Supplemental Digital Content is Available in the Text. Background and Purpose: Few tools are currently available to quantify gaze stability retraining exercises. This project examined the utility of a head-worn inertial measurement unit (IMU) to quantify head movement frequency, velocity, and amplitude during gaze stability exercises. Methods: Twenty-eight individuals with multiple sclerosis and complaints of dizziness or a history of falls were randomly assigned to either a strength and aerobic exercise (SAE) or gaze and postural stability (GPS) group. During a 6-week intervention, participants wore a head-mounted IMU 3 times (early, middle, and late). For aim 1, the frequency, mean peak velocity, and mean peak amplitude of head turns during equivalent duration components of group-specific exercises were compared using general linear models. For aim 2, the progression of treatment in the GPS group was examined using general linear regression models for each outcome. Results: Aim 1 revealed the GPS group demonstrated significantly greater velocity and amplitude head turns during treatment than the SAE group. The frequency of head turns did not significantly differ between the 2 groups. The aim 2 analyses demonstrated that the yaw and pitch frequency of head turns significantly increased during gaze stability exercises over the 6-week intervention. Velocity and amplitude of head turns during yaw and pitch gaze stability exercises did not significantly change. Discussion and Conclusions: A head-worn IMU during rehabilitation distinguished between groups. Furthermore, within the GPS group, the IMU quantified the progression of the frequency of head movements during gaze stability exercises over time. Video Abstract available for more insights from the authors (see the Video, Supplemental Digital Content 1, available at: http://links.lww.com/JNPT/A320).

中文翻译：

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转向监测凝视稳定性练习

补充数字内容在文本中可用。背景和目的：目前很少有工具可用于量化凝视稳定性再训练练习。该项目检查了头戴式惯性测量单元 (IMU) 在凝视稳定性练习中量化头部运动频率、速度和幅度的效用。方法：将 28 名患有多发性硬化症并主诉头晕或有跌倒史的人随机分配到力量和有氧运动 (SAE) 或凝视和姿势稳定性 (GPS) 组。在为期 6 周的干预期间，参与者佩戴头戴式 IMU 3 次（早、中、晚）。对于目标 1，使用一般线性模型比较特定组练习的等效持续时间组件期间头部转动的频率、平均峰值速度和平均峰值幅度。对于目标 2，对每个结果使用一般线性回归模型检查 GPS 组的治疗进展。结果：目标 1 显示，与 SAE 组相比，GPS 组在治疗期间表现出明显更大的头部转动速度和幅度。两组之间转动头部的频率没有显着差异。目的 2 分析表明，在 6 周的干预期间，在凝视稳定性练习期间，头部转动的偏航和俯仰频率显着增加。偏航和俯仰凝视稳定性练习期间头部转动的速度和幅度没有显着变化。讨论和结论：康复期间的头戴式 IMU 可区分各组。此外，在 GPS 组内，IMU 量化了凝视稳定性练习期间头部运动频率随时间的进展。视频摘要可提供作者的更多见解（参见视频，补充数字内容 1，可在：http://links.lww.com/JNPT/A320 获得）。