Investigation on the sleep status and mental stress of the commissioned and enlisted onboard the large naval vessel

Abstract

Objective To investigate the sleep status and mental stress of the commissioned and enlisted onboard the large naval vessel. Methods Sample surveys and statistical analyses were made on the sleep status and mental stress of 80 commissioned and enlisted personnel onboard the large naval vessel by using Pittsburgh Sleep Quality Index (PQSI) and Acute Stress Response Scale (ASRS). Results (1) The average sleep time at night was (5.61±1.84) hours, and total scores of PSQI were (8.05±3.55). Survey results indicated that 61.9% of the subjects had sleep disorder. (2) The most common problem of sleep disorder among the commissioned and enlisted personnel was difficult in falling asleep, and other problems were reduced sleep time, wake-up during sleep, early awakening, having dreams or nightmares. (3) Total PSQI scores and various factors such as sleep efficiency, sleep disorder, and daytime dysfunction were all positively correlated with emotional response and changes in behavior. Conclusions There existed certain problems in the overall sleep status and mental stress among the commissioned and enlisted onboard the large naval vessel. Such intervention measures as mental consultation and further improvement of shipboard environment should be taken to improve their sleep status and enhance their mental health. Key words: Naval vessel; Soldiers; Sleep status; Sleep disorder; Mental stress