Novel techniques for a wireless motion capture system for the monitoring and rehabilitation of disabled persons for application in smart buildings

Banach, Marzena; Wasilewska, Anna; Długosz, Rafał; Pauk, Jolanta

doi:10.3233/thc-182514

Cited by 13 publications

(9 citation statements)

References 9 publications

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“…Examination of all these parameters on different sides of the body allows to estimate the asymmetry. Simple and complex quantitative methods are used for more accurate coordination testing: starting from dynamometer and metronome to comprehensive motion capture and posturographic systems [32]. However, we did not find a single test, either qualitative or quantitative, for assessing MS whole-body (upper and lower) asymmetry.…”

Section: Introductionmentioning

confidence: 69%

Quantitative body symmetry assessment during neurological examination

Daunoravičienė

Žižienė

Ovcinikova

et al. 2020

THC

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BACKGROUND: A lack of movement coordination characterized by the undershoot or overshoot of the intended location with the hand, arm, or leg is often found in individuals with multiple sclerosis (MS). Standardized as Finger-to-Nose (FNT) and The Heel-to-Shin (HST) tests are the most frequently used tests for qualitative examination of upper and lower body coordination. Inertial sensors facilitate in performing quantitative motion analysis and by estimating body symmetry more accurately assess coordination lesion and imbalance. OBJECTIVES: To assess the body symmetry of upper and lower limbs quantitatively, and to find the best body symmetry indices to discriminate MS from healthy individuals (CO). METHODS: 28 MS patients and 23 CO participated in the study. Spatiotemporal parameters obtained from six Inertial Measurement Units (IMUs) were placed on the upper and lower extremities during FNT and HST tests. All data were analyzed using statistical methods in MATLAB. RESULTS: Asymmetry indices of temporal parameters showed a significant increase in upper body and lower body asymmetry of MS compared to CO. However, CO have a greater kinematic asymmetry compared to MS. CONCLUSION: Temporal parameters are the most sensitive to body asymmetry evaluation. However, range of motion is completely inappropriate if it is calculated for one movement cycle.

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Section: Introductionmentioning

confidence: 69%

Quantitative body symmetry assessment during neurological examination

Daunoravičienė

Žižienė

Ovcinikova

et al. 2020

THC

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“…Human movement is a result of a complex interaction between various peripheral and central inputs. Quantitative variables such as joint angles, joint moments and powers, pressure distribution, or spatiotemporal gait parameters are crucial to identify a person's disability [1][2][3][4]. Among the gait parameters, plantar pressure distribution is a significant clinical parameter in the diagnosis of lower limbs deformities [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A portable plantar pressure system: Specifications, design, and preliminary results

Ostaszewski

Pauk

Lesniewski

2020

THC

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BACKGROUND: In recent years, there has been an increasing interest in developing in-shoe foot plantar pressure systems. Although such devices are not novel, devising insole devices for gait analysis is still an important issue. OBJECTIVE: The goal of this study is to develop a new portable system for plantar pressure distribution measurement based on a three-axis accelerometer. METHODS: The portable system includes: PJRC Teensy 3.6 microcontroller with 32-bit ARM Cortex-M4 microprocessor with a clock speed of 180 MHz; HC-11 radio modules (transmitter and receiver); a battery; a fixing band; pressure sensors; MPU-9150 inertial navigation module; and FFC tape. The pressure insole is leather-based and consists of seven layers. It is divided into 16 areas and the outcome of the system is data concerning plantar pressure distribution under foot during gait. The system was tested on 22 healthy volunteer subjects, and the data was compared with a commercially available system: Medilogic. RESULT: The SNR value for the proposed sensor is 28.27 dB. For a range of pressure of 30–100 N, the sensitivity is 0.0066 V/N while the linearity error is 0.05. The difference in plantar pressure from both the portable plantar pressure system and Medilogic is not statistically significant. CONCLUSION: The proposed system could be recommended for research applications both inside and outside of a typical gait laboratory.

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“…However, this process is slow and requires significant time from patient and clinician. There are technology-based alternatives to this approach, like using force/pressure sensors on a walking surface like a treadmill or a walkway [5,6] or optical motion capture systems [7,8,9,10,11,12]. However, people need to be assessed in specific installations, and experts are often needed to set and/or calibrate equipment.…”

Section: Introductionmentioning

confidence: 99%

Weight-Bearing Estimation for Cane Users by Using Onboard Sensors

Ballesteros

Tudela

Caro-Romero

et al. 2019

Sensors

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Mobility is a fundamental requirement for a healthy, active lifestyle. Gait analysis is widely acknowledged as a clinically useful tool for identifying problems with mobility, as identifying abnormalities within the gait profile is essential to correct them via training, drugs, or surgical intervention. However, continuous gait analysis is difficult to achieve due to technical limitations, namely the need for specific hardware and constraints on time and test environment to acquire reliable data. Wearables may provide a solution if users carry them most of the time they are walking. We propose to add sensors to walking canes to assess user’s mobility. Canes are frequently used by people who cannot completely support their own weight due to pain or balance issues. Furthermore, in absence of neurological disorders, the load on the cane is correlated with the user condition. Sensorized canes already exist, but often rely on expensive sensors and major device modifications are required. Thus, the number of potential users is severely limited. In this work, we propose an affordable module for load monitoring so that it can be widely used as a screening tool. The main advantages of our module are: (i) it can be deployed in any standard cane with minimal changes that do not affect ergonomics; (ii) it can be used every day, anywhere for long-term monitoring. We have validated our prototype with 10 different elderly volunteers that required a cane to walk, either for balance or partial weight bearing. Volunteers were asked to complete a 10 m test and, then, to move freely for an extra minute. The load peaks on the cane, corresponding to maximum support instants during the gait cycle, were measured while they moved. For validation, we calculated their gait speed using a chronometer during the 10 m test, as it is reportedly related to their condition. The correlation between speed (condition) and load results proves that our module provides meaningful information for screening. In conclusion, our module monitors support in a continuous, unsupervised, nonintrusive way during users’ daily routines, plus only mechanical adjustment (cane height) is needed to change from one user to another.

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Novel techniques for a wireless motion capture system for the monitoring and rehabilitation of disabled persons for application in smart buildings

Abstract: The proposed system, based on wireless techniques, offers a high commercial potential. However, it requires extensive cooperation between teams, including hardware and software design, system modelling, and architectural design.

Cited by 13 publications

References 9 publications

Quantitative body symmetry assessment during neurological examination

Quantitative body symmetry assessment during neurological examination

A portable plantar pressure system: Specifications, design, and preliminary results

Weight-Bearing Estimation for Cane Users by Using Onboard Sensors

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