Heuschmann PU, Berger K, Misselwitz B, et al., for the German Stroke Registers Study Group and for the Competence Net Stroke. Frequency of thrombolytic therapy in patients with acute ischemic stroke and the risk of in-hospital mortality. The German Stroke Registers Study Group.
In this split, the whole body is worked over a period of four days: Day 1 - Chest/Back. Day 2 - Thighs/Hamstrings. Day 3 - Shoulders/Calves. Day 4 - Biceps/Triceps/Abs. Training Notes. Because this workout splits the body over four days, you can do more sets for each muscle group.
All that being said, beginners will get their best results training each muscle group three times per week. Three full body workouts is a standard that has stood the test of time. It always works. But it only lasts so long. When you advance beyond your first year or two you can and should split the workouts up into upper body and lower body days. Intermediates get great results training each muscle group twice per week. That schedule will take you through your next few years of training. And truthfully, you might want to stick with that forever.