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Treadmill shows medieval armour influenced battles

Medieval suits of armour were so exhausting to wear that they could have affected the outcomes of famous battles, a study suggests.

Scientists monitored volunteers fitted with 15th Century replica armour as they walked and ran on treadmills.

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With the help of a treadmill, the team was able to assess how much energy someone wearing armour would have used (Footage: University of Leeds)

They found that the subjects used high levels of energy, bore immense weight on their legs and suffered from restricted breathing.

The research is published in the Proceedings of the Royal Society B.

The effect of the heavy armour was so great, that the researchers believe it may have have had an impact on the Battle of Agincourt.

In this famous Anglo-French conflict of 1415, French knights were defeated by their English counterparts, despite the fact that they heavily outnumbered them.

The researchers say their study suggests that the armour-clad French, who had to trek through a muddy field to meet the stationary English line, were so slowed and exhausted by their march that they would have stood little chance.

Lead researcher Dr Graham Askew, from the University of Leeds, said: "You look at these suits of armour, and they weigh between 30 and 50kg, so it is a huge fraction of the wearer's body weight."

Running battle

In the 15th Century, as the arms race progressed with the development of new and powerful weapons such as the longbow and crossbow, armour too evolved.

In late Medieval Europe, these bulky battle suits were principally constructed from interlocking steel plates, covering the soldier from head to toe.

But with the added protection came extra weight and cumbersomeness - and while researchers have always realised that this would have impaired a soldier's performance, nobody until now has quantified by how much.

To study this, researchers asked four participants, who regularly re-enact battles for the Royal Armouries in Leeds, to don their exact-replica armour from England, Gothic Germany and Italy and get onto a treadmill.

By recording how much oxygen they took in and carbon dioxide they produced, the team was able to calculate how much energy they were using. High-speed cameras also helped the researchers to study how the volunteers were using their limbs.

Dr Askew, who carried out the research with colleagues from the University of Oxford and the University of Milan, said: "Our main finding was that it was extremely expensive in terms of the amount of energy used to move in the armour."

The team found that walking and running with the armour used up twice as much energy as doing the same thing without any armour.

The breast and back plates of the medieval armour also affected breathing: instead of being able to take long, deep breaths while they worked up a sweat, the volunteers were forced to take frequent, shallow breaths, and this too used up more energy.

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TAGGED: GENERAL INTEREST, HISTORY


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