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Body Fat Testing FAQ

The following are commonly asked questions regarding No Limit’s InBody Testing Machine

How long does it take to perform a test?

The InBody test lasts between 45 seconds to 120 seconds

Why do I need to remove my shoes and socks for the test?

The bottom of your feet must be in direct contact with the electrodes, clothing items such as shoes, socks, stockings or leggings must be removed for the most accurate results.

What are important guidelines users should or should not do before a test?

Before a test, you should: 
• Refer to the No Limit Checklist at least 24 hours prior to testing

  • Use the restroom
    • Maintain the same testing conditions if you have tested prior
    • Use an InBody tissue to wipe down your hands and feet
    • Avoid eating or wait 3-4 hours after a meal 

Avoid testing if before the test, you: 
• Exercised strenuously at least 6-12 hours prior
• Used a sauna or steam room

  • Have taken a shower or bath
    • Consumed diuretics such as caffeine, alcohol, and medication
    • Have a fever, cold, or chill
  • Are a female and currently menstruating or are pregnant

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.

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.

Who are not recommended to take an InBody test?

  • People with artificial electrical implants such as a defibrillator or pacemaker should not be tested. The electrical currents of the InBody may disrupt the functionality of life-sustaining implants.
    • Women who are on their menstrual cycle may not obtain accurate results due to subtle changes in their hydration and body water levels. 
    • Pregnant women are not recommended to take the test because of the body’s constant fluctuations during pregnancy as well as the machine’s electrical currents.

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

  • The use of multiple frequencies to accurately measure intracellular and extracellular water 
    • 8-point tactile electrode system with patented thumb electrodes providing a direct and reproducible measurement 
    • Segmental impedance measurements to include accurate lean body mass measurements of the trunk 
    • No empirical estimations required. No population-based statistical data is used in calculating results.

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 do InBody devices work?

InBody devices use direct segmental measurement bioelectrical impedance analysis (DSM-BIA), a patented technology, 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.

What is impedance?

Impedance is defined as the strength and speed of an electrical current through the body, measured in Ohms. Bioelectrical impedance analysis is based on the fact that tissues with high water content act as a conductor of an electrical current, whereas fat tissue interferes with electrical conductivity. The more fat there is in the body, the higher the impedance

Is BIA technology accurate?

Historically, BIA technology, 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.

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.

After my test is completed and referring the results, what am I supposed to be looking at?

Review your overall body composition percentages. Use your PBF score and translate your current results using the No Limit Body Fat % Chart.

How often can you measure body composition?

The frequency of measurement is fully dependent on each facility and program. InBody recommends testing every 4-8 weeks.

What’s a healthy body percentage fat loss per month?

Unlike the well-researched and accepted guideline that an individual should lose no more than 1-2 pounds per week, body fat percentage loss is not as well studied and no official guidelines have been published.  Still, most experts agree that a 1% loss per month is generally safe and doable. 

How Can I Decrease My Body Fat?

Weight loss alone won’t necessarily lead to huge decreases in body fat since weight loss without exercise will lead to decreases in lean mass as well.  If you really want to decrease your body fat percentage you’ve got to eat better, do cardiovascular exercise AND remember to do resistance training to build up your lean mass, otherwise about 25% of every pound you lose will come from lean, calorie-burning muscle. 

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