As for the power bands, I’ve had a lot of guys run with and without and I’d guess that they’re worth at least 0.05 over 100m. Adidas CLAIMS that they’re worth 2% performance improvement. If that were true (and I don’t believe it fully) that would be worth several tenths over 100m.
This would have been nice to know. I will try infant sized powerweb shorts w/ extra power bands along with my powersprints with a prerace meal of power bands coated in power drive then PR by .3