Kennekuk Jack wrote:
Embrace the Humidity wrote:
Don't worry about 2-3 weeks at "altitude," embrace the humidity -- the poor man's altitude.
This. You can also create your own by wearing extra layers in the summer.
Several years ago I asked Peter Snell if training in hot and humid weather had similar physiological affects as training at altitude did. He said no, that there were two different physiological systems that came into play in each circumstance. I don't remember if we got into what systems they were or not.
That said, in 1968, Jack Bacheler kind of came out of nowhere to make the Olympic team in the 5,000 and went on to be the only US runner to make the 5,000 final though he got sick and didn't run in it. He didn't have loads of time spent training at altitude but obviously fared better racing there than most others did. Later, he said that he thought that training in Gainesville in the summer with really awful heat and humidity helped him deal with racing at altitude.
Personally, looking decades back, many of my best races came in the fall when I was living around DC and had trained through the summers there, which also were hot and very humid. When that weather finally broke it felt like I'd been injected with some sort of PED that made running much easier. On the other hand, I lived in Boulder for several months. I sort of thought I'd feel that same sort of boost when I went back to near sea level as I'd felt when DC's heat and humidity broke. It didn't happen.
So I think you're onto something. But I will say that running at high altitude with lower temperatures and humidity is much more pleasant than training in hot, humid, weather.