A Low Cost Wireless System to Monitor Plantar Pressure using Insole Sensor: Feasibility Approach

Varoto, Renato; Oliveira, Gustavo Casagrande; Lima, Adolfo Victor Freire de; Critter, Matheus Missola; Cliquet, Alberto

doi:10.5220/0006246402070214

Cited by 6 publications

(18 citation statements)

References 10 publications

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“…Indeed, changes of in-shoe temperature and humidity can lead to measurement drift, which requires the user to execute frequent system re-calibrations, thus making the use of wearable robots impractical [12,[20][21][22][23]. Finally, cost is a very important factor that may limit the adoption of insoles in applications with wearable robots; hence, even though several emerging technologies are targeting this requirement [24][25][26], the most established insoles on the market, to the author's knowledge, have never been integrated or tested within robotic devices [2,3,20].…”

Section: Introductionmentioning

confidence: 99%

Pressure-Sensitive Insoles for Real-Time Gait-Related Applications

Martini

Fiumalbi

Dell’Agnello

et al. 2020

Sensors

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Wearable robotic devices require sensors and algorithms that can recognize the user state in real-time, in order to provide synergistic action with the body. For devices intended for locomotion-related applications, shoe-embedded sensors are a common and convenient choice, potentially advantageous for performing gait assessment in real-world environments. In this work, we present the development of a pair of pressure-sensitive insoles based on optoelectronic sensors for the real-time estimation of temporal gait parameters. The new design makes use of a simplified sensor configuration that preserves the time accuracy of gait event detection relative to previous prototypes. The system has been assessed relatively to a commercial force plate recording the vertical component of the ground reaction force (vGRF) and the coordinate of the center of pressure along the so-called progression or antero-posterior plane (CoPAP) in ten healthy participants during ground-level walking at two speeds. The insoles showed overall median absolute errors (MAE) of 0.06 (0.02) s and 0.04 (0.02) s for heel-strike and toe-off recognition, respectively. Moreover, they enabled reasonably accurate estimations of the stance phase duration (2.02 (2.03) % error) and CoPAP profiles (Pearson correlation coefficient with force platform ρCoP = 0.96 (0.02)), whereas the correlation with vGRF measured by the force plate was lower than that obtained with the previous prototype (ρvGRF = 0.47 (0.20)). These results confirm the suitability of the insoles for online sensing purposes such as timely gait phase estimation and discrete event recognition.

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Section: Introductionmentioning

confidence: 99%

Pressure-Sensitive Insoles for Real-Time Gait-Related Applications

Martini

Fiumalbi

Dell’Agnello

et al. 2020

Sensors

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“…Tan et al designed and developed a plantar pressure measuring smart insole [8]. Varoto et al described the development and application of insole sensor to monitor foot plantar pressure [9]. Recently, some commercial techniques stand out in the analysis of plantar pressure, body motion and for gait characterization.…”

Section: Introductionmentioning

confidence: 99%

Foot Plantar Pressure Measurement Using Low Cost Force Sensitive Resistor (FSR): Feasibility Study

Jor

Das²,

Bappy³

et al. 2019

J. Sci. Res.

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Plantar pressure measurement is an essential and effective strategy in the assessment of foot musculoskeletal safety and footwear comfort. It is commonly applied in clinical gait analysis, sports and foot biomechanical studies. But most of the devices used for plantar pressure measurement are high cost and not readily available for the research. This study aims to present a low cost foot plantar pressure measurement system based on force sensitive resistor (FSR). The system is composed of low cost electronic instrumentation through FSR, arduino, LCD display, baseboard and a power bank. To verify the feasibility and effectiveness of the system, a linear load vs. pressure calibration test was made and a group of female participants performed static trials on heels of three different heights. Experimental results and comparative analysis showed that this system has stable performance in static measurements of plantar pressure.

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“…2 Additionally, the development of an objective database on plantar pressure and pressure increasing sites can contribute to scientific research in order to observe the best clinical outcome in sports medicine and foot and ankle surgery. 1,3 Baropodometry quantitatively evaluates plantar pressure and identifies anatomical landmark of overload. 4 The current gold standard in plantar pressure assessment is static and dynamic baropodometry in a treadmill or platform device.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, validation, reliability or applicability vary between different systems and studies on insole baropodometers. 2,3,[6][7][8] In our field, Varoto et al developed a wireless plantar pressure monitoring system, with low-cost data acquisition module, coupled with flexible high-resolution sensor. 3 The system was validated with a force platform and a pilot study conducted in a single individual based on static and dynamic activities in the biomechanical platform.…”

Section: Introductionmentioning

confidence: 99%

“…2,3,[6][7][8] In our field, Varoto et al developed a wireless plantar pressure monitoring system, with low-cost data acquisition module, coupled with flexible high-resolution sensor. 3 The system was validated with a force platform and a pilot study conducted in a single individual based on static and dynamic activities in the biomechanical platform. 3 However, the reliability of this system in normal individuals had not been studied.…”

Section: Introductionmentioning

confidence: 99%

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Reliability of Wireless Insole Baropodometry of Normal Individual’s Gait

et al. 2021

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Objective: The plantar pressure distribution can be assessed quantitatively by computerized baropodometry such as carpet or insole. An insole-type system with wireless transmission was developed and plantar pressure results were previously validated by force platform. However, the reproducibility of the system had not been determined. Our objective was to evaluate the reliability of the results in different gait cycles, clinical characteristics and in different plantar anatomical sites. Methods: 41 healthy adults (age, 34 ± 13 years; body mass index, 25 ± 5 kg/m2; 26 [63%], male, 26 [63%] practicing physical activity) were evaluated. Baropodometer evaluations were performed in 3 walking cycles with 100 m each, and the reliability between the cycles was examined. Pressure points on the heel, first metatarsal, fifth metatarsal and total plantar pressure were analyzed and compared. Results: Moderate agreement was identified between the second and third cycles (ICC, 0.66; 95% CI, 0.14-0.83). Physical activity practitioners showed higher total plantar pressure (70.8 vs 68.2 Kpa; p = 0.04) and higher pressure in the heel (70.7 vs 68.1 Kpa; p = 0.036) in relation to sedentary ones. Conclusion: The insole was able to assess plant pressure with moderate reliability from the adaptation period. Level of Evidence III, Case control study - Investigating a diagnostic test.

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A Low Cost Wireless System to Monitor Plantar Pressure using Insole Sensor: Feasibility Approach

Cited by 6 publications

References 10 publications

Pressure-Sensitive Insoles for Real-Time Gait-Related Applications

Pressure-Sensitive Insoles for Real-Time Gait-Related Applications

Foot Plantar Pressure Measurement Using Low Cost Force Sensitive Resistor (FSR): Feasibility Study

Reliability of Wireless Insole Baropodometry of Normal Individual’s Gait

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