If I understand you correctly you are asking if crusades reduced (potential) manpower these countries had thus weakening them vis-a-vis other European countries, their potential rivals. If so then no, not to great extent. First crusade was more noble driven and royal power wasn't involved. That happened with later ones when the purpose was defending Jerusalem and attacks on Egypt.

Might not answer your question directly but for a good background about recruitment, financing and such I highly recommend God's War: A New History of the Crusades by Christopher Tyerman