Abstract
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. 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 avoidance maneuver. During the experiments, the physical motion, acceleration, and EMG(electromyography) signals were recorded. The posture control effect and the reflex time of each muscle differ from one region to the next. 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.
