Video
BIA Explainer Video - BodystatBIA body composition monitor -
A number of similar methods of diagnosis were developed afterwards, but it managed to assert itself and today, is internationally accepted as the recognized method of use in a number of different areas in anthropology and nutritional medicine, and continues to gain importance.
Specialists around the world now take the opportunity to regularly meet at the BIA Consensus Conference that takes place at the American National Institute of Health NIH, to share and exchange their experiences, a sign of the continued further development and interest in this subject.
The use of impedance analysis is a reliable, simple, and highly cost-effective method, and provides medical practitioners with the opportunity to make differential diagnosis. A broad spectrum of instruments and software for specific areas of application that is developed continuously ensures ever-increasing precision and safety, and forms the basis for objective, long-term approaches to treatment.
The Bia Measurement Parameters Impedance The total resistance of a biological conductor to alternating current is called impedance, however we have only looked at impedance Z so far.
There are two components that form the impedance: 1. The resistance R, which is a pure ohms resistance of the electrolyte-containing total body water, and 2.
The reactance Xc, the capacitive resistance, which is present due to the condenser-like properties of the body cells. By measuring the phase angle, the determination and a differentiation of both of these components of impedance is possible.
Phase angle Modern BIA devices have phase sensitive electronics that enable you to take the measured total resistance and differentiate between the two components resistance and reactance.
The measurement's formula is built on the knowledge that the condensers in the alternating current circuit lead to a time delay t, meaning the current maximum is ahead in time of the voltage maximum. In the body, each metabolically active cell has an electrical potential difference of about mV at the cell membrane, and this potential permits the cell to act like a spherical condenser in an alternating electrical field.
Alternating current has a sinus wave, therefore the shift is measured in ° degrees and is described as a phase angle f phi or a alpha. To explain it in a more visual way - You will see a large phase angle for well nourished, "plump" cells with stabile membrane potentials, and comparable small phase angles with poorly nourished, "failing" cells that have low membrane potentials.
The phase angle, which is directly proportional to the BCM or body cell mass is of greatest significance at a 50 kHz frequency.
Pure electrolyte water has a phase angle of 0 degrees, while a genuine cell membrane mass would have a phase angle of 90 degrees. Contrary to the cells of the BCM, fat cells have hardly any metabolic activity and cannot be detected by phase sensitive measurements because of their minimal membrane potential.
Fat cells are pure storage cells. The phase angle is used as a general measure of the membrane integrity of the cells. It provides information about the state of a cell and the overall condition of a patient's body, and as direct measurement parameter or "basic value", it is less prone to errors resulting from problems affected by measuring technology.
Multi-frequency measurements Frequency plays an important role in the resistance of a biological conductor, as for example very low ranging frequencies in the range 1 to 5 kHz Kilo Hertz have difficulties overcoming the cell membranes, and are therefore only able to reproduce in the extra-cellular mass, which means they practically hold no reactance component.
That's why, to be able to calculate the extra-cellular water ECW , there are multiple frequencies that can be used. As the frequency increases, so does the phase angle and with it the capacitive resistance reactance. The maximum frequency is reached at about 50 kHz.
Higher frequencies will cause both, the resistance and the reactance to decrease again. Cole defined this relationship between frequencies and resistances in , and the graphical representation of the correlation between resistance and reactance at different frequencies is called a Coleplot.
The use of multi-frequency analysis provides an improved differentiation with regard to cell loss or water displacement, by assessing variations in mass of the extra-cellular mass ECM and the body cell mass BCM.
This process is especially beneficial in patients with a changed grade of hydration in the lean body mass, and patients with serious illness such as kidney or heart failure, or patients with edema and diseases that require the crucial monitoring of water balance dialysis, intravenous nutrition. This multi-frequency analysis has many advantages.
Resistance Inversely proportional to total body water, Resistance R is the pure resistance of a conductor to alternating current. Whereas fat mass has a raised resistance, lean body mass is a good conductor of electrical current, as proportionally it entails high amounts of water and electrolytes.
Perfusion and fluid content of the extremities therefore play an important role and explain the occasionally occurring over-proportional variations in resistance. They arise because of the influence of external conditions, such as ambient temperature and air-pressure, as well as internal factors such as for example congestion caused by illness and physical activity.
All of these conditions affect the water content of the extremities. This may also happen with very low water content of the extremities caused by high pressure or coldness.
The resistance measurement will be very much above the normal range with the result of this calculation method. The body water and therefore the lean body mass will tend to be too low and the body fat will be calculated as too high.
