title: Cardiorespiratory responses to graded positive-pressure breath holding. I.
mesh_terms: D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D002245:Carbon Dioxide / Q000096:biosynthesis; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D010101:Oxygen Consumption; D011175:Positive-Pressure Respiration; D012119:Respiration
chemical_list: D002245:Carbon Dioxide