#$%^&*AU2011224072B220120503.pdf#####ABSTRACT A nasal respiratory device adapted to be secured at least partially over a subject's nose comprising: a nasal mask body configured to be secured at least partially over the subject's nose without covering the subject's mouth; an airflow resistor coupled to the nasal mask body and configured to increase the resistance to air exhaled through the device more than the resistance to air inhaled through the device; and a holdfast comprising one or more straps configured to secure the nasal mask body at least partially over the subject's nose. C: NRPonbli GHMatters MERCEDESA 2827486_ 1.DOCX 15/0911Sheet 1 of 23 1 F I I I FIG. Z