Disturbance of circadian rhythm in blood pressure by lack of darkness at night

J. Siegelová; B. Fišer; Z. Brázdová; M. Forejt; P. Homolka; P. Vank; A. Havelková; J. Hollan; Germaine G Cornelissen-Guillaume; F. Halberg

Disturbance of circadian rhythm in blood pressure by lack of darkness at night

J. Siegelová, B. Fišer, Z. Brázdová, M. Forejt, P. Homolka, P. Vank, A. Havelková, J. Hollan, Germaine G Cornelissen-Guillaume, F. Halberg

Physiology

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The aim of the study was to verify whether exposure to light at night was associated with disturbances of circadian variability of blood pressure in comparison to usual dark at night in healthy subjects. Nine subjects were recruited for 48-h ambulatory blood pressure monitoring. Systolic and diastolic blood pressure was measured three times per hour during the day and one time per hour at night. During the first night the subjects slept in darkness, during the second night the bedroom was illuminated. Our result shows that the illumination of bedroom at night increases systolic blood pressure by about 11 mmHg. Long lasting increase of systolic blood pressure could be connected with an increase of risk of cardiovascular diseases like stroke and myocardial infarction.

Original language	English (US)
Pages (from-to)	147-154
Number of pages	8
Journal	Scripta Medica Facultatis Medicae Universitatis Brunensis Masarykianae
Volume	79
Issue number	3
State	Published - 2006

Keywords

Blood pressure
Circadian rhythm
Light at night as a risk of cardiovascular disease

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abstract = "The aim of the study was to verify whether exposure to light at night was associated with disturbances of circadian variability of blood pressure in comparison to usual dark at night in healthy subjects. Nine subjects were recruited for 48-h ambulatory blood pressure monitoring. Systolic and diastolic blood pressure was measured three times per hour during the day and one time per hour at night. During the first night the subjects slept in darkness, during the second night the bedroom was illuminated. Our result shows that the illumination of bedroom at night increases systolic blood pressure by about 11 mmHg. Long lasting increase of systolic blood pressure could be connected with an increase of risk of cardiovascular diseases like stroke and myocardial infarction.",

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TY - JOUR

T1 - Disturbance of circadian rhythm in blood pressure by lack of darkness at night

AU - Siegelová, J.

AU - Fišer, B.

AU - Brázdová, Z.

AU - Forejt, M.

AU - Homolka, P.

AU - Vank, P.

AU - Havelková, A.

AU - Hollan, J.

AU - Cornelissen-Guillaume, Germaine G

AU - Halberg, F.

PY - 2006

Y1 - 2006

N2 - The aim of the study was to verify whether exposure to light at night was associated with disturbances of circadian variability of blood pressure in comparison to usual dark at night in healthy subjects. Nine subjects were recruited for 48-h ambulatory blood pressure monitoring. Systolic and diastolic blood pressure was measured three times per hour during the day and one time per hour at night. During the first night the subjects slept in darkness, during the second night the bedroom was illuminated. Our result shows that the illumination of bedroom at night increases systolic blood pressure by about 11 mmHg. Long lasting increase of systolic blood pressure could be connected with an increase of risk of cardiovascular diseases like stroke and myocardial infarction.

AB - The aim of the study was to verify whether exposure to light at night was associated with disturbances of circadian variability of blood pressure in comparison to usual dark at night in healthy subjects. Nine subjects were recruited for 48-h ambulatory blood pressure monitoring. Systolic and diastolic blood pressure was measured three times per hour during the day and one time per hour at night. During the first night the subjects slept in darkness, during the second night the bedroom was illuminated. Our result shows that the illumination of bedroom at night increases systolic blood pressure by about 11 mmHg. Long lasting increase of systolic blood pressure could be connected with an increase of risk of cardiovascular diseases like stroke and myocardial infarction.

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KW - Circadian rhythm

KW - Light at night as a risk of cardiovascular disease

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Disturbance of circadian rhythm in blood pressure by lack of darkness at night

Abstract

Keywords

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