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The relationship between home blood pressure measurement and room temperature in a Japanese general population

Hypertension Research volume 44, pages 454–463 (2021)Cite this article

Abstract

Blood pressure (BP) is influenced by various factors, and it is known that temperature and BP have a negative relationship. However, few reports have examined the relationship between BP and temperature throughout the day in the same participant over time. Therefore, this study aimed to investigate the relationship between BP and temperature in the morning and evening in the same participants during a time period of ~1 year. In total, 401 participants, who participated in a community-based health checkup survey in Tarumizu, Japan, were enrolled. Five participants were excluded due to missing data. All participants measured their BP and the room temperature at home using a blood pressure monitor (HEM-9700T, OMRON Healthcare, Kyoto, Japan). The mean systolic BP (SBP) and diastolic BP (DBP) in the morning were significantly higher than the mean of the measurements taken in the evening (SBP: morning vs. evening 128 ± 15 mmHg vs. 122 ± 14 mmHg, P < 0.0001; DBP: morning vs. evening 77 ± 10 mmHg vs. 72 ± 8 mmHg, P < 0.0001). Using a linear mixed model with participants as a random effect, SBP and DBP were significantly associated with temperature in both the morning and evening. In the morning, in almost every month except July, a significant association between SBP and temperature was observed. However, there was a significant relationship between evening BP and temperature in all months. In conclusion, BP was significantly related to temperature in both the morning and evening during the year-long study. Furthermore, BP and temperature were significantly associated in all months except morning measurements in July.

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Acknowledgements

We wish to thank Chikashi Yamaguchi and Kohko Horinouchi of the Kagoshima Heart Club for their help with obtaining BP data measured by the participants. This study was conducted by OMRON HEALTHCARE Co., Ltd. in cooperation with the Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University. The running cost of this observational study was funded by OMRON Healthcare Co., Ltd.

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Authors and Affiliations

  1. Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan

    Takuro Kubozono, Yuichi Akasaki, Shin Kawasoe, Satoko Ojima, Takeko Kawabata & Mitsuru Ohishi

  2. Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima, Japan

    Hyuma Makizako

  3. Tarumizu Municipal Medical Center, Tarumizu Chuo Hospital, Kagoshima, Japan

    So Kuwahata & Toshihiro Takenaka

  4. Tarumizu City Office, Kagoshima, Japan

    Mayuka Maeda & Mayu Ohno

  5. OMRON Healthcare Corporation, Kyoto, Japan

    Mika Kijimuta, Seisuke Fujiwara & Ken Miyagawa

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  1. Takuro Kubozono
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  2. Yuichi Akasaki
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  3. Shin Kawasoe
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  14. Mitsuru Ohishi
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Correspondence to Takuro Kubozono.

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Conflict of interest

TK, AY, and MO received research support from Omron Healthcare Co., Ltd. MK, SF, and KM are employees of OMRON Healthcare Co., Ltd.

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Kubozono, T., Akasaki, Y., Kawasoe, S. et al. The relationship between home blood pressure measurement and room temperature in a Japanese general population. Hypertens Res 44, 454–463 (2021). https://doi.org/10.1038/s41440-020-00564-3

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