Useful Information
Principle of body composition calculation
Body fat has low electric conductivity
The BF510 measures the body fat percentage by the Bioelectrical Impedance (BI) method. Muscles, blood vessels and bones are body tissues with a high water content that conducts electricity easily. Body fat is tissue that has little electric conductivity. The BF510 sends an extremely weak electrical current of 50 kHz and less than 500 ∝A through your body to determine the amount of fat tissue. This weak electrical current is not felt while operating the BF510.
In order for the scale to determine body composition, it uses the electrical impedance, along with your height, weight, age and gender information to generate results based on OMRON’s data of body composition.
Measures the whole body to avoid the influence of fluctuations
During the course of a day, the amount of water in the body tends to gradually shift to the lower limbs. This is why there is a tendency for the legs and ankles to swell in the evening or at night. The ratio of water in the upper body and lower body is different in the morning and evening, and this means that the electrical impedance of the body also varies. Since the BF510 uses electrodes for both hands and feet to take measurements, it can reduce the influence of these fluctuations on measurement results.
Recommended measurement times
Understanding the normal changes in your body fat percentage can help you in preventing or reducing obesity. Being aware of the times when the body fat percentages shift within your own daily schedule will assist you in obtaining an accurate trending of your body fat. It is recommended to use this unit in the same environment and daily circumstances. (See chart)
Daily activities
Waking up
Recommended time
Breakfast
2 hours
Recommended time
Lunch
2 hours
Recommended time
Taking a bath or
eating dinner
2 hours
Recommended time
Going to bed
After waking up
Before lunch and about 2 hours or more after breakfast
In the afternoon about 2 hours or more after lunch and before taking a bath or eating dinner
Avoid measurement immediately after eating or bathing.
Before going to bed and about 2 hours or more after dinner or bath
Avoid taking measurements under the following conditions
If a measurement is made under these physical conditions, the estimated body fat percentage may differ significantly from the actual one because the water content in the body is changing.
Avoid taking measurements:
-immediately after vigorous exercise Please wait for 2 hours or more
-after a bath or sauna
-after drinking alcohol
-after drinking lots of water
-after eating a meal
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