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Longbows were very difficult to master because the force required to deliver an arrow through the improving armour of medieval Europe was very high by modern standards. Although the draw weight of a typical English longbow is disputed, it was at least and possibly more than . Considerable practice was required to produce the swift and effective combat shooting required. Skeletons of longbow archers are recognisably affected, with enlarged left arms and often osteophytes on left wrists, left shoulders and right fingers.