The dietology, as well as any other science, does not stand still, and for calculation of ideal weight it is not enough to consider the individual structure of a body and human height. There are standards of the contents of fat in an organism for of both sexes, three types of the constitution of a constitution (weight of bones and the structure of a skeleton), growth and age.
It is required to you
- - centimetric tape;
- - calculator;
- - fat analyzer.
Instruction
1. Calculation on body volumes. There are two formulas, for men and for women. Men and women differently accumulate fat, men usually on a stomach, and women, as a rule, on a stomach and on hips. Men's formula: 495/(1.0324-0.19077 (log (Neck waist volume volume)) +0.15456 (log (Growth))) - 450 Female formula: 495/(1.29579-0.35004 (log (Waist measurement + Volume beder-Objem necks)) +0.22100 (log (Growth))) - 450dlya measurement of waist and hips measurements do not pull in a stomach and do not exhale all air from lungs, do not pull together a centimetric tape too hardly, but also it is not too free. Waist measurement is measured in the bottleneck, the volume of hips - in the most convex place, at the same time hold legs together. The volume of a neck is measured on the basis, ahead the tape passes through the throat hollow.
2. Assessment of a ratio of waist and hips measurements. It is the easy way which is not giving exact figures, but showing whether you have excess fat. Divide waist measurement into the volume of hips. If the received number more than 0.8, then you have excess fat if it is less - the percent of fat is normal.
3. It is better to entrust the following methods of measurement to professionals as assessment accuracy depends on it. The methods described below carry out in the improving centers and fitness clubs. A measurement method on thickness of a skin fold - the most popular. The special tool pinches a fold of skin which thickness is measured on the put scale. Thickness of a fold is measured in area of a stomach, hips, a breast and an upper back. Then data enter into the computer and the special program count fat percent.
4. Ultrasound. Ultrasonography scanning in several areas of a body as fatty tissues have different density is carried out, and then the total amount of fat in an organism is counted.
5. BES method (bioelectrical resistance): on a body the weak electric current through the electrodes fixed on hands and legs is passed. Fatty tissues do not carry current, thus it is considered that the quicker current passes on a body, the it is less in it than fat. This method is used in the portable devices reminding scales. This device is called the fat analyzer, and it can be got at the affordable price.
6. Weighing in water. Measurement is taken under water on a special chair within 10 seconds. Several approaches become, and on the basis of three maximum results it is removed a result. It is very labor-consuming and inconvenient way and it is applied only in the research purposes.