Effect of postural angle on back muscle activities in aging female workers performing computer tasks

Kamil, N.S.M. and Md Dawal, Siti Zawiah (2015) Effect of postural angle on back muscle activities in aging female workers performing computer tasks. Journal of Physical Therapy Science, 27 (6). pp. 1967-1970. ISSN 0915-5287

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Official URL: http://www.ncbi.nlm.nih.gov/pubmed/26180359

Abstract

Purpose This study investigated the effects of postural angle on back muscle activity during a computer task in aging women. Subjects Seventeen women >= 50 years old participated. Methods The participants were instructed to perform computer-related tasks for 20 minutes on a workstation that simulated typical office working conditions. Back posture was measured from the measured trunk and pelvic angles. Electromyography activities were recorded simultaneously from the cervical erector spinae, longissimus, and multifidus muscles. Results The lowest mean percentages of maximum voluntary contraction for the cervical erector spinae and longissimus muscles were obtained when the upper trunk and pelvic angles were between 0 degrees to -5 degrees from the sagittal plane. The back muscle activities increased as the upper trunk and pelvic angles exceeded 0 degrees. Statistical analysis showed significant correlations between upper trunk angle and cervical erector spinae and longissimus muscle activities. Similarly, pelvic angle was significantly correlated with cervical erector spinae and multifidus muscle activities. Conclusion A neutral back posture minimizes muscle activities in aging women performing computer tasks.

Item Type: Article
Additional Information: ISI Document Delivery No.: CM8FN Times Cited: 0 Cited Reference Count: 23 Cited References: ANDERSSON G B J, 1979, Spine, V4, P52, DOI 10.1097/00007632-197901000-00009 Colombini D, 1986, ERGONOMICS WORKING P, P331 Dankaerts W, 2006, SPINE, V31, P2017, DOI 10.1097/01.brs.0000228728.11076.82 Dankaerts W, 2009, SPINE, V34, P1610, DOI 10.1097/BRS.0b013e3181aa6175 Delisle A, 2006, ERGONOMICS, V49, P139, DOI 10.1080/10610270500450739 Department of Statistics Malaysia, 1982, NUMB LAB FORC AG GRO Dumas GA, 2009, INT J IND ERGONOM, V39, P313, DOI 10.1016/j.ergon.2008.03.003 Dunk NM, 2009, CLIN BIOMECH, V24, P164, DOI 10.1016/j.clinbiomech.2008.12.003 Hsiao LP, 2012, APPL ERGON, V43, P926, DOI 10.1016/j.apergo.2011.12.014 Johnson PW, 2000, SCAND J WORK ENV HEA, V26, P398 Konrad P, 2005, ABC EMG PRACTICAL IN Laursen B, 2000, CLIN BIOMECH, V15, pS30, DOI 10.1016/S0268-0033(00)00057-7 Mainenti MRM, 2014, J PHYS THER SCI, V26, P567, DOI 10.1589/jpts.26.567 Mork PJ, 2009, CLIN BIOMECH, V24, P169, DOI 10.1016/j.clinbiomech.2008.11.001 Ng F, 2012, THE STAR ONLINE O'Sullivan PB, 2006, SPINE, V31, pE707, DOI 10.1097/01.brs.0000234735.98075.50 Reeves NP, 2007, CLIN BIOMECH, V22, P266, DOI 10.1016/j.clinbiomech.2006.11.011 Ron. Microsoft, 2013, MICROSOFT US WORKERS Scannell JP, 2003, PHYS THER, V83, P907 Shephard RJ, 2000, INT J IND ERGONOM, V25, P535, DOI 10.1016/S0169-8141(99)00036-0 Kothiyal K, 2001, Int J Occup Saf Ergon, V7, P15 Yoo WG, 2015, J PHYS THER SCI, V27, P57, DOI 10.1589/jpts.27.57 Yoo WG, 2012, J PHYS THER SCI, V24, P1325 Kamil, Nabilla Sofia Mohd Dawal, Siti Zawiah Md Malaysian Elderly Longitudinal Research and project on Ergonomic Work Station Design for Manufacturing Industry - High Impact Project Grant UM.C/625/1/HIR/ASH/02; Program Rakan Penyelidikan Universiti Malaya FP023-2012A This research is supported by Malaysian Elderly Longitudinal Research and project on Ergonomic Work Station Design for Manufacturing Industry funded by High Impact Project Grant (UM.C/625/1/HIR/ASH/02) and Program Rakan Penyelidikan Universiti Malaya (FP023-2012A). 0 SOC PHYSICAL THERAPY SCIENCE TOKYO J PHYS THER SCI
Uncontrolled Keywords: Postural angle, Muscle activity, Aging
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 03 Mar 2016 01:08
Last Modified: 27 Feb 2019 01:22
URI: http://eprints.um.edu.my/id/eprint/15658

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