this is a somewhat odd question...
I do not understand why a gifted person would walk faster than anyone. I am 9 months pregnant, huge, short of breath...I walk very slowly these days, LOL. Dosn't have to do anything with what my brain does. Walking fast or slow is just a physical habit or necessity.
Do they talk faster? I have known gifted people who talk incredibly fast, as if their mouth were trying to keep up with their brain. I have known a HG+ colleague who was such a perfectionist that he was unable to answer even the simplest question right away without taking a break to think about it, then come out with an answer that resembled the abstract of a PhD thesis, delivered in such measures tones you might have wanted to take notes. People respected him for his incredible analytic skills and wealth of knowledge but got very impatient sometimes - after all we were working in government where it is often more important (sad but true) to give a good-enough answer fast.
So it can influence your speech either way - but with most people I'd say it does not influence their speed in talking, rather the depth of their discourse.
Are gifted people able to draw conclusions better?
If it's a problem to be solved with logical/analytical skills...well that's basically the definition of giftedness. If you need a solid foundation of knowledge in the field - it's easier to acquire and use it if you are gifted. If it's not your field? There is lots of science and engineering subjects I know zilch about, and my "conclusions" based on my science knowledge might be total rubbish. If it's a field in which my talents come to play? I can draw conclusions intuitively, without having studied the subject at hand, and they will usually be right.
Doesn't stop me from having made very bad mistakes in my life.
Remember, this is a forum that focuses on intellectual giftedness as defined by scoring in the highest percentiles of a standardized IQ test. It influences your life wherever thinking is involved. Doesn't mean you always get things right.
As Dumbledore said (an arrogant giftie if ever there was one...): "...my mistakes are correspondingly huger". ;)