THis might not be good for the article but I don't do any of that shit.
For real gaining strength is gaining strength no matter how you put it.
You stick with main lifts.
Squats, deads, lunges, stiff leg deads, 1 leg squats, rdl's...you do things that build up strength in your posterior chain (hams, GLUTES, back etc).
That's it for legs really.
Then upper body anything can be done.
Pull-ups, chin-ups, curls, extensions, bench presses, incline presses.
Then you put things into perspective to make that strength "useful". Don't take this term to another level please lol.
You add in plyo's or explosive movements to EXPRESS YOUR STRENGTH BETTER.
Jump squats, speed squats, db swings, various jumps, leaps bounds.
You do this to make yourself MORE EXPLOSIVE with the strength you have, so it transfers over well.
Finally upper body explosive work in my opinion isn't quite neccessary if your hitting pads/bag because that is a plyometric/explosive movement already.
To make all that new strength AND explosiveness from the EXPLOSIVE work transfer to kicks.
Well you have to practice enough kicks, knee's to make that transfer over to it.
For real that's all there is to it in my opinion.
Conditioning...run and SPAR (what better way to get condition for a fight then to actually fight?), and if you like to do some circuits crazy stuff..go for it..but I wouldn't go overboard with it. Perhaps once a week to mix things up and still get a good condition workout.
Because if your practicing kicks, punches, knees etc enough (on the pads etc) you won't need it.
For my fight I didn't do anything other than SPAR a lot, hit pads everyday, bag everyday.
And lift a few times a week to maintain strength for fight.