To calculate the index of Brock measure your height in centimeters and subtract 100. For example, with height 170 cm, your ideal weight should be 70 kg. Later the formula was improved. With the growth of 165 cm should be subtracted 100, with the height from 166 to 175 cm – 105, if you are higher then 110.
Paul Brock himself did not think their formula is accurate. Indeed, the method has a high accuracy. For example, a woman with a growth of 170 cm and weight 65 kg and with a proportional addition may look quite harmoniously. A man with the same figures hardly seem ideal, because the figure it will be frail.
Perhaps this is why now I prefer to use the so-called Quetelet index. To calculate it, divide your weight by height in meters squared. The resulting figure is the Quetelet index.
For example, your height is 1.70 m and a weight of 62 kg. Lift height in square 1,70х1,70=2,8900. Now count the index. 62: 2,8900=21,45.
Perfect scores from 18 to 25. For individuals slim build he is from 18 to 21, with an average addition of 21 – 23 and with tight addition of 23 – 25. But if the value is in the interval from 25 to 29, 9, start to clean myself up. Follow the figure and get on a diet. You have extra weight. When the index is greater than 30 beat anxiety. You have the first degree of obesity. If your index is below 18 try to eat more dense. You are underweight, that can threaten dystrophy.
Use the Lorentz formula. Weight (correct) = (your height - 100) - ((height - 150) / 2). It turns out that if your height is 160 cm, the weight should be 55 kg. However, this formula at 150 cm in height, the right weight is 50 kg, which is quite a lot.
There is an even easier way to know if everything is okay with your weight measure your waistline. If the waist circumference exceeds 80 cm you have a normal weight. If it exceeds, you have extra pounds, and more than 88 cm - it is worth considering that the problem of excess weight is likely to turn into obese.