Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments

© 2013 IEEE. As turns and walking speed modulation are crucial for functional mobility, development of a field-based tool to objectively evaluate non-steady-state gait is essential. This study aimed to quantify spatiotemporal gait using three Android smartphones during steady-state walking, turns, a...

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Main Authors: Patima Silsupadol, Paphawee Prupetkaew, Teerawat Kamnardsiri, Vipul Lugade
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/70246
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-702462020-10-14T08:36:47Z Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments Patima Silsupadol Paphawee Prupetkaew Teerawat Kamnardsiri Vipul Lugade Biochemistry, Genetics and Molecular Biology Computer Science Engineering Health Professions © 2013 IEEE. As turns and walking speed modulation are crucial for functional mobility, development of a field-based tool to objectively evaluate non-steady-state gait is essential. This study aimed to quantify spatiotemporal gait using three Android smartphones during steady-state walking, turns, and gait speed modulation in laboratory and free-living environments. In total, 24 adults ambulated along a 10-m walkway in both environments under seven conditions: straight walking, 90° left or right turn, and modulating gait speed from usual-slow, usual-fast, slow-fast, and fast-slow. Two smartphones were attached to the body, with another phone placed in a shoulder bag. Gait velocity, step time, step length, cadence, and symmetry were computed from smartphone-based tri-axial accelerometers and validated with motion capture and video, in laboratory and free-living environments, respectively. Validity was assessed using Pearson's correlation and Bland-Altman analysis. Gait velocity results revealed moderate to very high validity across all walking conditions, smartphone models, smartphone locations, and environments. Correlations for gait velocity ranged between 0.87-0.91 and 0.79-0.83 for straight walking, 0.86-0.95 and 0.86-0.89 for turning, and 0.51-0.90 and 0.67-0.89 for speed modulation trials, in laboratory and free-living environments, respectively. Step time, step length, and cadence demonstrated high to very high correlations for straight walking and turns. However, symmetry results revealed high correlations only during straight walking in the laboratory. Conditions that included slow walking showed negligible to moderate validity with a high bias. In conclusion, smartphones can be employed as field-based devices to assess steady-state walking, turning, and speed modulation across environment, model, and placement when walking faster than 0.5 m/s. 2020-10-14T08:26:09Z 2020-10-14T08:26:09Z 2020-04-01 Journal 21682208 21682194 2-s2.0-85074302030 10.1109/JBHI.2019.2930091 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85074302030&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70246
institution Chiang Mai University
building Chiang Mai University Library
continent Asia
country Thailand
Thailand
content_provider Chiang Mai University Library
collection CMU Intellectual Repository
topic Biochemistry, Genetics and Molecular Biology
Computer Science
Engineering
Health Professions
spellingShingle Biochemistry, Genetics and Molecular Biology
Computer Science
Engineering
Health Professions
Patima Silsupadol
Paphawee Prupetkaew
Teerawat Kamnardsiri
Vipul Lugade
Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments
description © 2013 IEEE. As turns and walking speed modulation are crucial for functional mobility, development of a field-based tool to objectively evaluate non-steady-state gait is essential. This study aimed to quantify spatiotemporal gait using three Android smartphones during steady-state walking, turns, and gait speed modulation in laboratory and free-living environments. In total, 24 adults ambulated along a 10-m walkway in both environments under seven conditions: straight walking, 90° left or right turn, and modulating gait speed from usual-slow, usual-fast, slow-fast, and fast-slow. Two smartphones were attached to the body, with another phone placed in a shoulder bag. Gait velocity, step time, step length, cadence, and symmetry were computed from smartphone-based tri-axial accelerometers and validated with motion capture and video, in laboratory and free-living environments, respectively. Validity was assessed using Pearson's correlation and Bland-Altman analysis. Gait velocity results revealed moderate to very high validity across all walking conditions, smartphone models, smartphone locations, and environments. Correlations for gait velocity ranged between 0.87-0.91 and 0.79-0.83 for straight walking, 0.86-0.95 and 0.86-0.89 for turning, and 0.51-0.90 and 0.67-0.89 for speed modulation trials, in laboratory and free-living environments, respectively. Step time, step length, and cadence demonstrated high to very high correlations for straight walking and turns. However, symmetry results revealed high correlations only during straight walking in the laboratory. Conditions that included slow walking showed negligible to moderate validity with a high bias. In conclusion, smartphones can be employed as field-based devices to assess steady-state walking, turning, and speed modulation across environment, model, and placement when walking faster than 0.5 m/s.
format Journal
author Patima Silsupadol
Paphawee Prupetkaew
Teerawat Kamnardsiri
Vipul Lugade
author_facet Patima Silsupadol
Paphawee Prupetkaew
Teerawat Kamnardsiri
Vipul Lugade
author_sort Patima Silsupadol
title Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments
title_short Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments
title_full Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments
title_fullStr Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments
title_full_unstemmed Smartphone-Based Assessment of Gait during Straight Walking, Turning, and Walking Speed Modulation in Laboratory and Free-Living Environments
title_sort smartphone-based assessment of gait during straight walking, turning, and walking speed modulation in laboratory and free-living environments
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85074302030&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/70246
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