[Physiological evaluation of vestibular training load].
Objective. To evaluate the effects of vestibular training by observing the variations of the physiological indices. It is helpful in grasping the training load, setting down and implementing the training plan. Method. 10 healthy subjects received linear acceleration, continuous Coriolis acceleration and discontinuous Coriolis acceleration stimuli on different dates. The stimulus was stopped when there were slight autonomic nervous symptoms, ECG, EGG and BP were recorded before during and after the stimuli. Computerized Dynamic Posturography (correction of Postrograph) (CDP) was tested before and after experiment. Result. One subject finished the training of the three stimuli with only slight autonomic nervous symptoms. The CDP tests pre- and post-experiment indicated that for most subjects the contribution of vestibular function in maintaining dynamic posture equilibrium increased after the linear acceleration stimuli, but decreased after continuous Coriolis acceleration stimuli, and there was great individual difference after discontinuous Coriolis acceleration stimuli because the stimulation was relatively heavy. The equilibrium score in SOT2 decreased significantly after linear acceleration stimuli, and increased significantly after discontinuous Coriolis acceleration stimuli. Conclusion. The training methods we designed and used in this experiment are feasible, and the required training load can be reached. EGG, BP and the percentage of LF (low frequency) in ECG R-R power spectrum can reflect the subject's condition when the period stimuli stopped. It provided important reference in the determination of training stimulation load.
Wang
L J
LJ
Institute of Space Medico-Engineering, Beijing, China.
Pei
J C
JC
Tong
B L
BL
Liu
Z Q
ZQ
D000054:Acceleration; D000293:Adolescent; D000328:Adult; D000337:Aerospace Medicine; D001341:Autonomic Nervous System / Q000502:physiology; D001794:Blood Pressure; D003312:Coriolis Force; D004562:Electrocardiography; D006801:Humans; D009041:Motion Sickness / Q000503:physiopathology / Q000517:prevention & control*; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology; D013026:Space Flight / Q000193:education; D013270:Stomach / Q000502:physiology; D014724:Vestibular Function Tests; D018544:Weightlessness Countermeasures