Association between napping and 24-hour blood pressure variability among university students: A pilot study

Jie Dai, Hua Ying Wu, Xiao Dong Jiang, Yong Jie Tang, Hao Kai Tang, Li Meng, Na Huang, Jing Yu Gao, Jian Li, Julien S. Baker, Chan Juan Zheng*, Yi De Yang*

*Corresponding author for this work

    Research output: Contribution to journalJournal articlepeer-review

    Abstract

    Background: Blood pressure variability (BPV) has been reported to be a predictor of cardiovascular and some cognitive diseases. However, the association between napping and BPV remains unknown. This study aimed to explore the association between napping and BPV. 

    Materials and methods: A cross-sectional study including 105 university students was conducted. Participants’ 24 h ambulatory blood pressure monitoring (24 h ABPM) were measured, and napping behaviors were investigated. BPV were measured by the 24 h ABPM, included standard deviation (SD), coefficient of variation (CV), and average real variability (ARV). 

    Results: Among the participants, 61.9% reported daytime napping. We found that nap duration was significantly associated with daytime CV of diastolic blood pressure (DBP) (r = 0.250, P = 0.010), nighttime CV of systolic blood pressure (SBP) (r = 0.217, P = 0.026), 24 h WCV of DBP (r = 0.238, P = 0.014), 24 h ARV of SBP (r = 0.246, P = 0.011) and 24 h ARV of DBP (r = 0.291, P = 0.003). Compared with the no napping group, 24 h WCV of DBP, daytime CV of DBP, and daytime SD of DBP were significantly higher in participants with napping duration >60 min. With multiple regression analysis we found that nap duration was an independent predictor for 24 h ARV of SBP (β = 0.859, 95% CI, 0.101–1.616, P = 0.027) and 24 h ARV of DBP (β = 0.674, 95% CI, 0.173–1.175, P = 0.009). 

    Conclusions: Napping durations are associated with BPV among university students. Especially those with napping durations >60 min had a significantly higher BPV than those non-nappers.

    Original languageEnglish
    Article number1062300
    Number of pages9
    JournalFrontiers in Pediatrics
    Volume11
    DOIs
    Publication statusPublished - 2 Mar 2023

    Scopus Subject Areas

    • Pediatrics, Perinatology, and Child Health

    User-Defined Keywords

    • 24-h ambulatory blood pressure monitoring
    • average real variability
    • blood pressure variability
    • napping duration
    • university students

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