CALCULATION OF BMI AND WAIST-HIP RATIO Calculation of BMI Calculation of BMI The Body Mass Index or the BMI is a mathematical value that ex...
CALCULATION OF BMI AND WAIST-HIP RATIO
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| Calculation of BMI |
Calculation of BMI
The Body Mass Index or the BMI is a mathematical value that expresses the relationship between body weight and height. It was invented by the Belgian, mathematician, statistician and sociologist, Adolphe Quetelet. It is a very simple method of testing physical fitness. BMI has & direct relationship with body fat and is an effective instrument used to calculate the ideal body weight of an individual based on his/her height. It helps to know whether a person is underweight, overweight, obese or has normal weight. It is important to know the BMI accurately in order to take preventive measures against the various health risks associated with the different categories of weight. This test is applicable to beth men and women should be noted that the test results in case of children and the elderly may not be valid as the relationship between muscles and bone length or height keeps on changing.
In order to calculate BMI, All individual's sex, height and body weight are noted. BMI is then calculated with the help of the following formula:
BMI = Body weight (in kg) / Height x Height (in metres)
Since the body weight is calculated in kilograms and height is e in metres, BMI is expressed in the following unit:
BMI=kg/m²
Underweight- Less than 18.5
Healthy- Between 18.5 to 24.9
Overweight- Between 25 to 29.9
Obesity Grade I- Between 30 to 34.9
Obesity Grade II- Between 35 to 39.9
Obesity Grade III- Between than 40
For example: Body weight of an individual = 60 kg
His/her height = 1.50 metres
Therefore, BMI = 60/1.50 x 1.50= 60/2.25= 26.6kg/m²
Hence, by consulting the BMI and Health Status Chart, we can say that the individual in this case is overweight.
Calculation of Waist-Hip Ratio
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| Calculation of Waist-Hip Ratio |
Waist-hip Ratio or WHR is the ratio of the measurement of the ware hip. takes into account the differences in body structure. It is a useful measure of fat distribution and takes into account the fat stored in ty around waist and hips.
Waist-hip Ratio is calculated by measuring the circumference of the w above the upper hip Bone and the circumference of the hips at the wide This is done by using a measuring tape and the Measurements are takes either centimetres or inches The measurements are then applied to the following formula:
Waist-hip Ratio=Circumstance of waist/Circumstance of Hips
Waist-hip Ratio is considered as the measure of the health of a person and is also an indicator of the risks of developing some serious health problems. Research studies indicate that fat stored primarily in the belly (1. being py belled) instead of the hips, increases the chances of suffering from heart attack, hypertension and diabetes.
The norms of the waist-hip ratio for males and females are as follows:
Waist-hip Ratio
Males
- Excellent= <0.85,
- Good= 0.85 - 0.89
- Average= 0.90 - 0.95
- At least= More than or equal to 0.95
Females
- Excellent= <0.75,
- Good= 0.75 - 0.79
- Average= 0.80 - 0.86
- At least= More than or equal to 0.86
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