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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.
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 here.
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. To learn more, read here.
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.
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.
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.
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.
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.
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.
Body water volume is closely related to fat free body mass. When fat free mass is subtracted from total weight, body fat mass remains.