Mediating effect of Qi-deficiency constitution on relationship between resilience and fatigue among ocean-going crew members
Objective To explore the mediating effect of Qi-deficiency constitution in Chinese medicine body mass on the relationship between resilience and fatigue among ocean-going crew members,providing a basis for developing fatigue prevention and intervention strategies.Methods From March to April 2024,443 crew members undertaking ocean-going missions were surveyed with the Connor-Davidson Resilience Scale(CD-RISC),Chinese Medicine Constitution Questionnaire(CCMQ),and Multidimensional Fatigue Inventory(MFI-20).SPSS 26.0 software was used to compare fatigue conditions among personnel with different characteristics and analyze the correlations among resilience,Qi-deficiency constitution,and fatigue.Amos 21.0 software was used to construct a structural equation model to verify the mediating effect of Qi-deficiency constitution on the relationship between resilience and fatigue.Results A total of 436 valid questionnaires were collected,with an effective collection rate of 98.4％.Among the crew members,24.1％(105/436)showed significant fatigue symptoms.Crew members with oceangoing service time longer than 10 years had higher fatigue scores than those with 5-9 years(P＜0.05).Crew members with bachelor's degrees or above had higher fatigue scores than those with college and high school education or below(both P＜0.05).Resilience was negatively correlated with Qi-deficiency constitution and fatigue(rs=-0.574,-0.730,both P＜0.01),while Qi-deficiency constitution was positively correlated with fatigue(r,=0.747,P＜0.01).The structural equation model showed that the"resilience → fatigue"and"resilience → Qi-deficiency constitution → fatigue"pathways accounted for 58.3％and 41.7％of the total effect,respectively(both P＜0.01).Conclusions Qi-deficiency constitution partially mediated the relationship between resilience and fatigue.The fatigue level of ocean-going crew members should not be ignored.Resilience training and Qi-deficiency constitution-based interventions can help prevent and alleviate fatigue among ocean-going crew members,thereby enhancing overall mission effectiveness.
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