To determine the normal body weight, depending on its growth, there are a number of ways, but it is necessary to take into account that calculated by the method of any ideal weight is only approximate. The formulas for calculating the weight depending on the growth can not be taken into account all the features of the constitution of the individual. It should also be borne in mind that muscle mass is much larger - about three times the proportion of than fat tissue. Accordingly, people involved in sports, will be harder for the same amount of body. Therefore, the calculated growth-weight formulas figures should be regarded as no more than indicative.

One of the methods used is to calculate the ideal weight according to the formula Brock .  The method proposed by the French explorer Paul Brock, except for Human Growth and takes into account his age .  The fact that the rate of at least "growing" body weight increases .  According to the formula Brock ratio between height and weight for people under the age of forty years, is: weight (in kilograms) = height (in centimeters) - 110 .  After the onset of the fortieth anniversary of the ideal ratio of height and weight varies slightly .  For that category of people that crossed the age limit, Broca formula is: weight (in kilograms) = height (in centimeters) - 100 .  At the same time, depending on the body in the calculation of normal weight should be corrected .  Persons lean constitution (astenikov), multiply the result by 0, 9, and for people with "big bones" (hypersthenics) this ratio is 1, 1 .  If the age of the person more than fifty years, the ideal weight calculated by the method of Brock, should increase by about five percent .

Currently, one of the most popular for weight calculation is the formula Quetelet. According to the proposed methodology, calculated the body mass index Body mass index   (BMI). This figure is dividing the weight (in kilograms) to the square erected height (in meters). The body mass index for women of normal body shall not exceed twenty-five. If a BMI above this value, the weight is considered to be excessive. On the other hand, body mass index should not be less than eighteen. BMI values ​​below this limit on the recommendation of the World Health Organization is a sign of insufficient weight. Like most of the other methods for determining the ideal body weight, Quetelet method may not be suitable for estimating the weight of the people who actively participate in sports. Limits normal BMI should be adjusted for individual slim build, and for the categories of the population with a "tight shot down" the body.

A simple method of calculating the optimal weight can serve as a Lorentz formula. To determine the mass of a body by this formula using the following relationship: normal weight = (height in cm - 100) - (height in centimeters - 150) / 2. Methods of calculating the ideal weight Ideal weight: the truth - in the calculations   Lorenz formula, being very simple, does not take into account a person's age and the structural features of the body. Therefore, the result obtained in this way can be regarded as very approximate.

Also, to assess what should be the ideal weight, you can use the formula Brunharda, according to which a person's weight is equal to its height in centimeters times the circumference of the chest and divided by 240. The formula, as methods of determining the weight of the Lorentz formula does not take into account age of the person. But, unlike the Lorentz formula, in Brunharda calculations take into account the constitution of the body.

A less common method of evaluation is the calculation of the optimal weight by the formula Nagler. In compiling this formula it was assumed that the growth of human 152 4 centimeters corresponds to an ideal weight 49, 5 kg. Increase in growth rate by one inch (2, 54 cm) corresponds to the increase in the value of the ideal weight to 990 grams. The resulting formula looks like this: the ideal weight is 49, the 5 + (height - 152, 4) * 0 99/2 54. The calculations need to take growth in centimeters and calculate the optimum weight in kilograms is obtained. This method, proposed by the American nutritionist Bill Nagler is very popular in the United States.

Whatever the method of determining the mass of the body you did not use, do not need to take the result too literally and strive to bring their weight to the calculated values. However, if these values ​​and your actual weight diverge significantly, it is necessary to take measures to bring the body weight to normal.

Zhiguli Andrew

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