The same 1-3-5-8 principle is now applied to arpeggios of different qualities. Keep using the finger positions for the notes of each arpeggio and let the wrist bend while opening and closing the hand. Moving between different arpeggio shapes within one exercise teaches the hand to switch quickly between position patterns — the skill that later makes fast passages possible.
Use 1-3-5-8 finger positions for arpeggio notes, to train your wrist bend while opening and closing hand.