I've often thought about this, in regards to mates playing training and still doing shitty bodybuilding splits and whinging when they dont get anywhere.
I havent dont anything like this personally, or have mixed playing football and weight training past my teenage years. But this is what i would try if i started playing again based on what i enjoy doing in the gym.
Try this out and see how it affects your training, it shouldnt effect your carryover to training and game day apart from a little residual soreness on training days.
If you still want to do your full body workouts just alter the goal and intensity of each workout. Just make sure the exercises you are doing carry over to the game (No lateral raise's, tricep kick backs or preacher curls)
On mondays train heavy 3-5 reps for 3 working sets on squats, bench, deadlifts. When you feel comfortable with the workload throw in 1 or 2 sets of 10 after your work sets to increase the total volume and ability for hypertrophy.
On wednesday train clean and jerk heavy (3-5 reps for 3+ sets) and throw in some moderate assistance/hypertrophy work of basic compound movements (chinups, pushups, dips, dumbell chest press, barbell curls if you so see fit. 10+ rep range).
On friday train for active recovery and speed. Same as monday but using a weight you can accelerate explosively for 5 reps or explosive variations of the movements from monday (jump squats, powercleans, bench throws, kipping chins (lol) going nowhere near failure. The weights used are light, you should become cardiovascularly fatigued before your muscles do.
So think of it as weight training twice a week with a really light ballistic/speed session on friday.
