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Smart scale accuracy

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Smart scale accuracy

We use bioelectric impedance analysis (BIA) in our smart scales to deliver your body composition results in a quick, easy, and cost-effective way.

What is Bioelectric Impedance Analysis (BIA)?

Bioelectric Impedance Analysis to measure body composition, which includes measures like body fat in relation to lean mass. For more information about other methods to measure of body composition, click here.

How does BIA work?

To determine body fat, an extremely low electrical current through the body. The device measures the amount of impedance to the electrical current, which is affected by the amount of water in tissues. Muscle and fat tissues contain differing amounts of fluid which affect conductivity; blood has high conductivity, while tissues like bone and fat have lower amounts. The device takes the information and then calculates the amount of water in the body with the amount of body fat being part of the conductivity equation.

How accurate is BIA?

BIA is a lower-cost and moderately accurate way to estimate body fat percentage. According to researcher Bartok Buchholz, BIA "may be acceptable for determining body composition of groups and for monitoring changes in body composition within individuals over time" (2004). It is within a 4% margin of error.

The BIA method is most accurate when done at the same time every day, like first thing in the morning, right before training, or after hydrating, since results can vary based on hydration levels.The numbers from BIA may also vary from those given by other measurement methods and professional medical instruments because it is designed for home use and reference.

To see how a smart scale would work for you, try one of our Yunmai models!

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  • Sophie Newman
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