Repetitive exposure to aftershocks significantly increased equilibrium dysfunction, as measured by total path length of the center of gravity under eyes closed conditions, compared to rare exposure.
Cross-Sectional (n=101)
Yes
Does repetitive exposure to aftershocks following a major earthquake cause equilibrium dysfunction and psychological stress in healthy individuals?
Repetitive exposure to aftershocks following a major earthquake is associated with subclinical equilibrium dysfunction, which is further exacerbated by state anxiety.
Absolute Event Rate: 599.9% vs 495.8%
p-value: p=0.003
Major earthquakes were followed by a large number of aftershocks and significant outbreaks of dizziness occurred over a large area. However it is unclear why major earthquake causes dizziness. We conducted an intergroup trial on equilibrium dysfunction and psychological states associated with equilibrium dysfunction in individuals exposed to repetitive aftershocks versus those who were rarely exposed. Greater equilibrium dysfunction was observed in the aftershock-exposed group under conditions without visual compensation. Equilibrium dysfunction in the aftershock-exposed group appears to have arisen from disturbance of the inner ear, as well as individual vulnerability to state anxiety enhanced by repetitive exposure to aftershocks. We indicate potential effects of autonomic stress on equilibrium function after major earthquake. Our findings may contribute to risk management of psychological and physical health after major earthquakes with aftershocks, and allow development of a new empirical approach to disaster care after such events.
Honma et al. (Fri,) conducted a cross-sectional in Equilibrium dysfunction (n=101). Repetitive exposure to aftershocks vs. Rarely exposed to aftershocks was evaluated on Total path length (TPL) of center of gravity under eyes closed condition (mm) (p=0.003). Repetitive exposure to aftershocks significantly increased equilibrium dysfunction, as measured by total path length of the center of gravity under eyes closed conditions, compared to rare exposure.