Science of Weightloss - 50 lbs. in 2009
January 6, 2009 | Waterford, New York | Vetting explained
Determining your Caloric Maintenance Level is useful in calculating the daily caloric deficit needed to acheive your desired weighloss goal.
Using the approximation that 1pound = 3500 calories, we can determine the rate at which we will lose weight.
Determining Maintenance Level:
BMR
Men: BMR = 66 + (13.7 X wt in kg) + (5 X ht in cm) - (6.8 X age in years)
Men: BMR = 66 + (13.7 X 105.235) + (5 X 177.8) - (6.8 X 32)
Men: BMR = 66 + (1441.7195) + (889) - (217.6)
My BMR = 2179 (2179.1195)
The Harris-Benedict formula
To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:
1. If you are sedentary (little or no exercise) : Maintenance Level = BMR x 1.2
2. If you are lightly active (light exercise/sports 1-3 days/week) : Maintenance Level = BMR x 1.375
3. If you are moderatetely active (moderate exercise/sports 3-5 days/week) : Maintenance Level = BMR x 1.55
4. If you are very active (hard exercise/sports 6-7 days a week) : Maintenance Level = BMR x 1.725
5. If you are extra active (very hard exercise/sports & physical job or 2x training) : Maintenance Level = BMR x 1.9
I currently fit into category 3 (moderately active) which means I take 2179 and multiple by 1.55 which means my maintenance level = 3377
Playing it consevative, I use the category factor of 1.375 which would = 2996
This means that if I keep my daily caloric intake below 2996 that I
will lose weight. Keeping in mind that one (1) pound (lbs.) is equal
to approx 3500 calories we can determine the rate at which I will lose
weight based on how big my daily deficit is.
Example:
If I keep my caloric intake at 2496 (or a 500 calorie daily deficit
2996-500=2496), then I would lose 1 pound (average 75% fat, 25% lean
tissue) every seven (7) days. At this rate it would take me 350 days
to lose my goal to reach 185 lbs. Keep in mind this is true weight loss and
not the flucuations you can see from retaining water or losing water
weight, etc.
My goal is to set my daily caloric intake at 1496 (or a 1500 calorie deficit).
Using the math above, it will take me 2.33 days to lose 1 pound. At this rate it will take me 110 days
from today to achieve my goal. 110 days would place my approximately
around April 15th. Accounting for imperfection, I will set my offical
target date as May 1st.
May 1st, here I come!
Track my progress at: http://Lose50PoundsIn2009.info
- Tags:
- weightloss,
- science,
- health,
- diet,
- exercise
- Posted in Assignment:
- Weight-loss success
iReport welcomes a lively discussion, so comments on iReports are not pre-screened before they post. See the iReport community guidelines for details about content that is not welcome on iReport.
What is iReport?
-
Share
Tell a story, offer an opinion, say what's important to you.
-
Discuss
Join the conversation on the day's big issues.
-
Be heard
The best iReports get vetted and used on CNN platforms.
The label “Not vetted by CNN” lets you know that this story hasn’t been both checked and cleared by a CNN editor.
iReport stories that have a red "CNN iReport" stamp in the corner have been vetted and
cleared. That means they've been selected and approved by a CNN producer to use on CNN,
on air, or on any of CNN's platforms.







Comments