NDLI: Design and Development of an Earthquake-Simulated Environment for the Study of Postural Stability

Content Provider	IEEE Xplore Digital Library
Author	Abu-Faraj, Z.O. Hamdan, T.F. Wehbi, M.R. Khalil, G.A. Hamdan, H.M.
Copyright Year	2006
Description	Author affiliation: American Univ. of Sci. & Technol., Beirut (Abu-Faraj, Z.O.; Hamdan, T.F.; Wehbi, M.R.; Khalil, G.A.; Hamdan, H.M.)
Abstract	Much is still unknown about the control of posture and postural stability within the unstable environment of an earthquake. Hence, the objectives behind this study were to investigate the lower-extremity muscular response and head acceleration of human subjects in maintaining postural stability during the event of a simulated seismic activity. In order to achieve these goals, an earthquake simulator was designed and developed to reproduce seismic activities compliant with the Richter magnitude and the Mercalli intensity scales. Since the Love wave is the most accountable for causing damage, it was selected from among the four existing types of earthquake activities in the simulator design. Validation tests of the developed simulator demonstrated high levels of safety, accuracy, and repeatability. A four-channel commercial biopotential data-acquisition system was used in conjunction with the earthquake simulator to collect dynamic electromyographic (EMG) data from the gastrocnemius-soleus and tibialis anterior muscles in the lower extremities, and to measure the anterior-posterior head acceleration using a 50-g linear axial accelerometer. Five healthy adult volunteers, free from any musculoskeletal or neurological disorders, participated in the validation of the system. Test trials were comprised of 10 stages, beginning with quiet standing and followed by an increasing simulated earthquake magnitude from 3.5 to 6.5 degrees on the Richter's scale. Data analysis revealed notable variations in lower extremity muscular activity and head acceleration, in the control of postural stability, as a result of the increased simulated seismic activities. Repeated trials showed marked reductions in the recorded data suggesting an adaptive learning about the perturbed environment. The results obtained from this study could be useful in determining the threshold of falling within different subject populations during an earthquake, and in improving the interior safety and ergonomics of elderly care and rehabilitation centers found on seismic belts.
Starting Page	188
Ending Page	193
File Size	389240
Page Count	6
File Format	PDF
ISBN	9789810579
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-11
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	NTU
Subject Keyword	Accelerometers Stability Earthquakes Humans Electromyography Safety Discrete event simulation Acceleration Extremities Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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