title: A study of factors influencing relief of discomfort in breath-holding in normal subjects.
mesh_terms: D000328:Adult; D001049:Apnea; D002245:Carbon Dioxide / Q000032:analysis; D003964:Diaphragm / Q000502:physiology; D006801:Humans; D008297:Male; D010100:Oxygen / Q000032:analysis; D010313:Partial Pressure; D012119:Respiration; D012129:Respiratory Function Tests; D014797:Vital Capacity
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen