GSP RushFit program giving high BMR - this look right?

quinnzim

Hey all,

Just starting with the GSP RushFit program and one of the first steps is to calculate your BMR. I'm a 31 year old, 6;4", 200 lb. male. The calculation the nutrition guide provided with program gives for calculating my BMR is:

66 x (6.3 x weight in pounds) + (12.9 x height in inches) - (6.8 x your age in years) = _________. Once you have that number, times that by 1.4 (I do light / moderate exercise per week) to get your BMR. So, for me, it looks like this:

66 + 1260 + 980.4 - 210.8 = 2095.6

2095.6 x 1.4 = 2933.84 = MY BMR

However, that seems a bit high no? And using any of the online BMR calculators seems to suggest as much. For example:

MyFitnessPal BMR calculator = 1,964
BMI-Calculator.net = 2066.4
FitWatch.com = 2063

1000 calories is a big difference. Any ideas on this? Want to make sure I get this right before I start the program.

Thanks,
Q

yarwell

Once you have that number, times that by 1.4 (I do light / moderate exercise per week) to get your BMR.

It's gone wrong at that point. "that number" was your BMR, once you multiply by 1.4 you're calculating your TDEE.

Sounds like this "GSP Rushfit" is a POS

quinnzim

Haha, maybe they just do it that way to keep it simple for people? Obviously that didn't work... Thanks for the help though, that makes things a lot clearer.

yarwell

Haha, maybe they just do it that way to keep it simple for people?

Wrong is wrong, whatever the motivation :-)

Glad it helped.

njudi

Hi, the Mifflin St Jeor formula gives you approximately the same result as the BMR calculator in MFP:

For a male it's 10xweight in kg + 6.25xheight in cm + 5xage + 5 = 1966 in your case
that's the BMR, ie what you need for survival, ie your most basic functions, without weight loss

in order to get the Daily Calorie Requirements (DCR) you multiply this by a value according to your activity level. My table here says 1.375 for light exercises or 1.55 for moderate exercises - whatever applies.

hope this helps