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Lipid Variability--Influence of Stress

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00005468
First Posted: May 26, 2000
Last Update Posted: May 13, 2016
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.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)
  Purpose
To investigate the variability of lipids and specifically the effects of stress on serum triglyceride levels, total cholesterol, HDL, and LDL in a 2.5 year epidemiological study.

Condition
Cardiovascular Diseases Heart Diseases Hypercholesterolemia

Study Type: Observational

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: July 1990
Study Completion Date: December 1992
Detailed Description:

BACKGROUND:

While researchers had documented some of the behavioral contributors to fluctuation in individuals' lipid levels (e.g., nutrition patterns, smoking, exercise), little attention had been given to psychosocial stress. Early reports utilizing accountants, race car drivers, and air traffic controllers provided some uncontrolled data associating stress with cholesterol increases. Yet, no empirical research on stress that concomitantly examined other related influences was available. This paucity of data was probably due to lack of objective measures of stress and difficulty in measuring lipid subfractions.

DESIGN NARRATIVE:

Based on the results of their pilot study, and their research observations, the investigators predicted significant positive associations between stress level and triglycerides. A total of 228 public accountants (148 men and 80 women to provide comparable power between the sexes) were recruited from the greater Birmingham, Alabama area. Participants were evaluated monthly for 18 months, across three stressful and non-stressful work intervals (i.e., tax seasons). The investigators also collected data (during this same time frame) to closely monitor the following variables that affect lipids: dietary intake (including alcohol, caffeine, total calories, total fat, saturated fat, and dietary cholesterol), smoking, and physical activity, and oral contraceptive use, pregnancy status and menstrual stage among the women. Additionally, a substudy presented a unique opportunity for them to investigate the relation between stress and triglyceride-rich lipoproteins in the formation of foam cells.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria
No eligibility criteria
  Contacts and Locations
No Contacts or Locations Provided
  More Information

ClinicalTrials.gov Identifier: NCT00005468     History of Changes
Other Study ID Numbers: 4913
R01HL043041 ( U.S. NIH Grant/Contract )
First Submitted: May 25, 2000
First Posted: May 26, 2000
Last Update Posted: May 13, 2016
Last Verified: June 2000

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases
Hypercholesterolemia
Hyperlipidemias
Dyslipidemias
Lipid Metabolism Disorders
Metabolic Diseases