Randomized controlled trial about the influence of instruction to use programmed room heating on morning blood pressure surge.

Randomized controlled trial about the influence of instruction to use programmed room heating on morning blood pressure surge. - Randomized controlled trial about the influence of instruction to use programmed room heating on morning blood pressure surge.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000004623

Enrollment

400

Registered

2010-11-25

Start date

2010-12-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

none

Interventions

Instruction to set the heater of living room to start automatically at 60 minutes before awaking time in winter morning (if possible target temperature is 24 degree centigrade) control: without any i

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Male and female aged 60 and above

Exclusion criteria

Exclusion criteria: Participants who have no heating devises with programmed starting function, participants who habitualy use the living room as a bed room.

Design outcomes

Primary

Measure	Time frame
Sleep-trough Morning Blood Pressure Surge: 1) minus 2) 1) Morning BP: average in 2 hours after wake-up time, 2) Lowest sleeping BP: average of three BP readings centered on the lowest sleeping BP.	—

Secondary

Measure	Time frame
Blood pressure in 30 minutes after awaking, mean blood pressure in 60 minutes after awaking, pulse rate, pulse pressure. Ambulatory blood pressure, indoor temperature, and physical activity in 4h after rising.	—

Countries

Japan

Contacts

Public ContactKEIGO SAEKI

Nara Medical University School of Medicine Department of Community health and epidemiology

saekik@naramed-u.ac.jp0744-22-3051

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026