odelltrclan wrote:Jenn was quoted after the meet as saying she expected big things in this meet and one of the reasons she gave was because it was at altitude.
With all due respect to Ms. Suhr and her impressive WR, her "feeling" about what altitude will do isn't necessarily a reflection of the reality of what altitude will actually do.
You cannot definitively say altitude only helps fast athletes (by the way, Jenn is considered fast among women's PV's).
Of course I can definitively say that. Equations do not lie or stretch the truth, and aren't open to personal interpretation. Drag effects depend on the square of the velocity. So, someone running at 5m/s will experience much less drag than someone running at 10m/s. No ifs, ands, or buts.
I will once again try to explain what the situation is with aerodynamic drag. It basically depends on two things the athlete can't control -- wind and air density -- and one thing that changes during the jump -- their cross-sectional area to the direction of motion. The PVer will likely benefit most from assistance in the run-up phase, because that's where the cross-sectional area is the biggest. Any reduction in drag will be greatest here for that reason, and also that their velocity is elevated. That being said, however, there isn't enough time to significantly affect the run-up, enough that drag would have a big impact (they're not running fast enough for a long enough time to 'accrue' the benefits).
Once the pole is planted and they're rising, their cross-sectional area shrinks as they rotate to get into a vertical position. So, there is unlikely any big effect in this phase. The physical properties of the pole don't change with altitude, nor does it get longer to help them get higher, so the only thing that will matter is how much potential energy was put into it when it was planted (transferred from the run-up). And as I said, that's not going to be much different at sea level or altitude, especially if there is no wind.
If you wish, the gravitational field strength is smaller at altitude as well (this also changes with latitude, since the Earth isn't a perfect sphere). In Albuquerque, it's about 9.79 N/kg, compared to 9.795 N/kg in LA and 9.80 N/kg in Oslo. So, given the energy to rise 5m in the air in Oslo, you can get an extra couple millimetres in ABQ...
This must have been one of the most important meets of all time (so much so that many skipped the meet) for so many to have their all time bests in the last couple of days.
It was a national championship that had strong competition. As a track and field fan, you are surprised that one might see a wealth of personal bests at this calibre of a meet?