Abstract
To which unpleasant factors, such as road surface vibration and maintenance of a taking-a-seat posture, always exist in a crew member during a run. A crew member's each part of a human body is influenced (increase of the stiffness of the shoulders and sleepiness, lumbago, etc.), and these unpleasant factors serve as a feeling of fatigue moreover. Considered that the amount of accumulation of a feeling of fatigue increases with progress of time, in this research, the experiment which checks change of the feeling of fatigue when carrying out posture maintenance for 5 consecutive (with no break) hours on the conditions which imitated the road surface input paying attention to the time of 5 hours required for the run between Tokyo and Osaka was conducted.
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