Wednesday, May 16, 2018

Validity of shoe-type inertial measurement units for Parkinson’s disease patients during treadmill walking

How is your therapist objectively measuring your gait irregularities? If no measurements are being done, How the hell can any intervention be said to cause improvement?

Maybe one of these other ones;

Sensoria™ Fitness Socks  March 2014 

Sensor embedded socks  January 2014 

Markerless Human Motion Capture for Gait Analysis  October 2017 

Ambulatory assessment of walking balance after stroke using instrumented shoes

May 2016 

The Parkinson's shoe

 

Design of a biofeedback device for gait rehabilitation in post-stroke patients

October 2015

Insole plantar pressure systems in the gait analysis of post-stroke rehabilitation 

October 2015

The latest one here:

 Validity of shoe-type inertial measurement units for Parkinson’s disease patients during treadmill walking

Journal of NeuroEngineering and Rehabilitation201815:38
Received: 9 June 2017
Accepted: 7 May 2018
Published: 15 May 2018

Abstract

Background

When examining participants with pathologies, a shoe-type inertial measurement unit (IMU) system with sensors mounted on both the left and right outsoles may be more useful for analysis and provide better stability for the sensor positions than previous methods using a single IMU sensor or attached to the lower back and a foot. However, there have been few validity analyses of shoe-type IMU systems versus reference systems for patients with Parkinson’s disease (PD) walking continuously with a steady-state gait in a single direction. Therefore, the purpose of this study is to assess the validity of the shoe-type IMU system versus a 3D motion capture system for patients with PD during 1 min of continuous walking on a treadmill.

Methods

Seventeen participants with PD successfully walked on a treadmill for 1 min. The shoe-type IMU system and a motion capture system comprising nine infrared cameras were used to collect the treadmill walking data with participants moving at their own preferred speeds. All participants took anti-parkinsonian medication at least 3 h before the treadmill walk. An intraclass correlation coefficient analysis and the associated 95% confidence intervals were used to evaluate the validity of the resultant linear acceleration and spatiotemporal parameters for the IMU and motion capture systems.

Results

The resultant linear accelerations, cadence, left step length, right step length, left step time, and right step time showed excellent agreement between the shoe-type IMU and motion capture systems.

Conclusions

The shoe-type IMU system provides reliable data and can be an alternative measurement tool for objective gait analysis of patients with PD in a clinical environment.

 

 

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