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To investigate the impact of social jetlag on body mass index (BMI) among shift nurses and its underlying mechanisms.
A convenience sample of 429 shift nurses from five tertiary hospitals in Sichuan Province was selected.Data were collected using the Munich Chronotype Questionnaire for Shift Workers (MCTQshift), the Pittsburgh Sleep Quality Index (PSQI), the Morningness-Eveningness Questionnaire (MEQ-5), and BMI measurements. Statistical analyses included univariate analysis, partial correlation analysis, and moderated mediation model testing.
Social jetlag significantly predicted BMI levels (β=0.348, 95% CI: 0.259-0.437, P<0.001). Sleep quality partially mediated the relationship between social jetlag and BMI,with an effect size of 0.101(95% CI: 0.030-0.172, P<0.001), accounting for 29% of the total effect. The predictive effect of social jetlag on BMI (β=0.194, 95% CI: 0.108-0.281, P<0.001) and the effect of sleep quality on BMI (β=-0.121, 95% CI: -0.215~-0.027,P=0.012) were both moderated by chronotype.
This study revealed the potential mechanisms through which social jetlag affects BMI levels among shift nurses. It highlights the importance of reducing social jetlag and improving sleep quality, as well as the role of chronotype in moderating the adverse effects of social jetlag on BMI abnormalities. These findings provide a theoretical basis for nursing managers to develop more scientific and effective interventions for BMI management among shift nurses, ultimately reducing BMI abnormalities and promoting their physical and mental health.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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