Here's the stats, I'm a 42 year old woman, who is just shy
of 5'5" and I weigh 139 lbs. After a lifetime of jogging,
last year I started running with a running group and racing.
My times have been steadily improving and last month I ran a
PR 5K of 22:49 at 6000' (where I live and train).
While I'm happy with my weight on a personal level, I'm
realizing that I'm _significantly_ heavier for my height
than most other women I race with. I've become passionate
enough about my running that I want to do what I can to
improve my race times, including adjusting my eating habits,
which on the whole are good but there's always room for
improvement.
We have a hydrostatic testing facility nearby and hearing
that it's the gold standard I went to get my body fat
tested. They concluded that I had 14.7% body fat and told me
that for a women in my 40's I should not be any lower than
that. Now I believe this result is wrong, I think I look
trim and fit but not 14% trim and fit! We have a very
accomplished coach who consults with our group and when I
told him the results of my test, he said he thought the
results were "unlikely" but since I wasn't obviously
overweight, putting on more muscle to power my current
weight would be more productive than trying to lose weight.
Could it be that perhaps I just have particularly dense
bones and so that threw off the hydrostatic results? Made it
appear that I had a lower percentage of body fat than I do?
While it's comforting to think about just living with the
weight I'm at, when I think about what it could mean to my
race times to be running at 129 lbs vs. 139 it's tempting to
see if I could get there. But I don't want to set myself up
for failure by trying to get to a weight that's too low for
me. On the other hand according to all the charts 129 is
_not_ on the low end for a woman my height. I know I weighed
less than that when I was in college but I think I had less
muscle then too. I also don't want to negatively impact my
race times by not giving my body enough fuel or losing
muscle. So I'm not sure what to do.
I know no one can really answer this question based on this
message, but thought I'd see if anyone had any thoughts.
Thanks!