부산대학교 도서관

Introduction: Up to one third of cadets may develop aviation motion sickness, which may affects the training efficiency and flight safety. There is doubts about the use of anti-motion sickness medication due to unacceptable side effects such as drowsiness. Aviation Physiology Research Laboratory (APRL) maneuver has been shown to speed up the pilot's recovery from spatial disorientation. This study investigated the effects of APRL maneuver on the symptoms and autonomic responses during motion sickness, in order to develop a non-pharmacological motion sickness prevention strategy. Methods: This is a cross-over design study. Motion sickness was induced in 42 healthy participants by Coriolis stimulation. The participants yell 5-8 times (APRL maneuver) during Coriolis stimulation in experimental trials, but keep quiet in the control trials. The symptom severity was assessed using the Motion Sickness Symptom Rating scale (MSSR). The d2 Test of Attention was conducted and cardiovascular responses were recorded before and after motion sickness. The heart rate variability were analyzed. Results: The APRL maneuver significantly reduced the MSSR score (p＜0.001), but did not significantly affect attention, heart rate or blood pressure. Conclusions: APRL maneuver was immediately effective in relieving motion sickness symptoms, possibly by inhibition of sympathetic excitation. APRL maneuver has the potential to be applied in flight training to improve the training efficiency and flight safety of pilots.