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1.What You Should Know When Using This Unit
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1. What You Should Know When Using This Unit
1.1 What is Body Fat Percentage?
Body fat percentage refers to the amount of body fat
mass in regards to the total body weight expressed as
a percentage.
This OMRON BF400 will provide your specific body fat
percentage and body weight. It is also an excellent tool
to estimate your body fat percentage and measure
body weight on a continuous schedule.
Body fat percentage (%)
= {Body fat mass / Body weight} x 100
Body fat reading is affected by the change of
water content in the body.
A person’s hydration level and blood circulation may have an effect on their body fat
reading. In the table below are some situations which could affect the reading.
Cause of Fluctuations Examples of Fluctuation
Water and food intake 1 to 2 hours after breakfast, lunch or dinner
Changes in blood circulation
After taking a bath or shower, immediately
after exercising, in extreme environments
(warm or cold), during illness or extreme
fatigue
Body
Weight
Fat mass
Fat-free mass
Bones
Blood
Muscles
Water
HBF-400.book Page 5 Wednesday, October 15, 2008 12:05 PM