A bioimpedance is a type of body assessment that shows indices of muscle mass, fat, bone density and other important components.

With this number, it is possible to prevent diseases, set up specific diets and train ideas to achieve the goal.

In this article, I explain exactly how the procedure works, the advantages and the differences from other types of measurement. Check it out!

What is bioimpedance and why is it important?

Bioimpedance is a procedure that assesses body composition, providing information on the amount of water, muscle mass, visceral fat, bone density and basal metabolism rate.

This test is widely used in gyms and as a complement to nutritional consultations. These indices allow you to adapt your diet and training, as well as monitor your bodybuilding results.

Bioimpedance is carried out using special scales, such as Tanita or Omron, which have metal plates capable of conducting a light electric current through the entire body.

• Read also: What is the difference between a sports doctor, nutrologist and endocrinologist?

Bioimpedance test: understanding how it works

The test is measured by passing an electric current through the metal plates that make the bioimpedance devices capable of revealing the percentage of fat, muscle, bone and water in the body.

Before the procedure, the patient must fast for four hours, without eating or drinking any liquids. In addition, it is not recommended to consume caffeine for at least two days before the test. 

The test is carried out as follows:

• You will climb barefoot on a metal scale (which measures the lower part of the body); 
• And also hold a metal plate in front of your body (which measures your upper body parts). 

To get the most accurate result, the best way is to combine these two methods. Also, pay attention to previous recommendations, they make a difference to the result. 

Thus, the fluidity or resistance through which the current passes through certain parts of the body allows the device to calculate values that indicate the amount of lean mass, fat and water in the body.

Finally, it is a painless procedure that guarantees assertiveness in measuring body percentage and assists in physical health procedures and treatment and complements medical monitoring. 

Benefits of bioimpedance assessment

The bioimpedance test reveals the percentage of:

• lean mass;
• fat mass;
• visceral fat;
• hydration level;
• muscle mass;
• optical density;
• basal metabolism rate.

For this reason, bioimpedance testing plays a significant role in preventive medicine and also in achieving results with bodybuilding.

Differences between bioimpedance and other body assessment techniques

Bioimpedance is a simple and precise technique, but there are other ways of assessing body composition. Check them out: 

• Skin foldsThis technique measures the thickness of the subcutaneous fat layers in different parts of the body. This is done using an adipometer. The procedure does not provide data on muscle mass or other body components.
• Body densitometryThis is an advanced technique that measures body density using dual-energy X-ray absorptiometry (DXA). DXA provides accurate estimates of fat, muscle mass and bone density. 
• Single-energy X-ray absorptiometry (DXA): This technique is similar to DXA, but only uses x-rays. It is often used to assess bone mineral density, but can also provide data on fat and muscle mass.
• Computed tomography (CT) and magnetic resonance imaging (MRI)These advanced imaging techniques can distinguish between different types of tissue, such as fat, muscle, organs and bones. 

In short, bioimpedance is a practical, fast and affordable body assessment technique. 

How do I know if I can have a bioimpedance test?

Everyone can take the bioimpedance test except:

• pregnant women;
• people with pacemakers, pins or plates;
• amputees;
• people who are unsteady on their feet;
• during the menstrual period;
• people weighing less than 10 kg and more than 180 kg;
• people under 1 meter tall.

Bioimpedance: how often should I do it?

The test can be carried out whenever necessary, with a minimum interval of 30 days. 

In addition, if it is a medical or nutritional recommendation, the patient can carry out the test independently, without the need for a consultation.

Bioimpedance evaluation: frequently asked questions

Here are the main questions about bioimpedance. Check out the answers to understand everything about it.

Is bioimpedance safe?

Yes, bioimpedance is considered a safe method. The electric current used is very weak and does not cause significant damage or discomfort.

However, it is important to note that there are some restrictions for pregnant women and people with pacemakers, for example.

Can bioimpedance prevent disease?

Yes, because by assessing the percentage of body fat and the volume of muscle mass, it is possible to correct the imbalance before it becomes a disease.

Which doctor does bioimpedance evaluation?

Both nutritionists and endocrinologists can perform bioimpedance. The test can be carried out during assessments at the gym.

• Read also: Endocrinologist in São Paulo: how to choose the best?

Can I trust bioimpedance results to monitor my weight?

Yes, bioimpedance is considered an accurate method for assessing body composition. However, it needs to be carried out under the right conditions: up-to-date equipment and prior preparation of the patient.

Conclusion

Bioimpedance is a body assessment technique that provides information on body composition, including indices of muscle mass, fat and bone density, among other important components.

This technique has become a valuable tool for health professionals, athletes and individuals concerned about their health and fitness, enabling more targeted and personalized approaches to achieve desired results.

Finally, to ask questions about your case or to take a bioimpedance test, talk to an expert.