Does the accuracy of bioelectrical impedance change as I build muscle?

Bioelectrical impedance is the process of sending a low-level electrical current through the body. Muscle is composed primarily of water and water is a conductor of electricity. The more water in the body, the less resistance the current will experience as it travels through the body. This reading can be a good indication of body fat, but many times the result is based on the hydration level of the individual. As an individual's muscle mass increases, the current will become even quicker and show a decrease or maintenance of the fat mass. It is recommended to perform this measurement first thing in the morning or after your first trip to the rest room in order to get an accurate reading. Get the most accurate reading by repeating the test over a three to four day period and take an average of the results. This assessment method generally serves as an accurate representation of body fat and it's accuracy does not change as an individual's body composition changes.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.