Bioimpedance
Bioimpedance, or body composition analysis, is a modern, non-invasive method used to determine the components of body weight—specifically, the amounts of muscle, fat, water, and minerals in the body.
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How to prepare?
When is the test not recommended?
Bioimpedance, or body composition analysis, is a modern, non-invasive method used to determine the components of body weight—the amounts of muscle, fat, water, and minerals in the body. During the test, a very weak and harmless electrical current is passed through the body, and based on tissue resistance, a computer calculates body composition.
This method allows you to:
- assess fat and muscle mass,
- determine fluid distribution in the body,
- calculate basal metabolic rate,
- monitor the results of weight management or treatment.
Bioimpedance is particularly useful in weight management programs, the development of nutrition plans, and the prevention of chronic diseases, as it provides much more precise information than just body weight.
How to prepare for a bioimpedance test?
To ensure the most accurate and comparable results possible, please follow these recommendations:
- Do not eat or drink any caffeinated beverages for 4 hours before the test.
- Do not consume alcohol for 24 hours before the test.
- Avoid strenuous physical activity 8–12 hours before the test.
- Avoid excessive fluid intake immediately before the test. Maintain your usual fluid intake on the day before and the day of the test.
- It is recommended that you empty your bladder before the test.
- On the day of the test, do not apply creams, lotions, or oils to your hands and feet, as these can impair contact with the electrodes.
Before the measurement, you will need to remove any metal objects (jewelry, watches, bracelets, rings, etc.) if they come into contact with the electrodes or could interfere with the measurement; you will also need to remove your shoes, socks, and tights.
Repeat measurements should preferably be taken at the same time of day and under similar conditions.
For women, when comparing results over time, measurements should preferably be taken during the same phase of the menstrual cycle.
When is a bioimpedance test not performed or not recommended?
- If you have a pacemaker or other implanted electronic medical device;
- If you are unable to stand securely on the bioimpedance device;
- Bioimpedance testing is not recommended during pregnancy.
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