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KMID : 1035420180060040001
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Journal of The Korean Society of Integrative Medicine
2018 Volume.6 No. 4 p.1 ~ p.13
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The Relationship between Cumulative Fatigue and Stress of Seafarers Measured by Evaluating Autonomic Nervous Functions and Survey Studies
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Kim Byeong-Jo
Lee Jung-Hun
Lee Su-Kyoung
Kwon Hae-Yeon
Kwon Young-Tae
Park Yong-Sun
Chae Byeong-Geun
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Abstract
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Purpose : The purpose of this study has been performed to find the relationship between seafarers' cumulative fatigue and stress measured by evaluating autonomic nervous functions and the results of surveys conducted using questionnaires.
Methods : The subjects were seafarers working on various ships (home trade ships) of South Korea, who were healthy adults without any diseases, as confirmed through preliminary surveys were recruited through simple random sampling. A device that measures autonomic nervous functions by analyzing heart rate variability(Omnifit Mind care, Korea), which is also used often in clinical diagnoses and studies at universities, university hospitals, and general hospitals was used to measure the seafarers' cumulative fatigue and stress. Pearson's correlation analyses were also conducted to test the relationship between cumulative fatigue and stress measured by evaluating autonomic nervous functions and the results of surveys conducted with questionnaires.
Result : There was no correlation between mean cumulative fatigue measured for each ship type and seafarers position through autonomic nervous functions evaluation and fatigue severity scale(FSS). There also was no correlation between the mean levels of stress measured for each ship type and seafarers position through autonomic nervous functions evaluation and survey scores of Korean occupational stress scale(KOSS).
Conclusion : Therefore, in order to prevent man-made accidents in the sea among seafarers working with irregular port entry/departure schedules and under environments involving continued vibration, noises, and shaking, it is necessary to analyzed cumulative fatigue and stress scientifically and objectively, such as through autonomic nervous functions evaluation rather than through surveys.
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KEYWORD
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seafarer, cumulative fatigue, stress, autonomic nervous function
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