is the only plant protein that has high biological value and essential amino acids for human growth, development and sports. Therefore, soy products are not only the main component of the diet of vegetarians, but also easily replace red meat in the diet.

It turns out that the cultivation of soybeans began in the 11th century BC in East Asia, where its unique beneficial and nutritional properties have long been known.

But in Europe and America they appeared only in the middle of the 18th century, and then only as animal feed. It was only in the 20th century that soy began to be used in our food culture as a product for human consumption.

5 reasons on a bodybuilder's plate

Let's find out in detail why the notorious soybean is so useful.

Its protein contains glutamine, which is responsible for the structure of immune cells. Glutamine is significantly reduced as a result of intense strength training, so it is usually supplemented with a separate sports nutrition supplement. It can easily be replaced by a dish made from soy products.
It contains lecithin - an indispensable protector of nervous system cells, as well as an improver for the liver in processing fats. It also helps lower cholesterol and reduce the risk of developing cardiovascular diseases.
Thanks to soy protein, the athlete's endurance increases, recovery processes improve, pain syndrome decreases and inflammation decreases. Thanks to the antioxidant properties of isoflavonoids and essential amino acids, the bodybuilder's muscle mass increases at a rapid pace.
Surely you will be reminded that due to the high content of phytates, soy interferes with the absorption of iodine, zinc, iron and calcium. But if the diet is balanced and rich in the consumption of various foods with a good content of macro- and microelements, then giving up soy is absolutely not worth it.
Soy is especially beneficial for women because it contains isonoflavones. They change the metabolism of estrogen in such a way as to protect the body from possible breast cancer. It is also indispensable during menopause, improving the general condition of a woman.

Debunking anti-soy myths...

Many bodybuilders may now say: “What about testosterone, which is reduced as a result of eating soy?” Our dear athletes, modern scientific research has proven that phytoestrogens in soy are contained in such small quantities that they are not able to in any way influence the decrease in male sex hormone in the body.

There is an opinion that pregnant women, children and members of the older generation should not eat soy. Allegedly, it ages the body, reduces brain volume, and contains hormone-like compounds that are dangerous for pregnancy. But what backs up such rumors is unclear.

There are also conclusions that soybeans can prolong the life of people, so they are useful for all people to consume without exception. In any case, if not abused, it is quite acceptable. In addition, natural soy milk products do not cause allergic reactions in children. This has already been definitely proven.

Honey, what did you cook for dinner today?.. What??? Soy again?!

Soy products are available in a wide range of products in Asian countries. Here are a few that are considered the most popular:

Soy meat;
milk;
tofu cheese.

They can be found in any supermarket. You can cook anything from soy meat: delicious cutlets, meatballs, cabbage rolls, etc. Soy sausages and burgers are also available in stores. And cheese, in turn, will be an excellent ingredient for preparing a morning omelet and other goodies for a bodybuilder.

Therefore, for a balanced sports nutrition, a bodybuilder should still try unique soy with its unique, but piquant taste.

Soy protein isolate cons

When taking soy protein isolate, you need to be aware of the possible negative consequences:

soy protein, on the basis of which the isolate is produced, does not have high biological value;
the isolate does not have good digestibility;
among the components there are phytoestrogens, similar to female sex hormones that block testosterone levels in men;
Sometimes, when taking it, it is possible to observe disruption of the gastrointestinal tract.

In order to avoid these problems when taking isolate, you need to start taking the sports supplement with a small dose.

Nutritional supplements for athletes

In the world of sports, new supplements are constantly appearing that help athletes improve their health and form a beautiful body.

They are almost no different from regular food. Their main feature is that they are more concentrated and purified from harmful impurities, and have a balanced composition of necessary substances.

For example, from protein shakes, athletes receive high-quality protein isolated from dairy, meat and plant products simultaneously. In addition, a vitamin and mineral complex has been added here. Overall, it turns out to be a very useful supplement, which at the same time does not overload the digestive system.

Some of these supplements include soy protein isolates.

How to take soy protein

If an athlete decides to stop taking soy protein, taking into account the possible negative consequences, then he should know how to properly take this sports supplement.

Soy protein is consumed taking into account the limitation of the maximum volume of food entering the stomach: up to 30% of the stomach should be empty. When getting up from the table after eating, the athlete should feel a feeling of malnutrition. Soy protein is a product that can become a substitute for some food products.
People who limit themselves from active movement should take no more than 1 g of soy protein supplement per 1 kg of their weight per day.
If the athlete’s load level can be considered average, then the daily volume of protein is no more than 1.7 g per 1 kg of the athlete’s weight.
For strength athletes who require special energy consumption, the daily amount of protein is at least 2 g per 1 kg of weight.
When calculating the serving of soy protein taken, it is important to take into account the presence of essential amino acids in food products consumed, such as meat, eggs, dairy products.
If the growth of the required muscle mass decreases, complex carbohydrates should be added to the athlete’s diet: peas, lentils, potatoes, pasta, cereals.
When lean muscle gain is needed, for example, in the pre-competition period, soy protein should be replaced with isolate, which will be more effective.
The taste of soy protein can be improved by adding fruit smoothies and fruit juices, as well as honey and sweet syrups. The required temperature of the drink is a maximum of 35º C. This drink is drunk in the mornings and evenings in small sips.

Price

To achieve good athletic results, it is recommended to purchase isolate, the price of which is almost half that of whey protein. One kilogram of soy protein costs from 215 to 300 rubles. Many athletes note this as a positive side of soy protein.

In addition, you need to know that the price of a product depends on the percentage of protein in a serving: the higher the percentage of protein, the more expensive the product. There are soy protein isolates on the market ranging from 78 to 100% protein per 100 grams.

This percentage composition is important when a specific goal is being pursued. When drying, for example, it is better to use a 100 percent product.

In conclusion, it should be noted that at a low cost, the product is available in the market.

Protein Disadvantages

The mixture based on soy protein isolate is not without its disadvantages, which is why many people refuse this type of sports nutrition:

Side effects in the form of a slowdown in digestive processes cannot be ruled out.
Protein digests slowly, so it is not suitable after training or in the morning on an empty stomach.
Not the highest quality of raw materials.
Poor amino acid composition.
If the production technology is not followed, the final product may contain phytoestrogens that affect the hormonal levels and strength indicators of men.

Myths about harmfulness

There are many myths about the benefits and harms of soy protein isolate. They have no scientific basis, so athletes’ opinions about the product differ. There is a version that a cocktail of such protein reduces testosterone in the male body. A very controversial version with no real evidence.

As for the poor absorption of soy protein from isolate, this only applies to cheap products from unscrupulous manufacturers. High-quality protein is absorbed entirely, completely dissolving in the intestines.

Talk of imbalanced amino acid composition is also a myth. In reality, it is simply inferior, that is, it is inferior to the composition of amino acids in a whey protein shake, but only slightly.