In another scenario, if the circulation in the extremities is increased or congested, the resistance shifts downwards. Body water and lean body mass appear too large, and calculations of the body fat will appear as too low in the results.
It is important to remember that the human body is never static, but functions with the help of a dynamic system, and that changes of the body water occur hourly and change on a daily basis. A current B. can therefore only be a snapshot of a dynamic system and of the condition at that point in time.
That's why several repeat and response measurements of the individual will provide a more accurate picture and improve the assessment of body composition. Reactance The resistance that a condenser exerts to an alternating current is called Reactance Xc.
Due to their protein-lipid layers, all cell membranes of the body act like mini-condensers and reactance therefore is an assessment of the body cell mass.
General Principles Bioelectric impedance measurements BIM is the term representative for a variety of traditional and new noninvasive procedures and technologies that use electric current.
With the help of one or more surface electrodes, a tiny amount of electrical current is activated and is detected at surface electrodes placed elsewhere on the body, once the resultant electricity pulse has passed through.
As it quickly proceeds through the various physiological sections of the body, and passes through, a drop in voltage occurs. The current encounters impedance or resistance inherent in the fluids and tissues it passes through the various areas, among them the intracellular space, the lymphatic system, the bloodstream and others.
The drop in voltage delivers indirect information about the physical properties of the sections, where current has passed through. Alternating Current Bioelectric Impedance Analysis BIA : Among the various number of A. BIA models that are presently on the market, most are used for the obliquely measurement of total body water and to estimate the fat content of the body.
BIA, which uses alternating current A. as the most common form of testing, employs A. Various systems, varying broadly in complexity and design, operate with a wide range of intensities, frequencies and currents.
For the patient, the amount of electricity delivered to the body is generally hard to even detect and far below any level that would result in cellular or tissue damage. Once electric currents at or above 50 KHz are used, they flow non-selectively through extra cellular spaces as well as intracellular ones, as has been confirmed by various A.
BIA studies. Once current has been sent to active tactile electrodes at a frequency at 50 KHz, its intensity enables the system to measure the reactance and resistance between 2 other passive tactile electrodes tetra-polar mode.
BIA and Its Calculated Parameters Total Body Water TBW Impedance measurements provide a quite accurate picture of electrolyte water contained in tissue. Orally ingested water, which has not yet been absorbed by the body, is not measured; the same goes for ascites, because it is not part of the lean body mass.
Administered solutions, however, are detected immediately. Lean Body Mass LBM The lean body mass is for the most part made up of inner organs, muscles, the skeletal system and the central nervous system, and refers to the tissue mass of the body that contains no fat.
These organ systems, although morphologically very different, contain matching functional structures. All of them contain matrix substance and extra-cellular fluids that support the metabolic exchange and assist in substrate transport and are made of cells that execute the synthesis and metabolism processes in the body.
In cases of for example edema or intensive car patients, where the quantity of lean body mass hydration is pathological, irregular calculations may be gathered for body cell mass, lean body mass, and extra-cellular mass - the secondary parameters - and will make the assessment of BIA measurements more difficult.
It helps in these cases, to look at the initial assessment and values for resistance, phase angle and reactance.
The lean body mass contains of two subdivisions. One is the body cell mass BCM, also referred to as the motor of the organism, and the other one is the connective tissues and transport medium, the extra-cellular mass ECM. Body Cell Mass BCM All tissue of the human organism entails to a certain degree Body cell mass, and the sum of all cells that are actively involved in the metabolic processes is called BCM.
While it is rather a functionally defined section and not so much an anatomically one above all, it consists all of the cells of the inner organs and muscles, with the muscles and the highest percentage to constitute the largest part of the BCM.
Connective tissue with low fibrocyte content however only makes up a small percentage of the entire BCM, and adipocytes, due to their low energy metabolism are not at all considered being part of the BCM. Consequently, the sum of adipocyte cells therefore forms its own compartment in the body.
Included in the BCM are the following tissue forms: the smooth muscles, the cells of the skeletal muscle system, the inner organs, the cardiac muscles, the blood, the gastrointestinal tract, the nervous systems and the glands.
As all of the body's metabolic function is performed within the cells of the BCM, the BCM is the main specification for the analysis of a patient's nutritional state.
It is also used as the standard specification for establishing the calorific requirement of the body and for the assessment of energy consumption. In addition to the catabolism, the BCM also performs work on the anabolism including the keeping up of synthesis and cell structures for the ECM: For example the transportation proteins and enzymes, and the formation of connective tissue fibres, cartilage tissues and bones.
