Heavy armour would have exhausted the French at Agincourt, say scientists

From the Guardian

"Would the battle of Agincourt have turned out differently if the French had worn lighter armour? Perhaps, say researchers who have discovered that the heavy steel-plate armour worn by the French would have exhausted them before the fight with the English had even started..."

Nice video of people in suits of armour on a treadmill. The comments on the article are interesting.