Personally, I think it depends on the participants, and their ages. But hours. and hours and hours. Not all physical, mental work too. For big tournaments (eg. WKA World Championships) we start a training schedule eight weeks before, that gives a three day "break" before the day of leaving for the tournament. There's not only fighting practices, but cardio, sprints, endurance training and work on diet/water intake. I think we average around 7 hours of training a week, some of us push to eleven, but that adds the worry of burn out (**I'm seventeen, a lot of the team younger, some older**)
And yes, for smaller tournies its a lot less vigourous
take care
Aqua