Effects of prolonged deployment at sea on fatigue and sleep of shipboard personnel
10.3760/cma.j.issn.1009-6906.2017.02.002
- VernacularTitle:长时间出海作业对艇员疲劳与睡眠状况的影响
- Author:
Kexian LI
1
;
Hao YU
1
;
Dingwen JIANG
1
Author Information
1. 海军医学研究所, 上海,200433
- Publication Type:Journal Article
- Keywords:
Prolonged deployment at sea;
Ship crew;
Sleep;
Fatigue
- From:
Chinese journal of nautical medicine and hyperbaric medicine
2017;24(2):89-91
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate changes in the more of fatigue and sleep of shipboard personnel during prolonged deployment at sea and effects of prolonged deployment on fatigue and sleep.Methods at day 20 during deployment and at homeport,questionnaire surveys were conducted on the ship crew by using fatigue self-assessment scale (FSAS) and Pittsburg sleep quality index (PSQI).Results Correlative analysis was made on the fatigue and sleep status of the crew during prolonged deployment at sea.Results showed that fatigue scores of the individuals were positively correlated with the recognition of fatigue,and actual sleep time was negatively correlated with total sleep scores.During prolonged deployment,the sensation of fatigue gradually increased from morning to noon,but then gradually decreased from noon to evening.Generally,the sensation of fatigue at different time points of a day did not fluctuate too much.Fatigue scores at 9:30 in the morning,12∶30 at noon and at 15:30 in the afternoon during prolonged deployment were respectively(3.79 ± 0.31,4.23 ± 0.28 and 4.03 ± 0.46),which were remarkably higher than those detected before deployment (2.38 ± 0.42,2.21 ± 0.25 and 1.98 ± 0.36) respectively(P ＜ 0.01).With the average scores of individual sensation of fatigue as the demarcation line (9.99),they could be divided into the high-score group and lowscore group.Those who held that environment exerted great impact on fatigue had higher fatigue self-assessment scores,and they had less sleep time with relatively poor sleep quality.Statistical significance could be seen,when comparisons were made between the 2 groups(P ＜ 0.05).With the average scores of(3.60)as an index of sleep quality assessment,those individuals who had better sleep quality experienced less fatigue,and their fatigue recognition scores were also relatively lower and also had longer sleep time.Statistical significance could be seen,when comparisons were made between the 2 groups (P ＜ 0.05).Conclusions Sleep and fatigue status of the shipboard naval personnel were correlated with fatigue recognition,and the sensation of fatigue during deployment was directly correlated with the work-rest schedules.Those who had better sleep quality would experience less fatigue.
