对前庭训练负荷的生理学评价

目的 通过对前庭训练中各项生理指标变化观察检验前庭刺激是否适当,评价前庭训练在提高人体前庭功能适应性方面的作用,以便于在前庭训练中把握训练量,制定和实施训练计划,方法 对10名健康被试者,在不同日期分别进行了线性加速度刺激,连续的科氏加速度刺激和间断的科氏累积加速度刺激,刺激的终止指标以被试者感觉有轻度植物神经症状为准。在实验中对被试者在刺激前后前庭－植物神经反应,心电,血压,胃电以及动态姿态平衡等各项生理指标进行了测试,结果 10名被试者中有1人3项前庭刺激达到达标水平,他在实验中有轻度运动病症状,实验前后动态姿态平衡的测试表明,对于大多数被试者,线性加速度刺激后,前庭觉在维持身体平衡时作用增高;连续的科氏累积加速度刺激后前庭觉在维持身体平衡时作用下降;间断的累积加速度刺激训练,由于刺激相对较重,在动态刺激后的变化个体差异较大。线性加速度刺激后,感觉综合测试（SOT）第2项平衡分显著下降,间断科氏加速度刺激后,此项平衡分显著升高。结论 本实验所设计的前庭刺激训练方法是可行的,训练负荷是可以达到的,通过胃电,血压和心电R－R功谱低频谱百分比的变化可以反映被试者前庭刺激终止时的生理状态,为制定前庭训练刺激量提供重要参考。

Physiological Evaluation of Vestibular Araining bad

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.