wind effects

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16 years ago 10/18/2007 7:32am EDT

what do you all think of wind effects on runners of different weights

Take a lightweight 1500 meter runner with a say 2.5 meter/sec wind rating, now to me that wind would have less effect on a runner weighing 10 or 1( pounds more, because

the wind would have less effect on a bowling ball than it would on a leaf or a sheet of paper.

Now you're going to say it evens out when the wind is behind you, but does it can you increase your heart rate to compensate for the extra stride length/frequency needed, it's not like a car rolling down hill in neutral is it, you still have to turn your legs over.

Any thoughts?

16 years ago 10/18/2007 8:01am EDT

re: vandergraafgenerator

Look up the work of Jesus Dapena and Nicholas Linthorne on this subject.

16 years ago 10/18/2007 10:36am EDT

re: vandergraafgenerator

Yes, bigger runners of similar ability to smaller runners have an aerodynamic advantage. Smaller runners dissipate heat better.

So on a cool windy day, the big guy should win. On a hot calm day, the smaller guy should win.

16 years ago 10/18/2007 10:49am EDT

re: vandergraafgenerator

vandergraafgenerator wrote:
what do you all think of wind effects on runners of different weights
Take a lightweight 1500 meter runner with a say 2.5 meter/sec wind rating, now to me that wind would have less effect on a runner weighing 10 or 1( pounds more, because
the wind would have less effect on a bowling ball than it would on a leaf or a sheet of paper.
Now you're going to say it evens out when the wind is behind you, but does it can you increase your heart rate to compensate for the extra stride length/frequency needed, it's not like a car rolling down hill in neutral is it, you still have to turn your legs over.
Any thoughts?

wouldn't the wind have more effect on a piece of paper than on a bowling ball because of density? So then why would it have more effect on a smaller runner? They're not less dense than a bigger runner

16 years ago 10/18/2007 10:56am EDT

re: cmurph

I can see this thread getting blown off course very easily.

16 years ago 10/18/2007 11:19am EDT

re: cmurph

well no; i was think more on the lines of inertia.

If you toss a bowling ball into a moderate wind the wind has very little effect on it, if you toss a feather of the same form into the same wind it probably goes backwards .

16 years ago 10/18/2007 2:00pm EDT

re: cmurph

Think surface cross section (wind resistance) versus volume. The volume goes up with the cube of the linear dimension, the surface area goes up with the the square. Thus, the relative impact of wind resistance is great on the smaller runner with the same relative body dimensions (the paper example brings in a vast difference in shape in addition to the differences in both density and weight). On the bike, the small guys climb better and the big guys are better on the flats, especially in the wind for essentially the same reason (even though there is the fixed weight of the bike which is relatively more of a burden on the small guy when climbing but not on the flat).

cmurph wrote:
vandergraafgenerator wrote:
what do you all think of wind effects on runners of different weights
Take a lightweight 1500 meter runner with a say 2.5 meter/sec wind rating, now to me that wind would have less effect on a runner weighing 10 or 1( pounds more, because
the wind would have less effect on a bowling ball than it would on a leaf or a sheet of paper.
Now you're going to say it evens out when the wind is behind you, but does it can you increase your heart rate to compensate for the extra stride length/frequency needed, it's not like a car rolling down hill in neutral is it, you still have to turn your legs over.
Any thoughts?
wouldn't the wind have more effect on a piece of paper than on a bowling ball because of density? So then why would it have more effect on a smaller runner? They're not less dense than a bigger runner

16 years ago 10/18/2007 4:06pm EDT

re: 26mi235

Trust me on this one the plane will not take off.

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wind effects

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