PROBLEM TO BE SOLVED: To noninvasively obtain information required for generating a respiratory waveform of a subject over a long period of time and to measure/record it as needed.SOLUTION: A method for obtaining respiratory waveform information of a subject and a system for executing the method are provided. The method includes: a step of measuring, with time, an air pressure difference between an air pressure inside a housing chamber that houses a subject of which the physiological functions are to be measured over a long period of time and an air pressure on the outside and a step of generating respiratory waveform information of the subject on the basis of the measured air pressure difference. The housing chamber includes a suction unit for making a prescribed amount of air continuously flow from the outside of the housing chamber into the chamber, and an exhaust unit for making the prescribed amount of air continuously flow out from the inside of the housing chamber to the outside. After the subject has been housed, the inside and outside of the housing chamber are shut off except for the suction unit and the exhaust unit, and a resistor for adjusting the ventilation amount of the housing chamber is provided in at least one of a ventilation path in the suction unit and a ventilation path in the exhaust unit.COPYRIGHT: (C)2013,JPO&INPIT【課題】被験体の呼吸波形の生成に必要な情報を、長期間にわたって非侵襲的に取得し、必要に応じて測定/記録する。【解決手段】生理機能を測定されるべき被験体を長期間にわたって収容する収容室の内部の気圧と外部の気圧との気圧差を経時的に測定する工程;および測定された気圧差に基づいて被験体の呼吸波形情報を生成する工程を包含し、上記収容室には、該収容室の室外から室内へ所定量の空気を連続的に流入させる吸気部、および、該収容室の室内から室外へ所定量の空気を連続的に流出させる排気部が設けられており、上記収容室は、上記被験体が収容された後に、上記吸気部および上記排気部を除いて室内外が遮断されており、上記吸気部における換気路および上記排気部における換気路の少なくとも一方に、上記収容室の換気量を調整する抵抗が設けられている、被験体の呼吸波形情報を取得する方法、ならびに該方法を実行するシステムを提供する。【選択図】図1
