Patent ID: 7556038

Claim:
A method of adjusting a breathing rate of a self-ventilating user, the method comprising: monitoring respiration of a self-ventilating user and determining a user breathing frequency of said self-ventilating user, wherein respiration comprises an inspiration portion and an expiration portion; setting a target breathing frequency at or below the user breathing frequency; providing breathing cues to the self-ventilating user to breathe at the target breathing frequency by supplying a high positive air pressure to said self-ventilating user during said inspiration portion and a low positive air pressure during said expiration portion in substantial synchronicity with respiration at the target breathing frequency; subsequent to providing breathing cues to the self-ventilating user to breathe at the target breathing frequency, determining an undated user breathing frequency of the self-ventilating user; comparing said updated user breathing frequency with the target breathing frequency; and increasing the target breathing frequency if the updated user breathing frequency of said self-ventilating user is greater than the target breathing frequency.