The index of weight – the concept entered in 1869 by the Belgian erudite A. Ketele. The index of weight defines compliance between human height and its weight. It is necessary to understand that the index of mass of a human body is only approximate assessment of a constitution by which it is impossible to draw conclusions about dystrophy or obesity at all.
It is required to you
- - height meter,
- - scales,
- - calculator.
Instruction
1. According to the researches conducted by physicians from WHO (World Health Organization) among population planets, body mass index equal and less than 16 kg/sq.m demonstrate pronounced deficiency of weight. And the value of the index of the weight 30 and more, usual for adults, speaks about various degrees of obesity. Norm according to WHO it is considered to be the body mass index of the person within 18-25, that is the index of weight 25-30 according to the conclusion of specialists of this authoritative organization confirms excess weight.
2. According to the Israeli scientists, the normal index of weight for men is the value from 25 to 27 – at such compliance of growth and weight the average life expectancy of male half of humanity is maximum.
3. As assessment of a constitution and risks of obesity on body mass index is very approximate (at identical indexes of weight there can be various distribution of weight on a body), in the USA the method for determining these factors by means of the index of volume of a body with use of the three-dimensional scanner is developed.
4. Measure human height - use for this purpose the height meter. The person has to be without footwear and touch a floor by both heels – otherwise the patient can be extended on several centimeters.
5. Weigh the examinee. For purity of an experiment, an object has to be naked.
6. Divide by means of the calculator research object body weight into a square of size of its growth in meters. The received value will also be required BMI - the index of mass of a human body.
7. During the day growth of people changes on several centimeters. It is considered that the person is the highest right after a dream in normal situation, that is lying – it occurs due to restoration during sleep of a condition of intervertebral disks. By the evening its growth can decrease. In zero gravity the human height increases even more – to 8 cm.