Seven phases of gait detected in real-time using shank attached gyroscopes

A new gyroscope-based gait phase detection system (GPDS) with ability to detect all seven phases of gait was proposed in this study. Gyroscopes were attached to each shank. Shank angular velocity, about the medio-lateral axis, was streamed to a PC and a rule-based algorithm was used to identify char...

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Bibliographic Details
Published in2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) Vol. 2015; pp. 5529 - 5532
Main Authors Behboodi, A., Wright, H., Zahradka, N., Lee, S. C. K.
Format Conference Proceeding Journal Article
LanguageEnglish
Published United States IEEE 01.08.2015
Subjects
Algorithms
Angular velocity
Biomechanical Phenomena
Delays
Event detection
Exercise Test
Gait
Gyroscopes
Humans
Legged locomotion
Phase detection
Real-time systems
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ISSN1094-687X
1557-170X
DOI10.1109/EMBC.2015.7319644

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Summary:A new gyroscope-based gait phase detection system (GPDS) with ability to detect all seven phases of gait was proposed in this study. Gyroscopes were attached to each shank. Shank angular velocity, about the medio-lateral axis, was streamed to a PC and a rule-based algorithm was used to identify characteristics of the signals. Five subjects were asked to walk on treadmill at their self-selected speed while using this system. All 7 phases of gait: LR, MSt, TSt, PSw, ISw, MSw, and TSw were detected in real-time using only shank angular velocities. To quantify system performance, sensor data was compared to simultaneously collected motion capture data. Average gait phase detection delays of the system were less than 40ms except TSw (74ms). The present system, consisting of minimal sensors and decreased processing, is precise, cosmetic, economical, and a good alternative for portable stand-alone applications.
ISSN:1094-687X
1557-170X
DOI:10.1109/EMBC.2015.7319644