IMC (body mass index) and MB (basal metabolism) what they are and how to calculate them
Being aware of the right parameter between weight and height is the first rule you need to implement whether you want to lose weight and do something for your health or whether you want to increase your muscle mass. Therefore, starting from your IMC it will be possible to create the tailor -made power supply and training program.
But what is the IMC?
The Body Massim Index It is a measured value that allows one evaluation of body weight and physical form.. The very simple formula to be applied is the division between body weight and the square of theheight. The result will be the indicative evaluation of one's current physical state that is disintegrated between the following categories:
Undersplash, normal, overweight and strongly overweight.
How is the IMC calculate?
Calculating your IMC is extremely simple by applying the following formula you will get the result:
IMC = body weight [kg] / (height [m]) ²
Example: a woman weighs 55 kg and is 1.62 m high.
Calculation: (55 kg)/(1.62 m) ² ² 21
The woman has an IMC equal to 21.
IMC table
Calcked your body mass index compare it with our IMC table to see where your weight is placed. According to the World Health Organization (WHO), all the values between 18.5 and 24.99 are placed in the normal range.
| Category | IMC (kg/m²) | Body weight | |
| Strongly underweight | < 16,0 | Underweight | |
| Moderately underweight | 16,0 – 17,0 | Underweight | |
| Slightly underweight | 17,0 – 18,5 | Underweight | |
| Normal weight | 18,5 – 24,9 | Normal weight | |
| Predipostness | 25,0 – 29,9 | Overweight | |
| Adiposity grade i | 30,0 – 34,9 | Adiposity | |
| ADPOSITY degree II | 35,0 – 39,9 | Adiposity | |
| ADPOSITY degree III | ≥ 40 | Adiposity |
Starting from your IMC value you can also calculate yours basal metabolism, the relationship that describes the energy consumed by your body in rest conditions, even when the whole day stretched out on the sofa. The additional energy you need for physical activities is called the level of physical activity.
The basal metabolism (MB), or BMR, from English Basal Metabolic Rate, is the energy expenditure of a resting organism, and includes the energy necessary for vital metabolic functions (breathing, blood circulation, digestion, nervous system activity, etc.). It represents about 45-75% of the total energy expenditure during the day. the Total metabolism It is the sum of basal metabolism and the surplus of calorie consumption linked to the activity during the day. It therefore represents the total energy use of an individual. The main factors that generally influence total metabolism are:
- Basal metabolism
- Daily activities
- Sports activities
- Thermogenesis we make an example: the ideal weight of a woman 165 cm can be calculated with an empirical but rather effective method, with a 10%tolerance: subtracting 110. In particular, 165-110 = 55. The ideal weight of this woman, therefore, is 55 kg, with a tolerance of 5.5 kg more or less: from 49.5 kg to 60.5 kg. At this point, all that remains is to complete the Calories Calorie Basal Metabolism: 55 kg for 24 = 1320 kcal. Every day, to survive and fulfill all its vital processes, a medium height woman needs at least 1320 calories.
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Medium IMC for women and men
Since there is significant differences in terms of weight between men and women, our table will help you identify the average values of IMC divided by gender. In addition to sex, age also naturally plays an important role.
The following table shows the correlation between IMC and age, for women.
| Age | Normal weight/IMC Ideal | |
| 16-17 | 19-24 | |
| 18 | 19-24 | |
| 19-24 | 19-24 | |
| 25-34 | 20-25 | |
| 35-44 | 21-26 | |
| 45-54 | 22-27 | |
| 55-64 | 23-28 | |
| 65-90 | 25-30 |
The following table shows the correlation between IMC and age, for men.
| Age | Normal weight/IMC Ideal | |
| 16 | 19-24 | |
| 17 | 20-25 | |
| 18 | 20-25 | |
| 19-24 | 21-26 | |
| 25-34 | 22-27 | |
| 35-54 | 23-38 | |
| 55-64 | 24-29 | |
| 65-90 | 25-30 |
Pros and cons of the Imc
The IMC continues to be a value used to provide an evaluation of body weight, as it is calculated with a fixed formula and allows a quick evaluation of the body weight itself. Over time, however, it has not been possible to do without detecting that some factors are not taken into consideration in the calculation. Corporate, sex and the relationship between muscle mass and fat massa do not play any role in the calculation of the IMC
It is important to keep in mind that in people who carry out a lot of physical activity, and who consequently developed the musculature, the result can be deaped. This is because muscle development causes weight to be gained, but not fat mass. In fact: the muscles are heavier than fat. In this case, the IMC is automatically higher, and this is why it is very important to take these factors into consideration when interpreting your own IMC.
To find out how to intervene to change your weight, the IMC can be a very practical indicative value. However, do not overwhelm the importance of this result and, in case of doubt, consult a trusted doctor. The main problem of the IMC is that it does not operate any differentiation between muscle mass and fat mass.