@article{ref1,
title="Shoulder muscular fatigue from static posture concurrently reduces cognitive attentional resources",
journal="Human factors",
year="2019",
author="Stephenson, Mitchell L. and Ostrander, Alec G. and Norasi, Hamid and Dorneich, Michael C.",
volume="ePub",
number="ePub",
pages="18720819852509-18720819852509",
abstract="OBJECTIVE: The goal of this work is to determine whether muscular fatigue concurrently reduces cognitive attentional resources in technical tasks for healthy adults. <br><br>BACKGROUND: Muscular fatigue is common in the workplace but often dissociated with cognitive performance. A corpus of literature demonstrates a link between muscular fatigue and cognitive function, but few investigations demonstrate that the instigation of the former degrades the latter in a way that may affect technical task completion. For example, laparoscopic surgery increases muscular fatigue, which may risk attentional capacity reduction and undermine surgical outcomes. <br><br>METHOD: A total of 26 healthy participants completed a dual-task cognitive assessment of attentional resources while concurrently statically fatiguing their shoulder musculature until volitional failure, in a similar loading pattern observed in laparoscopic procedures. Continuous and discrete monitoring task performance was recorded to reflect attentional resources. <br><br>RESULTS: Electromyography of the anterior deltoid and descending trapezius, as well as self-assessment surveys indicated fatigue occurrence; continuous tracking error, tracking velocity, and response time significantly increased with muscular fatigue. <br><br>CONCLUSION: Muscular fatigue concurrently degrades cognitive attentional resources. APPLICATION: Complex tasks that rely on muscular and cognitive performance should consider interventions to reduce muscular fatigue to also preserve cognitive performance.<p /> <p>Language: en</p>",
language="en",
issn="0018-7208",
doi="10.1177/0018720819852509",
url="http://dx.doi.org/10.1177/0018720819852509"
}