David's pictures show you that human's body has no age.In his 43 he squats 617 pounds and his bench press is 440 pounds. He briefly describes his training technique.

My split looks like that:
Day 1
Legs; Chest

Day 3
Biceps; Triceps

Day 5
Back; Delts
Days 2,4,6 (7) - off

First week you take a weight you can complete only 10 reps. First set is warming up set. Second - you have to make 10 reps. Third set - make as much as you can. Take off 10-15% of weight and make as much reps as you can.

Second week. Choose a weight you can complete 8 reps. Work out in the same manner as at the first week.

Third week - the same weight but 9 reps in the first set.

Fourth week - increase the weight and make 7 reps in the first set.

Fifth week - the same weight as in the previous week but 8 reps, then increase the weight and make 6 and so on during 12 weeks.