Final answer:
Block periodization is a training approach that consists of 2-4 microcycles with increasing intensity, focusing on specific fitness attributes in each block.
Step-by-step explanation:
The type of periodization that includes 2-4 microcycles, where workouts are similar but increase in intensity from one to the next, is block periodization. In this approach, each block is highly focused on particular fitness and performance attributes, and intensity typically increases with each successive microcycle within the block. This pattern of physical exercise involves short periods of vigorous muscular work along with longer periods of medium and varied muscular work to promote adaptation and prevent plateauing.