Proposal of Designed Fire Fighting Activity Model to Measure Fatigue Condition of Firefighters during Operation

A job site of firefighters is oppressive working conditions compared to the work environment, such as offices and production plants. The burden of activities under such a working environment leads to physical and mental fatigue of firefighters. A new designed fire fighting activity model was proposed to make clear the level of loads to the fire fighters’ cardiorespiratory function and the body in the operation under the following conditions. First is that data with good reproducibility showing the relationship between cardiopulmonary function and/or the vital signs and the degree of load can be obtained under stable conditions and second is that it is composed of the items with the adequate time in the data analysis in each activity. By comparing the time variation of eardrum temperature rise, the initial rise and maximum attained value of instantaneous heart rate during fire fighting operation in eight story training building, the applicability of the proposed model was verified.