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# Weight loss - seconds per mile per pound (Read 975 times)

I think it is difficult to come up with a metric that specifically equates racing weight with running performance.  I found myself in your shoes a while ago and concluded that 6' 2 - 192 pounds was not a good way to run and have taken my weight down to the low 170s. Lo and behold.....I got faster.   However, I also went through a very good stretch of properly structured training that I think had more of an impact on my running speed so who knows the actual seconds / mile impact of the the weight loss.

In any event, less weight will make you faster (within healthy limits) so why not give it a try?

JML is on to something here because while weight loss will surely make you faster, it almost never happens in a vacuum.

Have you qualified for Boston? I want to interview you!

Message me!

www.miloandthecalf.com

DoppleBock

I am sure that I could do better (Race times) at the weight range I have trained for all PRs (200-205)

One issue I have is that I have not stayed in that range for long - Hit the range - run a goal race, get fatter.  If I had stayed in that range and raced more often in that range I believe my PRs would be better .... blah, blah, blah - I am sure everyone (At least most) thinks they underperformed their fitenss

But realistically - 200-2:05 pounds - I figure all I could eek out of my body

5k 17:00

10k 35:00

Marathon 2:42

At 43 soon 44, I am sure I am past those numbers

At 175 pounds I feel like I could still ecplipse them.

2013 Goals ~ Mar < 3:00, 5M < 29, 10k < 35

fellrnr

So if your VDOT = 49 (See table)

191 / 2.2 = 87KG

Lose 10KG = 77KG

87KG x 49 = 4263 MMO2

4263 / 77 = 55.4 VDOT

55.4 VDOT ~ 18:18 5k

So in theory if you changed nothing else and only reduced your weight, your maximum gain would be the above.  You will not change nothign else - Muscle content, aerobic fitness will change and your ability to transfer theoretical gain to actual will be less than 100%

I support this calculation in my VDOT Calculator - http://fellrnr.com/wiki/VDOT_Calculator - if you put in your current weight, it will give predicted performances based on weight changes.

Some notes http://fellrnr.com/wiki/Weight_Loss_and_Performance

fellrnr, you might want to specify on your calculator page that it's only good for certain paces--slow runners will get a "VDOT out of range" message.

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