question archive It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar
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It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. A person's leg measures 40 cm between the knee and the hip, with an average leg diameter (ignoring bone and other poorly conducting tissue) of 12 cm A potential difference of 0.75 V causes a current of 1.6 mA
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Total resistance,
1/R = I/V
I/V = 1/Rm + 1/Rf
I/V = (Ax/pf L) + (A(1 - x)/pm L)
x = ((Ilp/VA) - 1)(pf/(pm - pf)
X = [(0.0016 x 0.4 x 13/0.75 pi x 0.06^2) - 1][25/(13 - 25)]
X = 0.0398 = 3.98 %
Percentage of muscle = 100 - 3.98 = 96.02 %
Fractions are: 96.02% and 3.98 %
