They work off of BMI which if you are quite muscular are obviously inaccurate.
Tanita Ironman BC-558 does not work off BMO well atleast I dont think so. If it did everyone same height and weight would have same BF%
Maybe I'm missing something
Your supposed to set it before you use it to your height and weight like all scales no? It will then go off an equation for the average user as to what your bf to height ratio should be. It uses (BIA) to determine an individual's body fat percentage. "To achieve this, the meter passes a small, harmless, electric current through the body and measures the resistance, then uses information on the person's weight, height, age, and sex, to calculate an approximate value for the person's body fat percentage. The calculation measures the total volume of water in the body (lean tissue and muscle contain a higher percentage of water than fat), and estimates the percentage of fat based on this information. The result can fluctuate several percent depending on what one has eaten and how much water one has consumed prior to the analysis."
Because it still runs off of an algorithm based on average humans it is not as accurate for athletes or those who are muscular.
Thanks for that but since it also uses "To achieve this, the meter passes a small, harmless, electric current through the body and measures the resistance, " it cant be strictly BMI right?
I have used this scale and then did Hydrostatic Testing for BF% and it was off 1.5 % on the low side
Yes, but the resistance is also measured and then calculated using an algorithm based on a common human denominator. So it will be more accurate if your are closer to the average weight for your height, even though I know some have an athletic algorithm to use as well, it won't be as accurate for those who have a lot more muscle mass. That particular scale is still better than your average home scale though and for the average joe or weekend warrior it would suffice. I would still choose more viable means, but use them less often.
Thanks for taking the time to explain all this.
:biggthumpup: