Effect of Prior Mental or Physical Fatigue on the Biomechanical Response During a Lifting Task

Repetitive lifting is a requirement in many occupations and often leads to prevalent and costly back injuries. What is unknown is how fatigue, whether mental or physical, occurring before the primary lifting task impacts the biomechanical response during the task. Study participants completed three...

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Published inProceedings of the Human Factors and Ergonomics Society Annual Meeting Vol. 60; no. 1; pp. 997 - 998
Main Authors Kotowski, Susan E., Niehaus, Joseph, Ofat, Alyssa, Presnell, Michael, Regelski, Alena, Rockwell, Bradley
Format Journal Article
LanguageEnglish
Published Los Angeles, CA SAGE Publications 01.09.2016
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Summary:Repetitive lifting is a requirement in many occupations and often leads to prevalent and costly back injuries. What is unknown is how fatigue, whether mental or physical, occurring before the primary lifting task impacts the biomechanical response during the task. Study participants completed three lifting tasks with prior mental fatigue (Stroop test), prior physical fatigue (running on a treadmill), or no prior fatigue. Electromyography (EMG) was used to measure muscle activity and fatigue, and Borg’s Rating of Perceived Exertion (RPE) was also assessed. Muscle activation data and RPE data indicated that both prior mental and physical fatigue increases muscle activation and perceived exertion.
ISSN:2169-5067
1071-1813
2169-5067
DOI:10.1177/1541931213601231