Working… Menu

Evaluation of Aging, Autonomic Nervous System Activity and Cardiovascular Events (PROOF)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00759304
Recruitment Status : Active, not recruiting
First Posted : September 25, 2008
Last Update Posted : February 18, 2021
Ministry of Health, France
Information provided by (Responsible Party):
Centre Hospitalier Universitaire de Saint Etienne

Brief Summary:

The regulatory effects of the autonomic nervous system (ANS) concern almost all organs which permanently feed information back to this global biological vigilance system controlling allostasis. Heart rate fluctuations are highly dependent on ANS control, making the heart one of the best indicators of ANS activity.

Low ANS activity level is associated with severe cardiac and cerebral events, as well as to death from any cause in the general population.

This PROOF study was hence designed to evaluate ANS activity levels among a healthy retired population, but should these levels decline overtime, to use this as a predictor of cardiovascular and cerebrovascular events, taking into account established cardiovascular risk factors.

Condition or disease

Detailed Description:
The main goal of this PROOF study is to evaluate, on a selected prospective cohort of subjects aged 65 years upon study entry, the prognostic values of ANS activity levels measured at preset times, and more specifically, of its decline over the follow-up period, for fatal and non-fatal cardiovascular and cerebrovascular events.

Layout table for study information
Study Type : Observational
Actual Enrollment : 1011 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Evaluation of Aging, Autonomic Nervous System Activity and Cardiovascular Events on a Prospective Cohort of Subjects Aged 65 Years
Actual Study Start Date : January 2, 2000
Estimated Primary Completion Date : December 2026
Estimated Study Completion Date : December 2026

PROOF cohort
Healthy inhabitants of the city of Saint-Etienne, France, and aged 65 years at the inclusion date.

Primary Outcome Measures :
  1. Composite criterion : fatal and non-fatal cardiovascular or cerebrovascular events [ Time Frame: During all the study ]

Secondary Outcome Measures :
  1. Presence and severity of clinically silent stroke revealed through brain MRI [ Time Frame: Years 1, 3 and 5 ]
  2. Neuropsychological performance [ Time Frame: Years 1, 3 and 5 ]
  3. ANS activity measured by heart rate variability + spontaneous baroreflex + blood pressure variability [ Time Frame: Years 1, 3 and 5 ]
  4. Biological data : fasting blood glucose, total and HDL cholesterol, triglycerides and CRP [ Time Frame: Years 1, 3 and 5 ]

Biospecimen Retention:   Samples With DNA
Serum, DNA

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   65 Years to 65 Years   (Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Subjects were recruited amongst the inhabitants of the city of Saint-Etienne, France, and were eligible if aged 65 at the inclusion date.

Inclusion Criteria:

  • 65 years old
  • informed consent signed

Exclusion Criteria:

  • prior myocardiac infarction
  • prior stroke
  • hearth failure
  • atrial fibrillation
  • insulin-treated diabetes mellitus
  • cardiac pacemaker
  • disease limiting life expectancy to < 5 years
  • contraindication to brain MRI
  • living in an institution

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00759304

Layout table for location information
Centre Hospitalier de Saint-Etienne
Saint-Etienne, France, 42055
Sponsors and Collaborators
Centre Hospitalier Universitaire de Saint Etienne
Ministry of Health, France
Layout table for investigator information
Principal Investigator: Jean-Claude BARTHELEMY, MD PhD CHU de Saint-Etienne
Publications of Results:
Other Publications:
Publications automatically indexed to this study by Identifier (NCT Number):

Layout table for additonal information
Responsible Party: Centre Hospitalier Universitaire de Saint Etienne Identifier: NCT00759304    
Other Study ID Numbers: 9808112
First Posted: September 25, 2008    Key Record Dates
Last Update Posted: February 18, 2021
Last Verified: February 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Centre Hospitalier Universitaire de Saint Etienne:
cardiovascular risk factors
Autonomic nervous system
Myocardiac infarction
Neuropsychological evaluation
Prospective cohort