Anyone who strives for an ideal figure, tries to follow the fluctuations in their weight. This is much easier to do if you know the scope of normal body weight with a certain height. When you know what normal weight with height of 165 cm (170, etc.) should be, it is much easier to control yourself and not go too far with losing weight. Indeed, excessively low or high body weight can cause irreparable damage to health.
How are the frameworks defined?
It is immediately worth noting that indicators of normal weight for one person can
differ from those for another, even if their growth is exactly the same. An important role in determining the weighting framework is played by gender. For men, weight indicators are an order of magnitude higher than for women. This is due to the structural features of the male body, namely, the severity of the bones. For example, a normal weight with a height of 170 cm for a woman is about 55–60 kg, and for a man, weight indicators with the same height range from 63–67 kg. Which bar to adhere to, minimum or maximum, the choice of each person individually. These limits are set by doctors and determine those indicators at which the body will feel good.
A simple way to calculate normal weight
The easiest way to determine the normal weight for the growth of a particular person is by the following formula: subtract one hundred from the growth rate and subtract another 10% for men and 15% for women from the resulting difference. This formula was deduced by the French anthropologist Paul Brock. The data obtained are very approximate, but you can estimate the boundaries in this way.
Basically, the formula is suitable for people with average growth rates. In addition, this method does not show the distribution of weight in the figure. Even at normal rates, a person may have full legs or other parts of the body. When calculating the ideal weight, you need to consider many factors that can affect the final result. Therefore, several other methods were devised for determining normal body mass indices, which are more accurate.
Body Mass Index (BMI)
This indicator was derived by the Belgian sociologist Adolf Kuttle. It is still used in medicine and sports, although it has long been proven that the method is not absolutely accurate. The formula for calculating body mass index looks like this.
BMI = Weight (kg) / Height 2 (m)
The result is a two-digit number, which has its own decoding from the World Health Organization. If the index ranges from 18.5–25, then the weight is considered normal and does not pose a health risk. BMI in the range of 25-30 speak of overweight. If the resulting figure exceeds the mark of 30, this indicates a certain degree of obesity. It is worth noting that indicators below 18.5 may indicate a
lack of body weight, which for a woman is fraught with unpleasant consequences up to infertility. Underweight men can also negatively affect men.
BMI formula adjustments
Body mass index reflects reality only in the case of average growth and normal physique. That is, the normal weight with a height of 168 cm for a man can still be calculated using this formula, but if it is lower, then another 10% should be subtracted from the figure obtained. The same applies to women taller than 154 cm.
For women above 174 cm and men whose height is more than 188 cm, the result of calculating the normal weight according to the above formula will need to be adjusted. For this, 10% is added to the obtained indicator. Corrections to the formula were added already in the process of its use, when it became clear that for people taller or lower than average, the results are unreliable.
Example of calculating normal weight using the BMI formula
Consider how to calculate normal weight with a height of 180 cm. For this, we substitute the growth index and the limits of the body mass index in the BMI formula. The result is:
18.5 (25) = X / 3.24, where X is the normal weight with an increase of 1.80 m.
Through simple calculations, we find that the normal mass limits for a given growth are 60–81 kg. For women, you need to add 10% to this figure and get a range of 66–89 kg. It is worth noting that these are medical indicators of normal weight, which does not pose a threat to human health. For a comfortable stay and beautiful reflection in the mirror, some people need to strive for the lower or upper mark. For example, for a healthy young man with a height of 180 cm, a weight of 60 kg is considered low, but not fatal.
Factors Affecting BMI
Many factors affect normal weight with a height of 1.60 m (and any other). For example, it is taken into account that with age, BMI can increase, and the figure can remain within the normal range.
Also takes into account the lifestyle of a person. For athletes, this index does not reflect the real picture, since the muscles are much heavier than body fat. And it turns out that a person who has been actively involved in sports all his life has a BMI of over 30. Although in reality he may not have extra pounds, and a BMI does not show the degree of obesity, but the weight of muscle mass.
Build also plays an important role in determining normal weight. For example, a woman’s normal weight with a height of 175 cm is approximately 60 kg. This figure can safely be increased by five kilograms for women with a wide bone. The profession of the model involves a physique with a narrow bone. The weight of the models rarely exceeds 50 kg, while their height should not be lower than 175 cm. Often, the desire to approach such forms leads to depletion of the body.
Disadvantages of BMI
The main disadvantage of this technique is too rough data on the norm of body weight. Also, with the help of BMI it is impossible to determine the weight rate for pregnant women and children. The ratio of growth and body weight in a child is not the same as in an adult, therefore, even with all the adjustments for growth below 164 cm, the formula cannot be applied.
Normal weight with a height of 160 cm according to the BMI formula can reach 64 kg, but what is medically acceptable for an adult can be dangerous for a child. In addition to growth in the indicator of normal weight of the child, his age must be taken into account.
Other methods for determining weight
In the process of using the body mass index, it became clear that this indicator does not speak of an ideal figure. The data obtained reflect only normal weight from a medical point of view, but with the same height and weight, one person may look fit and slender, and the other - full and loose. It depends on the percentage of fat in the body on the total mass and its distribution throughout the body. For example, a normal weight with a height of 170 cm for a sports person may be ten kilograms more than for a person who leads a sedentary lifestyle.
To determine the percentage of fat in the body , several modern methods are used, but only two are widely used. The first method is that a low-power current pulse is passed through the body. The speed of passage of the current pulse through the fatty layers is much lower than through the muscles and bones. And the more fat, the slower the signal. This method is widespread due to its accuracy, but until recently it was only available in medical centers, as sophisticated professional equipment was used. Now it is possible to carry out this measurement even at home with the help of scales, which include such a function.
The second method consists in measuring with a special device resembling a vernier caliper, fat folds in different places of the body. The data obtained experimentally are compared with the developed tables and the degree of obesity is calculated. An electronic device for such measurements is called a caliper. It automatically analyzes the data received and immediately displays the result. The advantage of this method is the portability of the caliper, which takes up very little space. As in the first case, with it you can make measurements and calculate the normal weight with a height of 165 cm or any other.