Daily Archives: August 22, 2015

ACCURATE FAT PERCENTAGE

What are the most accurate methods for measuring the percentage of fat, whether electronic scales accurate and reliable, we’ll learn through forth the following text.

Electronic scales for measurement are available in countless models. They use a technology called bioelectrical impedance, and assesses how much body fat you have, the percentage of muscle mass, water content, etc … When you step on the scale, the sensor plays an imperceptible electrical current flow through the whole body and back up again. Because it contains much more water, muscles conduct electricity better than fat, so if is greater resistance more fat you have. Scales used formula to calculate the percentage of body fat which include this information resistance, together with other data you have entered (height, weight, age, gender). Some scales contain and handle where the electrodes pass through the hands of such scales better assess total body fat. An increasing number of electronic scales associated with computers, or have their own display, which automatically transmitted data and printed on paper.

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Are electronic scales accurate? One of the problems with scales that measure body fat is that they are often incorrect or inaccurate. Many variables affect the results, including how hydrated you are, when you last ate, even if your feet have calluses or dirty, as well as the type and quality of the product and whether it is regularly serviced. Studies have shown that the results which give electric scales are often different from the results that provide a standardized method of measuring fat. Devices that have manual electrodes tend to go a little better. In a study published in Obesity Facts In 2008. the balance to only a foot electrodes underestimate body fat in people with a lot of body fat and overestimating on a tinner people. Even manuals say that devices may be less accurate for older people, in highly trained athletes, children and persons with osteoporosis.

Are electronic scales needed? Certainly progress and checking whether we win or lose fat is definitely needed. Some researchers say that the scales for measuring body fat can be useful for tracking changes over time and can help to motivate some people to lose weight (regular scales of course also can help but do not have the insight into how fat you are and how much muscle gain or lose but only if you lose or put on pounds, which can be very confusing and daunting). However, testing your body fat is not something you need to do is constantly on a daily or weekly basis, but you need to allow a longer period and do the test again.

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Other tests and measurements. One of the best ways to see if you have too much body fat is simply measuring the waist. Then index of body fat or BMI, which takes into account weight and height, is another good measure. If you want to measure your percentage of body fat, it is best to measure the professionals at the university and research center, hospital or sports medicine clinic. The methods used include hydrodensitometry (underwater weighing, it is considered the most accurate), then Bod Pod (which uses air instead of water) and DEXA scanning (type X-ray which is similar to test bone density). Body fat can be measured using the same caliper, but the accuracy of the results depends on the skill of the person doing the test.

Today in the world in medicine and fitness are more applicable 3D scanners which do a detailed analysis of the body by means of laser and camera. Fitness industry is growing so in the future almost every fitness center will have these kind of scanner. These scanners will be an integral part of every fitness center and it will be able to easily and accurately monitor the progress of clients.

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PRECIZNOST MERENJA MASTI U ORGANIZMU

Koje su najpreciznije metode za merenje procenta masti, da li su elektronske vage precizne i pouzdane, saznaćemo kroz sledći tekst.

Elektronske vage za merenje su dostupne u bezbroj modela. One koriste tehnologiju koja se zove bioelektrična impedansa, i procenjuje koliki procenat masti imate, procenat mišićne mase, procenat vode itd… Kada stanete na skalu, senzor pušta jednu neprimetnu električnu struju koja prolazi kroz celo telo i vraća se nazad. Zato što sadrži mnogo više vode, mišići sprovode struju bolje nego masti, tako da ako je veći otpor više masti imate. Vage koriste formule za izračunavanje procenta telesne masti gde uključuju ove informacije otpora, zajedno sa drugim podacima koje ste uneli (visina, težina, starosti, pol). Neke vage sadrže I ručke gde elektrode prolaze kroz ruke, takve vage bolje ocenjuju ukupne telesne masti. Sve veći broj elektronskih vaga je povezano sa kompjuterima, ili imaju svoj displej, gde automatski prenose podatke I štampaju na papir.

Da li su elektronske vage tačne?

Jedan od problema sa vagama koje mere telesne masti je da su često netačne ili neprecizne. Mnogo promenljivih utiču na rezultate, uključujući i koliko ste hidrirani, kada ste poslednji put jeli, pa čak i da li tvoja stopala imaju žuljeve ili su prljava, kao i vrsta i kvalitet samog proizvoda I da li je redovno servisiran. Studije su pokazale da rezultati koje daju električne vage često se razlikuju od rezultata koje daju standardne metode merenja masti. Uređaji koji imaju ručne elektrode imaju tendenciju da prolaze nešto bolje. U studiji objavljenoj u Obesity Facts u 2008. godini, vage sa samo stopalnim elektrodama potcenjuju telesne masti kod ljudi sa puno telesne masnoće i precenjuju ga kod vitkijih ljudi. Čak i priručnici kažu da uređaji mogu biti manje precizni za starije osobe, kod visoko treniranih sportista, kod dece i osoba sa osteoporozom.

Da li su elektronske vage potrebne?

Svakako napredak I proveravanje da li smo dobili ili izgubili masti je svakako potrebno. Neki istraživači kažu da vage za merenje telesnih masti mogu biti korisne za praćenje promena tokom vremena i da mogu da pomognu za motivisanje nekih ljudi da izgube težinu (redovne vage mogu naravno isto da pomognu ali nemate u uvid koliko ste masti a koliko mišića dobili ili izgubili, već samo da li gubite ili dobijate kilograme, što može biti jako zbunjujuće I obeshrabrujuće). Ipak, testiranje vaše telesne masti nije nešto što treba da uradite stalno na dnevnoj ili nedeljnoj bazi, već trebate da  pustite neki duži period pa uradite opet testiranje.

Ostali testovi i merenja.

Jedan od najboljih načina da se vidi da li imate previše telesnih masti je jednostavno merenje struka. Zatim Indeks telesnih masti ili BMI, koji uzima u obzir težinu i visinu, je još jedna dobra mera. Ako želite da izmerite svoj procenat telesnih masti najbolje je da ga mere profesionalci na univerzitetu i istraživačkom centru, u bolnici ili sportskoj medicinskoj klinici. Metode koje se koriste uključuju hidrodensitometriju (podvodno merenje, smatra se najpreciznijim), zatim Bod Pod (koji koristi vazduh umesto vode) i DEKSA skeniranje (tip X-zraka koji je sličan testu koštane gustine). Telesne masti mogu se meriti isto pomoću KALIPERA, ali tačnost rezultata zavisi od stručnosti osobe koja radi test.

Danas u svetu kako u medicini tako I fitnesu su sve primenljiviji 3D skeneri koji rade detaljnu analizu tela pomocu lasera I kamera. Cena skenera dostiže visoku cenu ali pošto se fitnes industrija razvija jako ubrzanio I dosta se ulaze u nju , ovi skeneri će biti sastavni deo svakog fitnes centra I moći ce lakše i preciznije da prate napredak klijenata.

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