The average male will usually have a 45 lb bow, while historically they could get up to 150+ lb (similar to the English longbow). This form of kyudo is mostly derived from ceremonial styles and is very different from military training. Check out "old kyudo movie" for something more similar to what the samurai likely performed.
A typical draw is 30-50 lbs. It is low because the draw is held for a very long time. Japanese archery for military purposes was usually done either on horseback or in a battalion, but by the warring states period flintlock rifles were already being used so archery was increasingly for sport or ceremony instead of warfare. Many of the famous Japanese warlords did archery in the mornings as kind of a warm up. One interesting thing is the katana actually was also for mounted cavalry to use as their backup weapon, that's why it's so small and curved. The reason kyudo and kendo look like they do today has a lot of historical reasons and it's only a distance relative of the military techniques of the early samurai.
