Tuesday, February 05, 2008
Weight, Body Fat and BMI
Since I am at the start of a new training plan, I figured I would baseline a few numbers (being the numbers person that I am).
Weight: 129 lbs
At the office gym, they have one of those machines that you hold in your hands and it determines your body fat and BMI. After doing just a little on-line research I found there is TONS of information on body fat and BMI - different methods of measuring and different guidelines for what is considered "normal." It is all very confusing.
The machine I used probably uses Bioelectrical Impedance to determine body fat - not the best method, but it is the one I have so....
% Body Fat: 24.6%
According to the American Council on Exercise, a fit adult woman would be between 21-24% body fat. Athletes 14-20%. Normal would be 25.31%. I would probably rate myself as fit but not athletic..so far so good.
According to the American Diabetes Association, Normal range for women is 15-25% body fat. Overweight would be 25.1-29.9%. Ok, squeaked into the normal category that time.
For age related measures, a woman age 40-59 years old should be 23-33% body fat. I am comfortably in that range, thank you very much.
I found another method for measuring body fat based on measuring my waist size, my hips, my wrist and forearm (along with height and weight). The result: 30% body fat (Sheesh, I don't like that number at all).
Now mind you, I do tend to sport a lovely "muffin top" with much of my wardrobe (covered discreetly by loose fitting blouses). A feature I would like to lose (and maybe someday run with just the running bra on)! Why does the situation seem to be worse on days when I am feeling especially "fat" (usually coinciding with the week before my...monthly friend)?
Ah well (sigh)! I have weighed 130-135 lbs ever since I got married over 17 years ago. I never look that heavy - folks guess me to be at least 10 lbs less. I feel pretty good where I am right now, but I think I could stand to lose about 5-8 lbs - so that is what I will go for, and in the meanwhile see where the other numbers end up.
Week 1, Day 2 10K Training:
3 miles, 32:09 (10:30 min/mi)
AHR: 161 bpm MHR: 183 bpm