How to calculate the energy value?
Energy is the amount of energy produced in the body with the complete food digestion in the digestive process. Unit of measure is kJ or calories. The use of the word “calorie” usually implies a kilocalorie.
The figure shown on the packaging of the product, in fact, is not really that figure of the amount of energy that the body receives digest and assimilate this product. Moreover, this figure is obtained only by mathematically without chemical analysis.
Percentage of digestibility
One gram of protein as one gram carbohydrate contains 4 kcal, whereas one gram of fat – 9 kcal. Most often, the manufacturer takes a prescription product, mathematically calculates the amount of nutrients, and then also mathematically, the total caloric content.
In this case, animal protein and protein shakes are acquired by 95-97 %, vegetable protein – approximately 60%. It is also worth mentioning that the less you chew your food the less it is digested (corn cannot be digested at all).
The formula of daily calories
So, how do you calculate percentage of weight loss? First, the formula for determining the calories has been around for over a hundred years. Secondly, it defines the basic metabolic rate, after the calculation of which you need to use ratio from 1.3 to 1.75 depending on the activity level.
There are no clear guidelines on this factor, so the accuracy of the formula is destroyed by a coefficient selection procedure – overestimating or underestimating your level of activity, you can make a 20-30 % error in the calculation.
How many calories you need per day?
Studies show that daily caloric needs are different even among people of the same sex, age, weight, percentage of fat and muscle tissue – and, the difference can reach 20%. In this case, the reasons for this are not entirely known.
Previously it was thought that the more muscle, the more energy is needed to maintain them. But it turned out that 1 kilo of muscle requires about 15 calories a day, which is negligible. Yes, weight training can accelerate the metabolism but the mechanism for this is not clear.
Why the product is more important than calories?
All of the above should show you a simple truth: there is no point to consider calories themselves, as this figure is highly conditional. The actual composition of the product, namely – the amount of proteins, fats and carbohydrates – that’s what you need to pay attention.
If you gain the daily rate of calories but you do not have enough protein, the body does not start build-up muscle but begins to burn the existing ones. By reducing the fat to a minimum and increasing carbohydrates, you will start to put on weight even reducing the rate of calories by 20 %.
Katie
