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Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions

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Main Authors: Maikala, Rammohan V., Ciriello, Vincent M., O'Brien, Niall V., Banks, Jacob J., Rivard, Amanda J.
Other Authors: rammohan.maikala@libertymutual.com
Format: Working Paper
Language:English
Published: Institute of Electrical and Electronics Engineers (IEEE) 2012
Subjects:
Ulnar deviation
Maximum acceptable torque
Near-infrared spectroscopy
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/21424
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spelling my.unimap-214242012-10-18T08:36:39Z Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions Maikala, Rammohan V. Ciriello, Vincent M. O'Brien, Niall V. Banks, Jacob J. Rivard, Amanda J. rammohan.maikala@libertymutual.com Ulnar deviation Maximum acceptable torque Near-infrared spectroscopy Link to publisher's homepage at http://ieeexplore.ieee.org/ We evaluated local hemodynamic responses simultaneously from flexor and extensor muscles in the forearm of 14 male workers while performing repetitive ulnar deviation task for 8 hours. First, a psychophysical approach was utilized to identify participants’ maximum acceptable torque (in Nm) at 15 and 25 repetitions per min (rpm). Second, while performing an ulnar deviation task repetitively for 8 hours at their psychophysically acceptable torque, Tissue Oxygenation Index (TOI) and Tissue Hemoglobin Index (THI) were collected. Workers exerted lower acceptable torque for the task with a repetition rate of 25 rpm as compared to 15 rpm (3.57 ± 2.7 versus 3.97 ± 2.5 Nm, P=0.014). When the TOI responses (representing muscle oxygen saturation) after each hour of effort were matched for the net acceptable torque exerted, the mean TOI-torque ratio was 10.2% higher in the flexor region as compared to the extensor region throughout the workday. Also, when corrected for the torque exerted during both the 15 rpm and 25 rpm tasks, a dynamic adjustment of THI (representing muscle blood volume) to the time course of TOI resulted, suggesting a strong coupling between muscle blood flow and oxygen uptake as the task continued. Although the acceptable torque exerted was lowest for the 25 rpm task, the increased TOI-torque ratio coupled with increased THI per torque generated suggests that working at 25 rpm is metabolically more challenging than at 15 rpm. 2012-10-18T08:36:39Z 2012-10-18T08:36:39Z 2012-02-27 Working Paper p. 508-512 978-145771989-9 http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6179070 http://hdl.handle.net/123456789/21424 en Proceedings of the International Conference on Biomedical Engineering (ICoBE 2012) Institute of Electrical and Electronics Engineers (IEEE)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Ulnar deviation
Maximum acceptable torque
Near-infrared spectroscopy
spellingShingle Ulnar deviation
Maximum acceptable torque
Near-infrared spectroscopy
Maikala, Rammohan V.
Ciriello, Vincent M.
O'Brien, Niall V.
Banks, Jacob J.
Rivard, Amanda J.
Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
description Link to publisher's homepage at http://ieeexplore.ieee.org/
author2 rammohan.maikala@libertymutual.com
author_facet rammohan.maikala@libertymutual.com
Maikala, Rammohan V.
Ciriello, Vincent M.
O'Brien, Niall V.
Banks, Jacob J.
Rivard, Amanda J.
format Working Paper
author Maikala, Rammohan V.
Ciriello, Vincent M.
O'Brien, Niall V.
Banks, Jacob J.
Rivard, Amanda J.
author_sort Maikala, Rammohan V.
title Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
title_short Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
title_full Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
title_fullStr Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
title_full_unstemmed Use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
title_sort use of near-infrared spectroscopy in evaluating upper extremity muscle hemodynamics during an eight-hour exposure to repetitive hand-wrist motions
publisher Institute of Electrical and Electronics Engineers (IEEE)
publishDate 2012
url http://dspace.unimap.edu.my/xmlui/handle/123456789/21424
_version_ 1643793396486111232
score 13.222552

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