Calculating Body Mass Index Senior Health- Bauberger.

Calculating Body Mass Calculating Body Mass IndexIndex

Senior Health- Bauberger

Body Mass IndexBody Mass Index

• Body Mass Index (BMI): – A ratio of weight to height

– Can be used to assess whether your weight calls within its healthy range

– BMI charts take into account age and gender, since males and females grow at different rates


• BMI= [weight in lbs / (height in inches)2] x 703

• Steps to calculate BMI:– Multiply your height (in inches) by your height

(square it)– Divide your weight (in pounds) by your height

squared– Multiply the result by 703.


• Direct ways to measure BMI:– Skinfold Calipers:

• several measurements are taken at different locations on the body

– Bod Pod:• Subject enters a chamber, mass and volume are measured by

air displacement… a VERY accurate but expensive method

– Hydrostatic Weighing:• One of the most common methods, done underwater and

measures percentage of fat to lean muscle (weighed outside and then underwater)

– Bioelectric Impedence Analysis• Electrical current is sent through the body. Changes in the

current are measured and used to calculate lean body mass and body fat.

Skinfold caliper Bod Pod

Hydrostatic Weighing Bioelectrical Impedance


• Calculate your BMI:

BMI= [weight in lbs / (height in inches)2] x 703


• Calculate this person’s BMI:– Weight: 201 lbs– Height: 72 inches




• Is this woman overweight? Obese?



• With a partner, complete:– Ch. 8 Review (pg. 216)

• Section 1, questions 1-6• Section 2, questions 10 and 12• Section 3, 16

Calculating Body Mass Index Senior Health- Bauberger.

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