I recently purchased the Garmin Index2, after returning a Withings Body Cardio. I exported my data from the cardio.
Looking at the respective data I find that the Withings body compsition weights do total back near enough to the total body weight.
Categories per withings Health Mate App: :-
Fat Kgs (A)
Skeletal Muscle kgs (B)
Bone Mass kgs (C)
Hydration Kgs (D)
Recorded Weight = A+B+C (D being a guide to hydration.)
Comparing the Data I get on my Index2 I'm seeing nowhere near the same pattern
Fat, bone mass & hydration data is all pretty comparable within a few % variation.
Where I'm seeing an enourmous difference is in Skeletal Muscle Mass which is on average only 52% of the withings figure.
I don't understand why this should be. Can anyone explain.
I have the actual data available if anyone is interested.