Impact of Chronotype and Social Jetlag on the Body Mass Index of Nurses in Shifts
Objective To explore the impact of chronotype and social jetlag on the body mass index(BMI)of nurses in shifts,and to provide theoretical basis for administrators to formulate management plan accordingly.Methods From July to August 2023,429 nurses in shifts from 5 tertiary A general hospitals with similar latitude in Southwest China were selected by convenience sampling method and the survey was conducted with the Munich chronotype questionnaire for shift-workers(MCTQshift),morning and evening questionnaire 5(MEQ-5)and BMI measurement.Results There were statistically significant differences in BMI among nurses in shifts with different age,sex,marital status,chronotype and social jetlag difference(all P<0.05).After controlling for confounding factors,the main effect and interaction of chronotype and social jetlag on BMI of shift nurses were significant(F=51.16,P<0.01;F=68.02,P<0.01;F=51.48,P<0.01).Social jetlag had statistical significance on BMI level of shift nurses under different chronotype(P<0.01).When the social jetlag was high,the chronotype had statistical significance on the BMI level of shift nurses(P<0.01).Conclusions Chronotype and social jetlag jointly affect the BMI level of nurses in shifts.It is suggested to consider the interaction between them as the theoretical basis to intervene in the management of BMI level of nurses in shifts,so as to improve their metabolic disorders.
work in shiftschronotypesocial jetlagbody mass index