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dc.contributor.authorLin, Dingdingen_US
dc.date.accessioned2014-03-14T21:08:55Z
dc.date.available2014-03-14T21:08:55Z
dc.date.issued2010-01-19en_US
dc.identifier.otheretd-01272010-130538en_US
dc.identifier.urihttp://hdl.handle.net/10919/37218
dc.description.abstractFalls in the workplace are a major cause of injuries and fatalities. Muscle fatigue is one important factor that has been linked to a decrement in postural control and a potential increased falling risk. However, potential interactive effects of muscle fatigue with other risk factors remain unclear, and practical interventions are needed to mitigate the adverse effects of muscle fatigue. The current work was conducted to address these research needs through three experimental studies. The first study investigated how muscle fatigue affects postural control during quiet standing on inclined surfaces. Inclined surfaces compromised postural control, with the most deleterious effects found while standing in a lateral direction. Fatigue did not result in further decrements in postural control during standing on inclined surfaces. The second study investigated the effects of muscle fatigue on postural control while lifting unexpected loads. Lifting an object with unexpected mass compromised postural control, with a more substantial effect found in the unexpectedly light load condition. Fatigue-related effects were not consistent, though there was evidence that lumbar muscle fatigue did not compound the adverse effects of lifting an object in unexpected mass conditions. The last study evaluated the efficacy of three interventions (two auditory stimulations and periodic rest breaks) at mitigating the adverse effects of muscle fatigue on postural control. Allowance of rest breaks did not improve postural control during the fatiguing work, though it was indicated that benefits may be present for some individuals. Both a static pure tone and moving conversation appeared to offset fatigue-induced postural instability. The current research provides a more comprehensive understanding of the contribution of muscle fatigue to fall risks during occupationally relevant tasks and assessed the efficacy of practical interventions to reduce the risk of falls. These findings may facilitate the development of strategies to prevent occupational falls related to muscle fatigue, inclined surfaces, and manual material handling tasks.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartIRB_approval_letter_Study1.pdfen_US
dc.relation.haspartIRB_approval_letter_Study2.pdfen_US
dc.relation.haspartIRB_approval_letter_Study3.pdfen_US
dc.relation.haspartETD_Lin.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectinterventionen_US
dc.subjectliftingen_US
dc.subjectinclinationen_US
dc.subjectmuscle fatigueen_US
dc.subjectpostural controlen_US
dc.titleEffects of Localized Muscle Fatigue on Postural Control: Interactive Effects with Inclined Surfaces and Unexpected Loads, and Intervention Efficacyen_US
dc.typeDissertationen_US
dc.contributor.departmentIndustrial and Systems Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineIndustrial and Systems Engineeringen_US
dc.contributor.committeechairNussbaum, Maury A.en_US
dc.contributor.committeememberAgnew, Michael J.en_US
dc.contributor.committeememberKleiner, Brian M.en_US
dc.contributor.committeememberMadigan, Michael L.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01272010-130538/en_US
dc.date.sdate2010-01-27en_US
dc.date.rdate2010-02-16
dc.date.adate2010-02-16en_US


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