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Caffeinated Drinks Intake, Late Chronotype, and Increased Body Mass Index among Medical Students in Chongqing, China: A Multiple Mediation Model

Author

Listed:
  • Yangchang Zhang

    (Department of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
    Department of Nursing, Chongqing Medical University, Chongqing 400016, China
    These authors contributed equally to this work.)

  • Yang Xiong

    (Department of the First Clinical Medicine, Chongqing Medical University, Chongqing 400016, China
    These authors contributed equally to this work.)

  • Jia Dong

    (Department of the First Clinical Medicine, Chongqing Medical University, Chongqing 400016, China)

  • Tingting Guo

    (Department of the First Clinical Medicine, Chongqing Medical University, Chongqing 400016, China)

  • Xiaoman Tang

    (Department of the First Clinical Medicine, Chongqing Medical University, Chongqing 400016, China)

  • Yong Zhao

    (Department of Public Health and Management, Chongqing Medical University, Chongqing 400016, China
    The Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing 400016, China
    Research Center for Medicine and Social Development, Chongqing Medical University, Chongqing 400016, China)

Abstract

Background : This paper investigates the problems regarding caffeinated drinks intake, late chronotype, and increased body mass index (BMI) among medical students at a Chinese university. Methods : This cross-sectional study was conducted in 2018 with 616 medical students from Chongqing Medical University in Chongqing, China, whose information were collected by a self-reported questionnaire that included four sections: Demographic characteristics; Caffeinated drinks intake and physical state; Morningness-Eveningness Questionnaire; Depression Anxiety Stress Scale 21. Multiple mediation analyses were conducted to test the impact of late chronotype on increased BMI through caffeinated drinks consumption through two models. Results : The significantly mediated effect of caffeinated drinks consumption was revealed (estimate: −0.01, SE = 0.01, 95% CI [−0.02, −0.01]), and which played a positive role in linking late chronotype (B = −0.01, SE = 0.01, p < 0.001) and increased BMI (B = 1.37, SE = 0.21, p < 0.01), but their significant association did not be found in reversed model. In addition, physical activity and inactivity times demonstrated significant indirect effects in the two models. Conclusions : Interventions should focus on reducing caffeinated drinks intake and sedentary behavior time, enhancing physical activity among medical students.

Suggested Citation

  • Yangchang Zhang & Yang Xiong & Jia Dong & Tingting Guo & Xiaoman Tang & Yong Zhao, 2018. "Caffeinated Drinks Intake, Late Chronotype, and Increased Body Mass Index among Medical Students in Chongqing, China: A Multiple Mediation Model," IJERPH, MDPI, vol. 15(8), pages 1-12, August.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:8:p:1721-:d:163160
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    References listed on IDEAS

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    1. Peter G. Kopelman, 2000. "Obesity as a medical problem," Nature, Nature, vol. 404(6778), pages 635-643, April.
    2. Steven E. Kahn & Rebecca L. Hull & Kristina M. Utzschneider, 2006. "Mechanisms linking obesity to insulin resistance and type 2 diabetes," Nature, Nature, vol. 444(7121), pages 840-846, December.
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    1. Nuria Sempere-Rubio & Mariam Aguas & Raquel Faubel, 2022. "Association between Chronotype, Physical Activity and Sedentary Behaviour: A Systematic Review," IJERPH, MDPI, vol. 19(15), pages 1-16, August.
    2. Travis Tian-Ci Quek & Wilson Wai-San Tam & Bach X. Tran & Min Zhang & Zhisong Zhang & Cyrus Su-Hui Ho & Roger Chun-Man Ho, 2019. "The Global Prevalence of Anxiety Among Medical Students: A Meta-Analysis," IJERPH, MDPI, vol. 16(15), pages 1-18, July.

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