In the aerobatic movie at
http://www.fulldeflection.com , Svetlana
Kapanina seems to hardly notice the g-forces.
I guess sometimes its +9 and -4 or so, but I can only see her hair go
up and down.
I have watched this film many times (ahh Svetlana !).
Maybe its due to the big seat belts.
Superdoof.