A device and method coupled to a therapy garment (30) to apply pressure and repetitive compression forces to a body of a person (60) has a positive air pulse generator (11) and a user programmable time, frequency and pressure controller (106) operable to regulate the duration of operation, frequency of the air pulses and a selected air pressure applied to the body of a person (60). The air pulse generator (11) has rigid displacers (152,153) that are angularly moved with crank power transmissions (189,212) to draw air into the air pulse generator (11) and discharge air pressure pulses to the therapy garment (30).
