Tanita, like any other method save the 'pod' is relative - that is you can use it to compare bf% from one week to the next to track how you are doing.
Hydration levels are important with the tanita and you have to enter body type, sex and height so it can do the calculation. THe tanita scale sends a very low electrical current through your body and measures the resistance it encounters. Since muscle contains lots of water and conducts electrical currents well and fat doesn't, the electrical signal the scale receives back will be representative of the amount of muscle you have on your body. Taking your height and weight into account means that signal can be turned intoa bf%.
I don't believe in scales/monitors as an ultimate measurement of bf% but they are useful in tracking BF% variations from week to week. Just make sure you take the measurement at the same time of day each week - presuming you follow a similar diet/hydration plan.
Hydration levels are important with the tanita and you have to enter body type, sex and height so it can do the calculation. THe tanita scale sends a very low electrical current through your body and measures the resistance it encounters. Since muscle contains lots of water and conducts electrical currents well and fat doesn't, the electrical signal the scale receives back will be representative of the amount of muscle you have on your body. Taking your height and weight into account means that signal can be turned intoa bf%.
I don't believe in scales/monitors as an ultimate measurement of bf% but they are useful in tracking BF% variations from week to week. Just make sure you take the measurement at the same time of day each week - presuming you follow a similar diet/hydration plan.