Cell phone based balance trainer.
Cell phone based balance trainer.
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DOI：
10.1186/1743-0003-9-10
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发表时间：
2012-02-08
影响因子：
5.1
通讯作者：
Sienko KH
中科院分区：
文献类型：
--
作者：
Lee BC;Kim J;Chen S;Sienko KH
在其目前基于实验室的形式中，现有的提供身体运动线索的振动触觉感觉增强技术由于其尺寸、重量、复杂性、校准程序、成本和脆弱性而对于基于家庭的康复使用是不切实际的。我们设计并开发了一种基于手机的振动触觉反馈系统，可用于临床和家庭环境中的平衡康复训练。它包括一个带有嵌入式三轴线性加速度计的iPhone，用于估计身体倾斜的定制软件，一个插入耳机插孔以提供身体倾斜的振动触觉提示的“触觉芽”配件，以及一个电池。5名年轻健康受试者（24 ± 2.8岁，3名女性和2名男性）和4名前庭缺陷受试者（42.25 ± 13.5岁，2名女性和2名男性）参加了一项概念验证研究，以评价该系统的有效性。健康受试者在Romberg、半串联Romberg和串联Romberg姿势期间闭上眼睛使用该系统。前庭功能障碍的受试者在半串联Romberg站姿期间在睁眼和闭眼条件下使用该系统。当受试者超过前后（A/P）或内外（M/L）身体倾斜阈值时，提供振动触觉反馈。受试者被指示远离振动。该系统能够提供实时的振动触觉提示，告知纠正姿势反应。当反馈可用时，健康受试者和前庭功能障碍者的A/P或M/L RMS摇摆显著减少（取决于反馈的方向），与摇摆轨迹匹配的椭圆面积显著较小，在无反馈区内花费的平均百分比时间显著更大，并且显示出显著更大的A/P或M/L平均功率频率。结果表明，该系统提供的实时反馈可以用来减少身体摇摆。它在成本、尺寸、重量、功能、灵活性和可访问性方面优于更复杂的实验室和商业平衡训练系统，使其成为进一步进行家庭平衡训练评估的良好候选者。
In their current laboratory-based form, existing vibrotactile sensory augmentation technologies that provide cues of body motion are impractical for home-based rehabilitation use due to their size, weight, complexity, calibration procedures, cost, and fragility. We have designed and developed a cell phone based vibrotactile feedback system for potential use in balance rehabilitation training in clinical and home environments. It comprises an iPhone with an embedded tri-axial linear accelerometer, custom software to estimate body tilt, a "tactor bud" accessory that plugs into the headphone jack to provide vibrotactile cues of body tilt, and a battery. Five young healthy subjects (24 ± 2.8 yrs, 3 females and 2 males) and four subjects with vestibular deficits (42.25 ± 13.5 yrs, 2 females and 2 males) participated in a proof-of-concept study to evaluate the effectiveness of the system. Healthy subjects used the system with eyes closed during Romberg, semi-tandem Romberg, and tandem Romberg stances. Subjects with vestibular deficits used the system with both eyes-open and eyes-closed conditions during semi-tandem Romberg stance. Vibrotactile feedback was provided when the subject exceeded either an anterior-posterior (A/P) or a medial-lateral (M/L) body tilt threshold. Subjects were instructed to move away from the vibration. The system was capable of providing real-time vibrotactile cues that informed corrective postural responses. When feedback was available, both healthy subjects and those with vestibular deficits significantly reduced their A/P or M/L RMS sway (depending on the direction of feedback), had significantly smaller elliptical area fits to their sway trajectory, spent a significantly greater mean percentage time within the no feedback zone, and showed a significantly greater A/P or M/L mean power frequency. The results suggest that the real-time feedback provided by this system can be used to reduce body sway. Its advantages over more complex laboratory-based and commercial balance training systems in terms of cost, size, weight, functionality, flexibility, and accessibility make it a good candidate for further home-based balance training evaluation.
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影响因子：
1.6
作者：
Morris, Margaret;Guilak, Farzin
通讯作者：
Guilak, Farzin
影响因子：
2.2
作者：
Lange, Belinda;Flynn, Sheryl;Rizzo, Albert Skip
通讯作者：
Rizzo, Albert Skip
影响因子：
1.4
作者：
Kentala, E;Vivas, J;Wall, C
通讯作者：
Wall, C
影响因子：
4.6
作者：
JOHANSSON, R;MAGNUSSON, M;FRANSSON, PA
通讯作者：
FRANSSON, PA
影响因子：
5.1
作者：
Huang H;Wolf SL;He J
通讯作者：
He J