Body Mass Index (BMI) is a health scale popular among medical professionals & others who are conscious about health. It is a ratio of the height and weight of a human body.
BMI is calculated as "weight in kilograms divided by square of height in meters".
Its normal range is 20 to 25. It is considered that less than 20 is underweight and greater than 25 is overweight; >30 is obese.
A person with 72 kg weight & 1.72 m height has BMI 24.33.
What caught my attention is that IRRESPECTIVE OF WHETHER THE PERSON IS A CURRENT BOXING CHAMPION, 100 M OLYMPIC GOLDMEDALIST, BEDRIDDEN PATIENT OR A DEADBODY, BMI WILL BE 24.33.
To me this does not make any sense.
A few days of thinking gave rise to the concept of BMPI. This also is a health scale as well as a ratio of body parameters. First two are as in the case of BMI height and weight. Third one is power, an approximate representation of PHYSICAL STRENGTH oh the person.
Strength is masured using a conventional mechanical doctor's weight scale. It is the reading shown by the dial by holding the machine by both the hands and squeezing/pressing the platform using all the fingers. Obviously the value will be in kilograms.
BMPI is defined as the result of STRENGTH or POWER MULTIPLIED BY SQUARE OF HEIGHT IN METERS & DIVIDED BY WEIGHT IN KILOGRAMS.
A person with 1.72 m height, 72 kg weight & 30 kg strength or power has BMPI = 1.23.
If the person is sick, ability to press the machine comes down there by the dial showing smaller number.
Strength factor being on the numerator of the formula, the result is DIRECTLY PROPORTIONAL TO ITS VALUE. Hence it is felt that BMPI gives a better picture about the physical health of a person in comparison with BMI.