Body fat percentage measurement
| Use the Bioelectrical Impedance Analysis (BIA) technique. This method measures body composition by sending a low, safe electrical current through the body. The current passes freely through the fluids contained in muscle tissue, but encounters difficulty/resistance when it passes through fat tissue. This resistance of the fat tissue to the current is termed ‘bioelectrical impedance’, and is accurately measured by body fat scales. When set against a person’s height, gender and weight, the device can then compute their body fat percentage. |
There are a few ways to get the informance needed to keep track of your progression
Using products that calculate your body fat precentage is easier then doing the calculations below:
Calculation of Body Fat %
Lukaski & Bolonchuk’s (1988)[1] formula for total body water (TBW) is:
- TBW = 0.372(S²÷R) + 3.05(Sex) + 0.142(W) – 0.069(age)
- S = Height in centimetres
- R = Resistance
- W = Weight in Kg
- Sex Male =1 Female = 0
- Age in years
Example
Athlete is male, 25 years old, height 170cm, weight 65kg – measured resistance is 382
- TBW = 0.372(170² ÷ 382) + 3.05(1) + 0.142(65) – 0.069(25)
- TBW = 38.7kg
The hydration constant of the fat free mass (FFM) is 0.73 so we can determine the FFM
- FFM = TBW ÷ 0.73 = 38.7 ÷ 0.73 = 53.01 kg
The Fat Mass = Weight – FFM = 65 – 53.01 = 11.99kg
Body Fat % = Fat Mass ÷ Weight x 100 = 11.99 ÷ 65 x 100 = 18.5%
Purchase products that calculate your body fat precentage using bioelectrical impedance technology here
Here are the types of products that will help
Hand Held
Omron HBF-306C Fat Loss Monitor, Black
Easy to use place your height, weight, build, sex, age and place your hands on the device and let the machine work. This is the most commonly used device used in fitness centers because of the compactness, quick results and efficiency it brings to the table. Low costing you can get one for under $40 bucks today. Purchase one here.
Omron Body Composition Monitor With Scale
So you would like to try the scale out to with the BF% examiner this is the top of the line scale here. Made by one of the most well trusted fitness product producer out in the market Omron. You will not find a better scale this is one here. For under $80 bucks Purchase one here.
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