What Is Thermogenesis?

The heat generation coefficient refers to the amount of calories per unit weight of nutrients brought to the human body. The heating coefficients of the three nutrients are as follows: 9 kcal of heat per gram of fat; both protein and carbohydrates are 4 kcal / g.

The energy unit of nutrition is calories, which refers to the amount of heat required to increase the temperature of 1 gram of water by 1 degree. The international unit is Joule, which refers to the energy required to move a kilogram of object by 1 meter with a force of 1 Newton. The individual's energy requirements include the sum of all the public and heat such as maintaining the body's temperature, performing external work, and body metabolism. The equivalence of thermal work makes it possible to determine the basic value of human energy intake. At the same time, the in vitro burning value of the nutrients is measured and compared with the energy value required by the human body for diet design.

The value measured when food is completely burned is also called physical burn value, or total energy value. Production of nutrients including fats, carbohydrates and proteins ^[1]

Nutrient heat generation coefficient (energy coefficient): In nutrition, there is a certain correspondence between the heat generating nutrients and the energy produced, which indicates how much heat the nutrients produce in the body. 1g carbohydrate corresponds to 16.7kJ (4.0kcal). 1g fat corresponds to 37.6kJ (9.0kcal). 1g of protein corresponds to 16.7kJ (4.0kcal) ^[2] .