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@Fishdick
Actually what kind of head injuries helmets prevent and to what extent?
Do they take speed of impact, shape of object hit etc. into account for the research purposes? Importantly: do they research only cases where head injuries where sustained while wearing/not wearing a helmet and severity of this injuries, or make bad statistics based on the wrong assumptions (i.e. broken collar bone, no head injuries - helmet saved the head, without noting whether the head took any impact at all and so on).
I know that I should read the papers myself, but surely there is someone who read it all before me and is able to explain it in few simple sentences. How it's done, what exactly it says, has it any scientific value to it?
One thing I had noticed a while ago. When i bang my head on the wall it hurts and there is an element of concussion. With helmeted head it hurts less but the concussion is still there. You can possibly even feel the difference just slapping your head with/without the helmet.
They obviously spread the impact over bigger surface making skull fractures less likely but I'm not that sure about concussion thing. I heard somewhere that the polystyrene lining in cycling helmets is too hard.
It was TSG Evolution helmet btw.
I stopped wearing it after it became uncomfortable (gone way too lose after couple of months) and provided more distraction then what it was worth.
One more thing. Does your hearing get affected by helmet or is it just me?