I think what kwantam meant by lower G-forces is that an experienced pilot can use abdominal/extremity muscles and a fancy flight suit to take around 9G before l

I think what kwantam meant by lower G-forces is that an experienced pilot can use abdominal/extremity muscles and a fancy flight suit to take around 9G before losing consciousness, but redout will hit at around -3G and there is not much you can do about it. A maneuver that you could easily do in normal flight becomes impossible to sustain if you are inverted, for example.