In case of Tsunami, vulnerable people must shelter from it by themselves under difficult conditions. Other people's help is essential for them to evacuate as fast as possible. Considering transportation methods is one of the most important issues against a disaster. The purpose of this study is to compare transportation velocity and to obtain fundamental data, evacuation supporter carry vulnerable people by using transportation instruments. The authors carried out running experiments with three kinds of instruments, (A) a rollator, (B) a transport chair, and (C) a wheelchair. A rollator was installed assistant equipment (Patent No. 5802342) in this experiment because it did not have transportation function fundamentally. The experiments proceeded in three different inclination lanes; steep slope inclination average was 12.99%, gentle slope 6.77%, and flat 0%. Each lane's distance was as follows; steep slope was 100m, gentle 200m and flat 1, 000m respectively. The subjects of this experiment were 31 female students, the age group between 18 and 26. The authors did pre-questionnaire on individual attribute and ex facto questionnaire on physical burden to the role of evacuation supporters. Every vulnerable people's weight was adjusted to 62.04kg with dumbbells. Every subject watched the video of the Tsunami to image the situation and do practical experiment before the trials. Each trial was video-recorded to measure transportation velocity and observe their movement. Average velocity of (C) a wheelchair was 0.91m/s, (B) a transport chair 0.85m/s, and (A) a rollator 0.77m/s in steep slope, (C) 1.28m/s, (B) 1.14m/s and (A) 0.91m/s in gentle slope, (C) 1.87m/s, (B) 1.58m/s and (A) 1.18m/s. In the order of transportation velocity was a wheelchair, a transport chair and a rollator in every inclination.  According to questionnaire, the subject with experience taking part in sports before made a better record than whom without such experiences. Physical burden in gentle slope and flat with a wheelchair was least but then a rollator was added loads. There were few differences in three instruments in steep slope. Especially a rollator had big physical burden within three of them and difficulty to handle. However, as a result of this experiment, rollator's average velocity was faster than that elderly people walk with a rollator under own power. Therefore, evidently having help from evacuation supporters more efficient than pushing it by themselves for elderly usually uses a rollator. Finally, the study presented here clearly demonstrated that making use of transportation instruments such as a wheelchair, a transport chair and a rollator with evacuation supporter's help enable vulnerable people to run away from Tsunami swiftly. The authors propose that vulnerable people should deploy transportation instruments against a disaster.


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  • Accession Number: 01605341
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jun 30 2016 3:01PM