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首页> 外文期刊>Journal of Biomechanics >FREQUENCY CONTENT OF NORMAL AND DIABETIC PLANTAR PRESSURE PROFILES - IMPLICATIONS FOR THE SELECTION OF TRANSDUCER SIZES
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FREQUENCY CONTENT OF NORMAL AND DIABETIC PLANTAR PRESSURE PROFILES - IMPLICATIONS FOR THE SELECTION OF TRANSDUCER SIZES

机译：正常和糖尿病足压力谱的频率含量-对选择传感器尺寸的含义

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摘要

How small do pressure transducers need to be in order to faithfully measure the plantar pressure profiles (PPPs) under normal and diabetic feet? In this study, pressures were collected from five diabetic and six non-diabetic subjects using a commercial measurement system with 25 mm(2) transducers. Discrete Fourier Transform techniques were then used to determine (i) the spatial frequency content of diabetic and non-diabetic PPPs, and (ii) the effects of quadrupling the transducer area (from 5 mm x 5 mm to 10 mm x 10 mm). When the data were filtered to represent the effects of using 10 mm x 10 mm transducers, it was found that the ensuing reductions in peak pressure in the toe region (50 kPa) were significantly greater than in all other regions of the foot (p < 0.95). There was a significant correlation between pressure underestimations and measured peak pressures in the metatarsal regions. Based on data collected with 25 mm(2) transducers it was concluded that transducer sizes greater than 6.36 mm x 6.18 mm (medio-lateral and antero-posterior directions) would result in sub-optimal sampling of PPPs. Copyright (C) 1996 Elsevier Science Ltd. [References: 11]
机译：为了忠实地测量正常和糖尿病足下的足底压力曲线（PPPs），压力传感器需要多小？在这项研究中，使用具有25 mm（2）换能器的商业测量系统从五个糖尿病和六个非糖尿病受试者中收集压力。然后，使用离散傅立叶变换技术确定（i）糖尿病和非糖尿病PPP的空间频率含量，以及（ii）使换能器面积翻倍（从5 mm x 5 mm到10 mm x 10 mm）的影响。当过滤数据以表示使用10 mm x 10 mm传感器的效果时，发现脚趾区域（50 kPa）随之而来的峰值压力下降明显大于脚的所有其他区域（p < 0.95）。 pressure骨区域的压力低估与峰值压力之间存在显着的相关性。根据使用25 mm（2）换能器收集的数据，得出的结论是，换能器尺寸大于6.36 mm x 6.18 mm（中外侧和前后方向）将导致PPP采样欠佳。版权所有（C）1996 Elsevier Science Ltd. [引用：11]

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