A person's body cell mass is a fractional constituent of the lean body mass, and a number of factors, such as age and physical condition or genetics constitution type play a role in the BCM that is available in an individual. A higher percentage of body cell mass present in lean body mass is for example found in young people with high physical activity, such as competitive athletes.
Their muscles are trained in the maturation phase of the body, and as a result, this higher proportion tends to be found in these individuals throughout their lives persistent hypertrophy of the muscle cells.
Age is also a factor in BCM. Older persons that are active, however, can retain their BCM to a large degree. How Well Do You Sleep? Health Conditions Discover Plan Connect.
Nutrition Evidence Based The 9 Best Body Fat Scales for Medically reviewed by Marie Lorraine Johnson MS, RD, CPT — By Rachael Ajmera, MS, RD — Updated on December 5, On this page How they work Our picks Comparison How we chose How to choose Understanding body composition FAQs Bottom line.
How we vet brands and products Healthline only shows you brands and products that we stand behind. Our team thoroughly researches and evaluates the recommendations we make on our site.
To establish that the product manufacturers addressed safety and efficacy standards, we: Evaluate ingredients and composition: Do they have the potential to cause harm?
Fact-check all health claims: Do they align with the current body of scientific evidence? Assess the brand: Does it operate with integrity and adhere to industry best practices? We do the research so you can find trusted products for your health and wellness. Read more about our vetting process.
Was this helpful? Share on Pinterest. A quick look at the best body fat scales. Best for unlimited users: FITINDEX Bluetooth Body Fat Scale Skip to review. Best without an app: Triomph Precision Body Fat Scale Skip to review.
Best for large households: Eufy Smart Scale C1 Skip to review. Easiest to set up: YUNMAI Premium Smart Scale Skip to review. Best for small households: Omron Body Composition Monitor and Scale BCM Skip to review.
Best budget-friendly: Greater Goods Body Composition Scale Skip to review. Best value: RENPHO Body Fat Scale Skip to review. Best handheld: Omron HBFC Handheld Body Fat Loss Monitor Skip to review. How do body fat scales work? A comparison of the best body fat scales.
How we chose these scales. What to look for when shopping for a body fat scale. Understanding body composition. Frequently asked questions. What's the difference between a body fat scale and a regular scale? Are body fat scales accurate?
Are body fat scales safe? If you have a pacemaker, talk with a healthcare professional before using a body fat scale. What is the difference between BMI and body fat percentage?
What should my body fat percentage be? The bottom line. Interested in more? How we reviewed this article: Sources. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
Dec 5, Written By Rachael Ajmera, MS, RD. Jul 28, Written By Rachael Ajmera, MS, RD. Medically Reviewed By Marie Lorraine Johnson MS, RD, CPT. Share this article. Read this next. How Accurate Are Body Fat Scales?
Accuracy can also… READ MORE. What Is My Ideal Body Fat Percentage? Medically reviewed by Elaine K. Luo, M. This article explores how to measure body fat at home… READ MORE. The 12 Best Bathroom Scales.
By Rachael Ajmera, MS, RD. The 6 Best Smart Scales. What Are the Three Male Body Types?
Body compposition analysis composltion what the body BAI made of, differentiating vody BIA body composition monitor water, Weight management resources, minerals, and fat to provide more precise information beyond weight and BMI. Charder's devices use Bioelectrical Impedance Hormonal imbalance and thyroid health BIAfor fast, mknitor, non-invasive, and easily repeatable analysis. Boasting multiple measurement frequencies and sophisticated algorithms, Charder stands by our devices with clinical trials and over ten years of original peer-reviewed scientific research, for results you can trust. Charder uses Bioelectrical Impedance Analysis BIA to estimate body composition. At its core, the concept of BIA is based on the differing electrical conductivity of body tissue. For example, electrolyte-containing body water is a good conductor of electricity, whereas fat acts as an insulator. The BF from Tanita is conposition FDA cleared and Health Bkdy approved body composition analyzer. The BF transmits a very Sugar-free meal options, safe electrical mpnitor from four metal electrodes through the feet BIA body composition monitor the Ac and heart health and abdomen. The electrical signal passes quickly through water that is present in hydrated muscle tissue but meets resistance when it hits fat tissue. This resistance, known as impedance, is measured and input into scientifically validated Tanita equations to calculate body composition. The algorithm includes additional information such as gender, age, and height alongside weight and impedance values and were developed by collecting data from thousands of people worldwide to ensure the most reliable results possible.
0 thoughts on “BIA body composition monitor”