General

Is BIA (Bioelectrical Impedance Analysis) accurate?

Historically, BIA technology, devices, and results have been met with some degree of skepticism. However, InBody technology addresses these concerns with its technological features and provides great precision and accuracy for total body and regional measurements. Learn more about InBody Technology.

How do InBody devices work?

InBody devices use direct segmental measurement bioelectrical impedance analysis (DSM-BIA) to precisely measure body composition by sending multiple electrical currents through the body, resulting in up to six different impedance readings for the trunk and each of the four limbs. The innovative in-depth analysis of the InBody Test yields accurate results for body composition outputs, such as body fat mass, skeletal muscle mass, (segmental) lean body mass, and percent body fat. Learn more about InBody technology.

How do InBody devices compare to other BIA devices and what are the major technical differences between the InBody and other BIA devices?

InBody's body composition analyzers rely on four pillars of technology to provide clients with accurate and precise results. This includes direct segmental measurements, multi-frequency bioelectrical impedance analysis (DSM-MFBIA), and no population based empirical estimations, such as gender and age.

Can the InBody test people with prosthetic limbs?

Unfortunately, the electrical currents utilized in InBody products are unable to flow through prosthetic limbs. The electrodes must come into contact with the body at all eight contact points: thumbs, palms, soles, and heels. The InBody S10 allows those with amputated limbs to test with the adhesive electrodes. However, the data for amputated limbs may not be accurate, so results should be analyzed by a medical professional for accurate health consultations.

Is everyone able to take an InBody test?

People with artificial electrical implants, such as a defibrillator or pacemaker, are recommended to avoid taking an InBody Test. The electrical currents utilized in InBody products may disrupt the functionality of life-sustaining implants. Women on their mentrual or who are pregnant are recommended to avoid taking an InBody Test as they may not obtain accurate results due to subtle changes in their hydration and body water levels.

How can percent body fat change within a time frame as short as one day?

Weight and body water changes can occur with the introduction of meals and fluids, or with a change in environment. Circulation of body water may also cause changes in water distribution throughout the day. It is recommended that repeat tests be performed under the same testing conditions, in the same environment, and at the same time of day as the initial test.

When measuring body composition on BIA devices, why do results change when height changes?

The volume of a cylinder, in this case the body, changes when the height of the cylinder changes. BIA devices consider the body as a cylinder and the volume of body water is calculated with the height and impedance of the body.

How is the InBody Score calculated?

The InBody Score is based on a formula that compares weight, muscle mass, and body fat mass. A person with a high body fat percentage would have a lower score than a person with a lower body fat percentage. Lowering body fat mass would increase the InBody Score.

What is impedance?

Impedance is the frequency-dependent opposition of a conductor to the flow of an alternating electric current. Impedance is composed of two main properties, resistance and reactance. InBody provides segmental impedance values at varying frequencies to allow for accurate analysis of the human body. Since reactance is the interrupting force of alternating current flow, it increases in proportion to the integrity of cell membrane. Therefore, reactance and phase angle decrease when the number of cells is low or the cell membrane is more permeable or unhealthy. The more water there is, the lower the impedance.

How does the InBody derive body fat measurements from body water measurements?

Body water volume is closely related to fat free body mass. When fat free mass is subtracted from total weight, body fat mass remains.

How are 8-point tactile electrodes different than adhesive EKG tape electrodes?

Adhesive tape electrodes are usually placed on the wrist and a fingertip. Voltage line and current flow line always overlap from a certain point, and that point is where measurement begins. However, it is almost impossible to place adhesive electrodes in the exact same place every time, thus the measurement starting points can differ. Rather than adhesive tape electrodes, InBody devices use tactile electrodes. Voltage line and current flow line overlap at the same point and allow for a secure and reproducible measurement starting point for each individual.

What are the advantages of using multiple frequencies instead of a single frequency?

Using multiple frequencies improves accuracy and precision. At a single, low frequency, it is difficult for electrical currents to penetrate the cellular membrane and assess intracellular water. As frequencies get higher, the electrical current is more capable of penetrating the cellular membrane and accurately measuring intracellular water.

Can the InBody test people with prosthetic limbs?

Unfortunately, the InBody’s electrical currents are unable to flow through prosthetic limbs. The electrodes must come into contact with the body at all eight contact points: thumbs, palms, soles, and heels. The InBody S10 allows those with amputated limbs to test with the adhesive electrodes. However, the data for the amputated limbs will not be accurate, so results should be analyzed by a medical professional for accurate health consultations.

Who are not recommended to take an InBody test?

People with artificial electrical implants such as a defibrillator or pacemaker are not recommended to take an InBody Test. The electrical currents of the InBody may disrupt the functionality of life-sustaining implants. Women who are on their menstrual cycle or are pregnant are not recommended to test as they may not obtain accurate results due to subtle changes in their hydration and body water levels.

What factors can affect the accuracy of my test results?

Changes in body composition reflect body status, which may be affected by factors such as disease, nutrition, hydration, and medication. Accessories such as jewelry may interfere with the electrical conductivity. Improper posture will also affect test results. It is recommended to maintain the same testing conditions from test to test to produce high data reproducibility and comparability.

Will I feel the electrical currents during the test?

For the average population, the electrical currents sent through the body during InBody Tests are too low to feel. However, there is a small possibility that individuals with tactile sensitivity may feel a slight sensation.

How do I find the nearest InBody Testing location to my address?

You can use our interactive Nearest InBody Testing Location map to find a facility near you!

https://inbodyusa.com/support/nearest-testing-location/