A 1°C decrease in room temperature significantly increased morning systolic and diastolic blood pressures by 0.863 and 0.342 mmHg, respectively (P<0.001), independent of ambient temperature.
Cross-Sectional (n=779)
Does room temperature, socioeconomic status, and electricity usage influence home morning, evening, and sleep blood pressure in adults?
Lower room temperatures significantly increase morning and evening home blood pressures, independent of ambient temperature, highlighting the importance of indoor temperature management for hypertension control.
Mean Difference: 0.863
p-value: p=<0.001
Objective: Cold ambient temperatures are known to increase blood pressure (BP), but the influence of room temperature remains understudied. Socioeconomic status and electricity use may also influence BP through room temperature. This study examined the impact of room temperature, household income, and electricity usage in morning, evening, and sleep BP measured at home. Design and method: The cross-sectional study included 779 adults (mean age: 70.7 years) from a community-based longitudinal study. Home BP was measured for 1 week using a conventional cuff-oscillometric device, whereas sleep BP was automatically recorded at 00:00, 02:00, and 04:00 using a timer-equipped BP monitor. Room temperature was measured concurrently using a thermometer in the BP monitor. Electricity use for each participant was obtained from an electric power company. Socioeconomic status was assessed by a structured questionnaire. Results: A 1°C decrease in room temperature increased morning systolic and diastolic BPs by 0.863 and 0.342 mmHg, respectively (P =115 and =125 and <135 mmHg: odds ratio = 15.4, P <0.001). Household income was not directly correlated with morning BP, but it showed an inverse association with morning room temperature via reduced electricity usage. Conclusions: Room temperature significantly influenced home morning and evening BPs but not sleep BP, independent of ambient temperature. Maintaining appropriate room temperatures may aid in BP management at home.
Tabara et al. (Fri,) conducted a cross-sectional in Blood pressure (n=779). Room temperature decrease was evaluated on Morning systolic blood pressure change per 1°C decrease in room temperature (MD 0.863, p=<0.001). A 1°C decrease in room temperature significantly increased morning systolic and diastolic blood pressures by 0.863 and 0.342 mmHg, respectively (P<0.001), independent of ambient temperature.
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