InBody 580 Body Composition Analyzer
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InBody | 580
The InBody 580 Body Composition Analyzer is the four-frequency analyzer in InBody's range, and one test takes twenty impedance measurements in about 30 seconds. The four frequencies, 5 kHz, 50 kHz, 250 kHz and 500 kHz, are each read separately at both arms, both legs and the trunk. The fourth speed, 250 kHz, does not appear on the InBody 380 or the InBody 270S. Twenty readings are why the 580 reports by segment what the 380 reports as one figure. Impedance is the opposition the body puts up to the current.
Segmental means each arm, each leg and the trunk is measured on its own and reported on its own. Segmental Phase Angle is the first of three, and phase angle is the single number worked out from the impedance readings. The 580 reports it at 50 kHz, once per body segment. Segmental ECW/TBW analysis is the second, and ECW/TBW is the share of your body water that sits outside the cells. Segmental Intracellular Water is the third. Visceral Fat Area prints where the InBody 380 prints Visceral Fat Level, and visceral fat is the deep fat held inside the abdominal wall. Intracellular and extracellular water arrive as standard outputs. So does Soft Lean Mass, which measures lean mass with the bone mineral subtracted from it. Lean Body Mass is the total of everything on you that is not fat, and it prints with Body Fat Mass. Skeletal Muscle Mass is the voluntary muscle you use to move, and Percent Body Fat sits beside it. Segmental Lean Analysis and Body Composition History finish the standard list. The device covers 5 to 300 kg and 95 to 220 cm, and stores up to 100,000 measurements when an ID is entered. A 10.1 in. color TFT LCD drives the interface, against 7 in. on the InBody 570 and the InBody 270S. The carton holds a box of 300 InBody tissues and a LookinBody Web credit that expires 90 days after the device reaches you. InBody backs the 580 with a 1 year manufacturer's warranty.
How the measurement works
Multi-frequency bioelectrical impedance analysis is the method every device in this range uses. A small current goes through the body at more than one speed, and the device reads how hard each speed is to push. The frequency count is the multiplier on everything downstream of it. The InBody 580 carries four where the InBody 380 and InBody 570 carry three and the InBody 270 carries two.
The numbers
The InBody 580 sends four frequencies, reports its outputs segment by segment, and drives a 10.1 in. color TFT LCD with up to 100,000 measurements stored in the device.
Closer look
The InBody 580 takes 5 kHz, 50 kHz, 250 kHz and 500 kHz readings at the right arm, the left arm, the trunk, the right leg and the left leg. Four frequencies at five segments is twenty readings, and the whole sequence is timed at about 30 seconds. Contact happens at eight points: two on each hand, two on each foot. The current electrodes are separate from the voltage electrodes, so skin resistance at the contact point stays out of the measured value. The device covers a weight range of 5 to 300 kg and a height range of 95 to 220 cm, for ages 3 years and older. The InBody 380 covers the same three ranges on one frequency fewer.
Segmental Phase Angle, Segmental ECW/TBW analysis, Intracellular Water and Extracellular Water all sit among the InBody 580's standard outputs. On the InBody 380 the equivalent entries are Whole Body Phase Angle and a single ECW ratio figure. On the InBody 270S and the InBody 270, neither ECW/TBW nor segmental phase angle appears at all. The 580 gives these as five separate numbers, one per segment, measured at 50 kHz. A clinic tracking one limb against another reads those five numbers side by side. What a value means for a given person belongs to the professional reading the result sheet at the end of the test.
Compare
The 250 kHz frequency belongs to the InBody 580 alone. The InBody 270S, 380, 570 and 270 run three current speeds or two, and none of them carries a fourth. That fourth speed takes the test from fifteen impedance measurements to twenty. It also puts phase angle and the water ratio on the sheet segment by segment. The InBody 380 and the refurbished InBody 570 report each of those as one whole body figure.
Questions
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