I found this on the wikkii:
http://cs.elderscrolls.com/constwiki/index.php/Fatigue_Game_Settings
According to it, I need to modify this variable fFatigueReturnBase to slow down or stall fatigue, regeneration. The problem is I don't know where that variable is, is not in the list of global vars, and if I declare it on my script and set it to a fixed amount, I get no results..
Thanks.
Edit: I found the variable under the; Game, Settings, menu in the CS. However, modifying its value here would change the fatigue regeneration permanently, for all chars. I want to switch it on and off (through a script) at will.