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Just looking for opinions...LBM vs Fat Loss

1Cor1510
1Cor1510 Posts: 413 Member
in Social Groups
So I started 55 days ago. About 20 days in, I upped my protein, I try to hit 100g a day. I also started working out. My scale hasn't moved much so I ran the numbers and here they are:

I have been running on average a deficit of 750 cals a day per fitbit (which is what I've been shooting for.) I have lost 7.7 lbs which is below my goal of 6 lbs per month.

I have also been weighing and measuring, (food and myself :) and there has been a significant difference. I am down 10 inches overall and when I reran my BF calculations (fat2fit.com) it showed and increase in LBM of 4.3lbs, and a loss of BF of 12 lbs. This works out to the 7.7 lbs I have lost.

12 lbs was my goal for 2 months, and I suppose if I lost that in fat, then I'm right on the money. I'm just confused as to how I could have put on that much LBM in such a short period of time? Does this seem normal?

Replies

  • dorkus619
    dorkus619 Posts: 10
    I think that online BF calculators are pretty inaccurate unfortunately. From what I've heard, water displacement or calipers are the best ways to get a more accurate number, but I've never done either. An increase in 4.3 lbs of LBM seems impossible in 55 days. Not sure of the validity of the following source, but it seems reasonable: Women on average can gain .5-1 lb lean muscle per month http://www.aworkoutroutine.com/how-much-muscle-can-you-gain/
    Maybe water retention was messing with your numbers?

    I've also read that calculators to figure your BMR or RMR or how many calories you need per day and how much deficit etc aren't always too accurate either.
    If you lost 7.7 lbs in 55 days, that equates to a total deficit of 36950 calories (or a deficit of 490 per day). So your fitbit might not be giving you the perfect numbers either. Maybe just experimenting based on your own results is best?

    Hope that helps

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