What is BMI MACHINE?
The body mass index is an estimation of a person's body fat, according to the National Institutes of Health. To calculate BMI, divide your weight (in pounds) by your height (in inches) squared, and then multiply that number by a conversion factor of 703. This same calculation can be used when measuring weight in kilograms and height in meters, but no conversion factor is needed.
For most individuals, a BMI between 18.5 and 24.9 means that their weight is normal, or "acceptable," according to the Centers for Disease Control and Prevention (CDC). A BMI between 25.0 and 29.9 means a person is overweight, and those with a BMI over 30.0 are considered obese.
Those whose BMI puts them in the "overweight" category should consider losing weight if they also have two or more health risk factors, such as smoking, inactivity or high blood pressure,
To ensure you take reliable measurements using body weight scales you must:
1. Zero the scales before the client steps onto them
2. Ask the client to remove any ‘heavy’ items from their pockets (key’s, wallets etc.) and remove any heavy items of clothing or apparel (big jackets, shoes, woollen jerseys etc.)
3. Ensure you note the client’s state and time of day for testing to ensure any subsequent tests can be taken under identical conditions (check the state of hydration, food consumed recently etc.)
4. When measuring weight – ask the client to look straight ahead and stay still on the scales. Wait for the needle/digital screen to settle before recording the measurement.
5. Calculating BMI (body mass index)
6. A very common method of measuring bodyweight as a risk factor (cardiovascular disease, diabetes etc.) is BMI (Body Mass Index). The calculation is based on comparing a person's weight against their height. It applies equally to men and women.
7. The equation for BMI is:
8. BMI = Weight (kg)
9. Height (m) 2
10.The following table categorises people according to their BMI results:
BMI Categories
Underweight = <18.5
Normal = 18.5-24.9
Overweight = 25.0-29.9
Obesity = 30.0->40
