The Relationship for Target and Tracking of the Body Tracking Test(BTT)
The Relationship for Target and Tracking of the Body Tracking Test(BTT)
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身体跟踪测试（BTT）的目标与跟踪的关系
DOI：
10.3757/jser.55.343
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发表时间：
1996
影响因子：
--
通讯作者：
Juichiro Takeuchi
中科院分区：
文献类型：
--
作者：
Tomoe Yoshida;M. Oda;Hirofumi Takahashi;S. Sasaki;Masahiko Yamamoto;Juichiro Takeuchi
为了评估动态姿势控制，开发了身体跟踪测试（BTT）。本文对目标增益和跟踪增益进行了研究。站在稳定计上的受试者被要求跟踪一个移动的光学目标，该目标通过他/她的身体运动显示在屏幕上。然后记录稳定性数据并进行计算机分析。目标的水平或垂直跨度为15cm。以水平或垂直方式移动的光学目标。光靶运动采用可控三角波编程，光靶速度约为0.1 Hz。采样时间为50毫秒，共60秒。受试者双脚并拢直立站在稳定计上，显示器与眼睛平齐。在这个系统下对健康的年轻成年志愿者进行了检查。共纳入87例受试者，其中男49例，女38例。平均年龄27.6岁（21 ~ 37岁）。我们建立了7个尺度来确定目标和跟踪的增益。量表1为1.4，量表2为1.6，量表3为1.8，量表4为2.0，量表5为2.2，量表6为2.4，量表7为2.6。身体运动的总距离根据体重来调整。为了比较各量表的结果，将身体运动的总距离除以目标运动的总距离。这个比率被称为“BTT运动指数”。在水平身体跟踪测试中，最小指数为量表3，获得1.8被认为是跟踪的最佳分数。在垂直身体跟踪测试中，最小指数为量表2,1.6的增益被认为是跟踪的最佳分数。
To evaluate dynamic postural control, the Body Tracking Test (BTT) was developed. This paper investigated gain for both the target and tracking. The subject standing on the stabilometer was asked to track a moving optical target that was displayed on a screen by his/ her bodily movement. Then, stabilometric data was recorded and computer-analyzed. The horizontal or vertical span of the target was 15cm. An optical target moved in a horizontal or vertical manner. The movement of the optical target was programmed by controlled triangular waves and the optical target speed was approximately 0.1 Hz. The sampling time was 50 mseconds for a total of 60 seconds. The subject stood erect on the stabilometer with feet together and the display screen was placed at eye level.Healthy young adult volunteers were examined under this system. Overall, there were 87 subjects, (male 49, female 38). Mean age was 27.6 (21-37 years). We established 7 scales to determine the gain for target and tracking. Scale 1 is 1.4, Scale 2 is 1.6, Scale 3 is 1.8, Scale 4 is 2.0, Scale 5 is 2.2, Scale 6 is 2.4, Scale 7 is 2.6.Total distance of the bodily movements was adjusted by body weight. To compare the result of each scale, the total distance of bodily movements was divided by total target movement. This ratio was called the "Index of BTT movement". In the horizontal body tracking test, the minimal index was Scale 3, and a gain of 1.8 was thought to be the best score for tracking. In the vertical body tracking test, the minimal index was Scale 2, and a gain of 1.6 was thought to be the best score for tracking.