Mideast Runner wrote:
Umm. Your graph proves nothing. Look at your r^2 value. Way too low to say anything about the relationship. Absolutely no statistical significance.
Besides the fact that he did this in excel, it shows the average 180# person runs 2 seconds a mile faster than the average 260# person.
You are correct r^2 value is low. This means that not all 180# people run the same pace.
If this chart shows anything else, it suggest it would be higher that 2 seconds per mile because a lot of people that are 260# know they can't hit the time cut off.
I find it very hard to believe. I took two years off in my late twenties. At the time my 26 mile long runs were at about 6:20 pace and my marathons was about 2:20. After two years and no running I had gained 8# from 128# to 136#. I felt like dying after a 12 minute mile. I had planned to run 2 mi but had to walk the last half mile after running for 18 minutes. IF he really ran that, he was doing some serious cross training.
The chart is for the runner's pace over a marathon. If expect being fat to slow down your marathon pace way more than it slows down pace for a single mile.