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首页> 外文期刊>Journal of neurology >Reduced postural differences between phobic postural vertigo patients and healthy subjects during a postural threat.
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Reduced postural differences between phobic postural vertigo patients and healthy subjects during a postural threat.

机译：在姿势威胁期间，减少恐惧姿势性眩晕患者和健康受试者之间的姿势差异。

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Phobic postural vertigo is characterized by subjective imbalance and dizziness while standing or walking, despite normal values for clinical balance tests. Patients with phobic postural vertigo exhibit an increased high-frequency sway in posturographic tests. Their postural sway, however, becomes similar to the sway of healthy subjects during difficult balance tasks. Posturographic recordings of 30 s of quiet stance was compared to recordings of 30 s of quiet stance during a postural threat, which consisted of the knowledge of forthcoming vibratory calf muscle stimulation, in 37 consecutive patients with phobic postural vertigo and 24 healthy subjects. During quiet stance without the threat of forthcoming vibratory stimulation, patients with phobic postural vertigo exhibited a postural sway containing significantly more high-frequency sway than the healthy subjects. During the quiet stance with forthcoming vibratory stimulation, i.e., anticipation of a postural threat, the significant differences between groups disappeared for all variables except sagittal high-frequency sway. During postural threat, healthy subjects seemed to adopt a postural strategy that was similar to that exhibited by phobic postural vertigo patients. The lack of additional effects facing a postural threat among phobic postural vertigo patients may be due to an already maximized postural adaptation. Deviant postural reactions among patients with phobic postural vertigo may be considered as an avoidant postural response due to a constant fear of losing postural control.
机译：尽管临床平衡测试的正常值，但恐惧姿势性眩晕的特征是站立或行走时主观失衡和头晕。恐惧姿势性眩晕患者在姿势检查中表现出较高的高频摇摆。然而，在困难的平衡任务中，他们的姿势摇摆与健康受试者的摇摆类似。在连续37例患有恐惧性姿势性眩晕的患者和24名健康受试者中，比较了体位描记的30 s静姿势记录与姿势威胁期间30 s静静姿势的记录，其中包括即将到来的小腿肌肉刺激。在安静的姿势下，没有即将出现的振动刺激的威胁，患有恐惧性姿势性眩晕的病人表现出的姿势摇摆比健康受试者明显包含更多的高频摇摆。在安静的姿势和即将来临的振动刺激下，即，预期姿势威胁，除了矢状高频摇摆之外，所有变量的组之间的显着差异都消失了。在姿势威胁期间，健康受试者似乎采取的姿势策略与恐惧姿势性眩晕患者表现出的姿势策略相似。恐惧姿势性眩晕患者在面对姿势威胁时没有其他影响，可能是由于姿势适应性已经最大化。恐惧的姿势性眩晕患者之间的异常姿势反应可被视为避免的姿势反应，原因是不断害怕失去姿势控制。

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