NDLI: Force adaptation in human walking with symmetrically applied downward forces on the pelvis

Content Provider	IEEE Xplore Digital Library
Author	Vashista, V. Agrawal, N. Shaharudin, S. Reisman, D.S. Agrawal, S.K.
Copyright Year	2012
Description	Author affiliation: Dept. of Mech. Eng., Univ. of Delaware, Newark, DE, USA (Vashista, V.; Shaharudin, S.; Agrawal, S.K.) \|\| Dept. of Commun. Sci. Disorders, Northwestern Univ., Evanston, IL, USA (Agrawal, N.) \|\| Dept. of Phys. Therapy, Univ. of Delaware, Newark, DE, USA (Reisman, D.S.)
Abstract	The application of external constraints and/or applied forces during movement can lead to reactive as well as adaptive changes in human motion. Previous researches in the literature have usually focused on adaptation in human kinematics when external forces were applied using exoskeletons during the swing phase of gait. This work aims to study adaptation in human walking when externally applied forces are present on the pelvis both during the swing and stance phases of the gait. A novel tethered pelvic assist device (TPAD) was used to passively apply downward forces on the human pelvis while walking. During the experiment, healthy subjects walked on a treadmill at a constant speed while their kinematics and foot pressure data were recorded. Data analysis revealed that the healthy subjects exhibited both reactive as well as adaptive changes in their gait parameters. The immediate response of the subjects was to increase their hip flexion to clear their foot off the ground as they were unable to lift their pelvis to their usual height during normal motion. Seven out of eight subjects in the study resisted the downward forces to move their pelvis up. Eventually, they reached a level of downward force that they could sustain over the training. This adaptation to the downward force was reflected in the heel peak pressure values during the cycles of the gait. On removing the tethers, aftereffects in heel peak pressure during the gait cycles were observed.
Sponsorship	IEEE Eng. Medicine Biol. Soc.
Starting Page	3312
Ending Page	3315
File Size	1069933
Page Count	4
File Format	PDF
ISBN	9781424441198
ISSN	1557170X
e-ISBN	9781457717871
DOI	10.1109/EMBC.2012.6346673
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Training Legged locomotion Force Pelvis Humans Hip
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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