Cant say much about Ancient arms and armor.
But while at Warwick castle once, I was allowed to lift a Bastard sword from around the mid 1430's I think. I can tell you, that was damned heavy (mind you I was only sicteen last time I was home). Then I tried to put on a Great helm, with just a small slit for the eyes, Christ my head nearky went through my shoulders. So I'm supposing that (even if their armour was lighter) Hoplites would of had to have been damned strong, and that their armour was pretty heavy.