Sprint experts explain to me why they only ran 10.07 100m w a tailwind sat NCAAs

Cold. TAMU track is also fraudulent.

They ran 19.84 in the 200!

Yeah doesn't make sense to me.

It was around 60 degrees. That was a big factor.

That’s freezing for a 100. The real question is why the 200 was fast

If it was slow because it was cold, that makes some of those GST sprint performances even more impressive because Philly GST was similarly cold.

By running for a longer duration they raised their core temperature higher, allowing superior relative performance.

/s

The sprinters at NCAA ran: 100/200/4x100 on the same day, minutes apart. GST ran one race one day and another the next day. Warming up, racing, cooling down, warming up, racing, cooling down.... wear on the body and performance.

Then Hill should enter US Nationals.

They also say humidity is good right? I looked early on in the meet and it was 45% humidity in Oregon. I recall Philly was ten degrees warmer with 65ish% humidity:

Also, the semis are less pressure and the best athletes can have a bit of relaxation which actually produces a better result. In the final, with everything on the line, a sprinter who “tries harder” usually runs slower. the pressure of the final can have this effect. and in the 200, what was the wind on the curve. they don’t measure that wind. a big curve tailwind and a legal home stretch can produce great results.

But 100m sprinters usually run faster in the final. Why would this one be different?

Earlier guy explained the fact that the athletes in the 100 final were mostly in the 4 x 1 an hour earlier. Anthony got a slow start and did just enough to win out if lane 9 with the least chance of a tailwind protected by the stadium. The 200, the 6th race in 3 days for some of the finalists, had a nice push on the turn. Some athletes are just better at 200 than 100 also but 6 races can also have a neg effect but overall, the race was relatively fast for ncaa final with 3 under 20. The 200 was critical setup for points at that time as well since none of the leading g teams had 5k runners and Auburn was without 4 x 4. So, motivation factor kicks in for a strong 200 race.

Relative humidity per se is irrelevant regardless of what some people remember incompletely about the effects.

Starting at the basics, it is the mass of air that you have to push aside that matters which is why the lower density of air at altitude makes sprint speeds faster at altitude.

Air is composed mainly of Nitrogen N2, molecular weight 14, and Oxygen mw 16. But also a bit of CO2, mw 28, and water, H2O, mw 10. So if you add water mw 10 air, mw ~15, you lower the density of air (for a given air pressure). So you might think that a relative humidity of 99.9 percent at a temperature of 50 would have a big effect, but it doesn't because the amount of moisture that the air can hold increases rapidly with temperature. That's because the dew point temperature is 50. If you keep the moisture in the air constant but raise the temperature to 86 degrees the Relative Humidity has fallen below 30 percent. Now if the Relative Humidity is 99.9 percent, there is almost four times as much water in the air and so the density of the air is lower - you have been replacing air with lighter water moisture.

Note however that the change in air density is quite small. At 86 degrees and 100 percent Humidity there are 27 grams of moisture in a kilogram of dry air while at 25 percent Humidity there are 7grams, the difference is 20 grams or two per cent and you have replaced mw 15 with mw 10 so it's one third lighter. So the change in air density is a little less than two-thirds of a percent. This is larger than having 30 percent Relative Humidity at 50 degrees where the change in air density reduces the moisture by about 4 grams, 0.4%, times one third or barely above 0.1% difference in air density.

This is long but should help you understand humidity better. Also note that relative humidity is usually not very useful, it is the dew point that matters. And over a day the dew point is quite stable while every one degree increase in temperature changes the Relative Humidity by about three percent so it is easy to have the Relative Humidity at 90 percent at dawn 60 degrees and drop to 40 percent at 86 degrees (note in Celsius these temperatures are 10 and 30 degrees).

hinchliffe went pro.

maybe the mild weather didn't help, although i liked 50-60 but 40s was where i'd lose a couple tenths, and it wasn't that cold.

This could have been an interesting thread.

With the exception of the poster who mentioned the cooler temps, the responses are pretty much all BS. Guess that's what happens when a message board on a primarily distance focused site attempts to discuss sprinting. Where is Sprintgeezer when we need him?

Anyone out there have any real input?

They? Only one person ran 10.07. Is Jordan Anthony non binary?

relative humidity, as someone who grew up in the south, humid feels warmer. dry and 70 there you feel a chill in the breeze; humid and 70 feels warm.