Publication:
Modeling the Effect of Days Underway and Environmental Motion on Crew Physical Activity on Naval Vessels

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Authors
Matsangas, Panagiotis
McCauley, Michael
Subjects
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Date of Issue
2015-12
Date
December 2015
Publisher
Language
Abstract
Results from earlier research on crew activity onboard naval vessels suggest that personnel activity is a function of two components, time underway, and ship motion severity. Physical activity reduction was attributed to some combination of sopite syndrome and motion-induced fatigue. Although both stressors are a well-recognized problem in the naval environment, few studies have addressed them. Building on earlier findings, this work proposes a mathematical model to account for the effect of motion and days underway on the observed personnel physical activity. Model predictions are evaluated against a retrospective analysis of existing actigraphic recordings from three earlier projects in the naval operational environment. Analysis showed that the model predicts activity with a good approximation. These results further validated the effect of the days underway and motion component in predicting personnel activity. The observed reduction in physical activity may be a valuable surrogate indicator of sopite syndrome and motion-induced fatigue. Future research efforts should incorporate the effect of sleep, mission requirements, and the occupational component of crew physical activity.
Type
Article
Description
Series/Report No
Department
Operations Research (OR)
Other Units
Naval Postgraduate School (U.S.)
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Format
9 p.
Citation
Matsangas, Panagiotis, and Michael McCauley. "Modeling the Effect of Days Underway and Environmental Motion on Crew Physical Activity on Naval Vessels." Naval Engineers Journal 127.4 (2015): 49-57.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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