Generally what I would believe is that zombies would have an initial infection period where they could have full running ability, however the biological system of a zombie is shut down for the most part except for basic brain and muscle function. Due to this the zombie may only have the ability to run for a short time until being reduced to a slow stagger due to muscle tearing. Remember zombies are necrotic. They are eroding.
As an unexpected result of this I’d guess that the zombies would infect a large group of people at first which would infect more people and then even more. So it would be terribly difficult not to be killed within the first 96 hours of the outbreak (assuming that it happened near you) due to the high functioning ability during those key moments.
If you’re still alive by the time the zombies damage their muscle to a point where the can only do a slow stagger toward you you’re out of extreme danger. But keep your guard up, there still are hordes of undead just waiting to feast on you!
This is exactly why I learned basic parkour. I’d rather know that the wall I’m backed up at with zombies all around is climbable. That the pipe leading to the roof is like a ladder. You gotta know how to escape just as much as how to fight.
There have been many that thought they could. If they have the ability to run which takes muscular work, there shouldn’t be a reason that they can’t climb. Things have been known to do anything for food. Look at this example. It climbed something impossible to get it’s food. In a seriousness, yes, they could climb if they were hungry enough. http://www.pictures-of-cats.org/images/cat-climbing-wall.jpg
If were talking ladders than of course. Espically if they see something that catches their attention at the top. I’m asumeing anything a human can climb a zombie would be able to also do so just with alot more difficulty. We have to take in the fact their stronger than people also. Not having any pain receptors goes along way when your holding onto something.
I have the idea that once someone turns they have the potential to be a running zombie due to he fact that their body hasn’t succumbed to decomposition. So as time passes the infected losses its ability to run fast and strength depletes becoming the traditional stumbling zombie. If that makes since. Also zombies would not feel pain so their strength would be elevated more than the average person, but i believe they would lack to coordination to use it affectedly. The infected would have a slightly increase strength and speed from what they had when they were human, they wouldn’t be some sort of super zombie.
does not really matter because in real life you could trip, close line, or impale them on trees lets face it there dumb the movies cant show that because it would be boring plus the actors aren’t going to hurt them selves. Fast or slow put a chair in front of them 40/60 chance gravity is doing the job for you.