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Mid-day sleep and blood pressure in patients with arterial hypertension. Author's reply

Published:January 05, 2021DOI:https://doi.org/10.1016/j.ejim.2020.12.014
      We thank Dr Kawada for his comments on our study [
      • Kawada Tomoyuki
      Mid-day sleep and blood pressure in patients with arterial hypertension.
      ]. He raised some concerns regarding the effect of mid-day sleep on alertness and performance as well as health outcomes. He based his concerns on three articles [
      • Takahashi M
      • Fukuda H
      • Arito H.
      Brief naps during post-lunch rest: effects on alertness, performance, and autonomic balance.
      ,
      • Takahashi M
      • Arito H.
      Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit.
      ,
      • Devine JK
      • Wolf JM.
      Integrating nap and night-time sleep into sleep patterns reveals differential links to health-relevant outcomes.
      ]. First of all, in these three articles the sample observed were healthy subjects (in one paper [
      • Takahashi M
      • Arito H.
      Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit.
      ] subjects were sleep deprived) and not hypertensive patients as it was in our study [
      • Kallistratos MS
      • Poulimenos LE
      • Tsinivizov P
      • Varvarousis D
      • Kouremenos N
      • Pittaras A
      • et al.
      The effect of Mid-Day Sleep on blood pressure levels in patients with arterial hypertension.
      ]. So the characteristics of the sample are completely different. In addition, in the articles of Takahashi M et al; [
      • Takahashi M
      • Fukuda H
      • Arito H.
      Brief naps during post-lunch rest: effects on alertness, performance, and autonomic balance.
      ,
      • Takahashi M
      • Arito H.
      Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit.
      ], the authors assessed the effect of midday sleep only on alertness and performance, which is a field completely different from our study, since we assessed the effect of naps on blood pressure (BP) levels. The fact that midday sleep may have effect on alertness and performance was not relevant with our study.
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      References

        • Kawada Tomoyuki
        Mid-day sleep and blood pressure in patients with arterial hypertension.
        Eur J Intern Med. 2020; https://doi.org/10.1016/j.ejim.2020.12.007
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        • Wolf JM.
        Integrating nap and night-time sleep into sleep patterns reveals differential links to health-relevant outcomes.
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        • Poulimenos LE
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        • et al.
        The effect of Mid-Day Sleep on blood pressure levels in patients with arterial hypertension.
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