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| measuring, nukote, ziegler, accusplit, fax cartridge, lipids, accufitness, animal waste, digestion, lexmark, home, brother, balanced nutrition, healthy weight, giovannucci, a bomb, decreased, dex, | That is because skinny legs - with a lower cross-sectional area - will present higher resistance to current. So the machine thinks the water content of the body is lower lactation - rating the subject as fatter. Also, the system can only give an overall measurement of fat. Detector ring Tapp's method uses similar calculations, but is more sophisticated because lactation it tells you where the fat is. The subject stands in the scanner while a detector ring passes down the body (see graphic). At the same time, eight electrical coils also mounted on the ring generate lactation a radio-frequency electromagnetic field. As the energy passes through the body, the field's phase is shifted, depending on the conductivity of the tissue, and hence its water content. Eight detector coils record any shifts in the field's phase for each body slice. At the same time, four lasers sweep across the body. The reflected light is picked up by four digital cameras which build up an extremely high-resolution image of the subject's shape. |
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| At the moment, accusplit doctors estimate fat content from knowing body volume and water content. To a good approximation, says Tapp, anything that accusplit is not fat is water. The amount of water in the body is often measured by giving the subject a drink of water that contains a radioactive tracer. The level of tracer in the patient's urine after three hours reveals the total water volume. To find out a body's volume, subjects are weighed while totally submerged in water, and this is subtracted from their accusplit normal weight to give the weight of water displaced, and hence the subject's volume. But it is scarcely practical for seriously ill people. There are other ways to directly measure body fat, such as passing a minuscule current between the wrists and feet. The overall fat content can then be estimated from the body's resistance. But this method does not take body shape into account - so a subject with particularly skinny legs might register a higher fat content than the true value. |
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