Just looking at this thread again, and noticed Jake's comments about sports.
In one of my other hobbies as a soccer afficionado, I have read that the playing of sports and games, particularly football (which, at the time, was more of a combination of soccer and rugby but with fewer rules, and was primarily played by peasants), was FROWNED upon in the middle ages and rennaissance.
From the website "Soccer 101":
But it was in England that football began to take the shape we now recognize. The games that are now known as Rugby and Association football began in England about halfway through the present century. The crude raw material of the game was found in the fields and streets, played among farm boys and apprentices. It started as a folk game and grew more and more with with time. It belonged to the people; in the eyes of authority and the well-bred, it was a vulgar, rowdy pastime, and from the fourteenth century onwards, the respectable and the Godly observed it with distaste, and made constant efforts to suppress it. It kept men from their Christian duties, occupations and it wasted time that might be used in the practice of archery and other military skills. The English king Edward banned the game because he feared his bowmen were spending too much time away from archery practice in preparation for war against France.
More at
Soccer 101
I have no knowledge of this being a popular sentiment among lords in other parts of Europe, but I find this interesting that sports and games were specifically NOT seen as proper training - despite the fact that these games were bloody and exhausting.