A study on occupant kinematics behaviour and muscle activities during pre-impact braking based on volunteer tests

Susumu Ejima*, Koshiro Ono, Sven Holcombe, Koji Kaneoka, Makoto Fukushima

*この研究の対応する著者

研究成果: Conference contribution

35 被引用数 (Scopus)

抄録

The objective of the current study is to analyze the influence of changes of the physical motion on human body under low-level impact accelerations. Five human volunteers in good health participated in the experiment under the supervision of an ethics committee. Each subject sat on a seat mounted on the sled that glided forward on the rails and simulated actual car motion when the passenger applied the emergency brake. Applied acceleration was around 1.0 g. During the experiments, the physical motion (measured by three-dimensional motion capturing system), acceleration, and EMG signals were recorded. In the relaxed case, muscle responses were observed to start activating at around 100ms after the impact, when the pelvis acceleration was at its peak value due to the interaction between the lumbar spine and the seat. Depending on the location within the body, the reflex time of each muscle is different. Furthermore, the head-neck-torso accelerations were strongly influenced by the muscle activities after impact. These results can contribute in clarifying the relationship between the physical motion and muscle forces with respect to the difference in activation level of muscles. This study was also design to establish an injury prediction approach to verify the influence of human body posture changes just before impact on the occupant injuries in a traffic accident.

本文言語English
ホスト出版物のタイトルInternational Research Council on the Biomechanics of Injury - 2007 International IRCOBI Conference on the Biomechanics of Injury, Proceedings
ページ31-45
ページ数15
出版ステータスPublished - 2007 12月 1
外部発表はい
イベント2007 International IRCOBI Conference on the Biomechanics of Injury - Maastricht, Netherlands
継続期間: 2007 9月 192007 9月 21

出版物シリーズ

名前International Research Council on the Biomechanics of Injury - 2007 International IRCOBI Conference on the Biomechanics of Injury, Proceedings

Conference

Conference2007 International IRCOBI Conference on the Biomechanics of Injury
国/地域Netherlands
CityMaastricht
Period07/9/1907/9/21

ASJC Scopus subject areas

  • 臨床生化学

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