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Old 02-16-2017, 06:29 AM   #1
Junior Member
Join Date: Feb 2017
Posts: 1

Question Confusion with Body Fat estimations

I've been working on losing weight.
I am weighing myself weekly with a shops public digital scales.

Last week:
Body fat estimation:

Fat index = 57.7 %
Fat Mass = 10st 1.6lbs
Free F. Mass = st 6.0lbs

Weight: 17st 7.6 lb Height: 5ft 5

This week:
Body fat estimation:

Fat index = 48.7%
Fat Mass = 8st 7.4lbs
Free F. Mass = 8st 13.4lbs

Weight: 17st 7.2 lb Height: 5ft 5

Can someone please explain the difference between the Fat index/Mass/Free F. Mass?

Why did some increase and some decrease, even though I'd lost weight?


Last edited by Froooby; 02-16-2017 at 06:29 AM.
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Old 02-18-2017, 12:13 PM   #2
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Join Date: Jun 2000
Location: Yorktown, VA USA
Posts: 5,401


Because these scales aren't accurate. If you are more hydrated one time than another, it affects the result. Quit concentrating on the scale and concentrate on healthy eating and exercise.

HW 356 pounds - CW 135 - GW 137

Life isn't about waiting for the storm to pass. It's about learning to dance in the rain.
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Old 02-26-2017, 06:40 AM   #3
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Join Date: Jan 2012
Location: Globetrotter
Posts: 176

S/C/G: 288/259/175ish?

Height: 5ft4


+1 digitsl scales body composition analysis is never great. Scales are good for weight numbers but outside of that I wouldn't pay too much attention to what they say.

Back in the game and in it to win it!
Lowest: 229 RESTART: January 16th, 2017

1st 3-month goal for 2017: Be at 248lbs by April 16th
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