Development of measurement system for task oriented step tracking using laser range finder.
Development of measurement system for task oriented step tracking using laser range finder.
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DOI：
10.1186/1743-0003-10-47
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发表时间：
2013-05-22
影响因子：
5.1
通讯作者：
Takahashi M
中科院分区：
文献类型：
--
作者：
Matsumura T;Moriguchi T;Yamada M;Uemura K;Nishiguchi S;Aoyama T;Takahashi M
避免跌倒需要快速和适当的步伐反应，步伐速度作为跌倒风险指标仅在老年人中进行过评估。我们开发了一种新的测量系统，应用激光测距仪来评估步进性能的时间和空间参数，如步进速度，长度和精度。该测量系统比现有的测量系统具有更高的便携性，更低的成本，并且可以分析更多的时间和空间参数。本研究的目的是量化的反应时间和步幅持续时间的测量系统相比，使用测力平台。10名健康的年轻人对视觉线索做出反应。测量系统采用激光测距仪测量每条腿和双腿中心的位置和速度。我们将所开发的量测系统应用于韵律踏步练习，并量测反应时与跨步时。此外，使用测量系统量化离足时间和足接触时间，并与使用测力平台量化的离足时间和足接触时间进行比较。我们证实，测量系统可以检测参与者站在哪里，并测量反应时间和步幅持续时间。测量系统量化的离足时间和足接触时间的重测信度具有显著的一致性（p < 0.001）。由测量系统量化的离足时间和足接触时间与由力平台量化的离足时间和足接触时间高度相关（反应时间：r = 0.997，步幅持续时间：r = 0.879; p < 0.001）。新的测量系统提供了一个有效的措施，在年轻的健康成年人的时间步长参数。本系统测量反应时与跨步时之有效性已被评估，并应用于节奏踏步练习。
Avoiding a fall requires fast and appropriate step responses, stepping speed as a fall risk indicator has only been assessed in older adults. We have developed a new measurement system that applies a laser range finder to assess temporal and spatial parameters of stepping performance such as step speed, length, and accuracy. This measurement system has higher portability, lower cost, and can analyze a larger number of temporal and spatial parameters than existing measurement systems. The aim of this study was to quantify the system for measuring reaction time and stride duration by compared to that obtained using a force platform. Ten healthy young adults performed steps in response to visual cues. The measurement system applied a laser range finder to measure the position and velocity of the center of each leg and of both legs. We applied the developed measurement system to the rhythmic stepping exercise and measured reaction time and stride duration. In addition, the foot-off time and foot-contact time were quantified using the measurement system, and compared to the foot-off time and foot-contact time quantified using a force platform. We confirmed that the measurement system can detect where a participant stood and measured reaction time and stride duration. Remarkable consistency was observed in the test-retest reliability of the foot-off time and foot-contact time quantified by the measurement system (p < 0.001). The foot-off time and foot-contact time quantified by the measurement system were highly correlated with the foot-off time and foot-contact time quantified by the force platform (reaction time: r = 0.997, stride duration: r = 0.879; p < 0.001). The new measurement system provided a valid measure of temporal step parameters in young healthy adults. The validity of the system to measure reaction time and stride duration was evaluated, and confirmed by applying to the rhythmic stepping exercise.
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DOI：
10.1093/gerona/62.5.537
发表时间：
2007-05-01
影响因子：
5.1
作者：
St George, Rebecca J.;Fitzpatrick, Richard C.;Lord, Stephen R.
通讯作者：
Lord, Stephen R.
DOI：
10.1109/tsmcb.2008.2004050
发表时间：
2009-02-01
影响因子：
--
作者：
Bellotto, Nicola;Hu, Huosheng
通讯作者：
Hu, Huosheng
DOI：
10.1093/gerona/56.10.m627
发表时间：
2001-10-01
影响因子：
5.1
作者：
Lord, SR;Fitzpatrick, RC
通讯作者：
Fitzpatrick, RC
影响因子：
6.7
作者：
BLAKE, AJ;MORGAN, K;BASSEY, EJ
通讯作者：
BASSEY, EJ
DOI：
10.1111/j.1532-5415.2004.52353.x
发表时间：
2004-08-01
影响因子：
6.3
作者：
Meher, I;Oddsson, LIE
通讯作者：
Oddsson, LIE