search
Back to results

Precursors of CVD Risk Factors--Project Heartbeat

Primary Purpose

Cardiovascular Diseases, Heart Diseases, Hypercholesterolemia

Status
Completed
Phase
Locations
Study Type
Observational
Intervention
Sponsored by
National Heart, Lung, and Blood Institute (NHLBI)
About
Eligibility
Locations
Outcomes
Full info

About this trial

This is an observational trial for Cardiovascular Diseases

Eligibility Criteria

8 Years - 14 Years (Child)All SexesDoes not accept healthy volunteers

No eligibility criteria

Sites / Locations

    Outcomes

    Primary Outcome Measures

    Secondary Outcome Measures

    Full Information

    First Posted
    May 25, 2000
    Last Updated
    May 12, 2016
    Sponsor
    National Heart, Lung, and Blood Institute (NHLBI)
    search

    1. Study Identification

    Unique Protocol Identification Number
    NCT00005478
    Brief Title
    Precursors of CVD Risk Factors--Project Heartbeat
    Study Type
    Observational

    2. Study Status

    Record Verification Date
    March 2004
    Overall Recruitment Status
    Completed
    Study Start Date
    September 1996 (undefined)
    Primary Completion Date
    undefined (undefined)
    Study Completion Date
    September 1998 (Actual)

    3. Sponsor/Collaborators

    Name of the Sponsor
    National Heart, Lung, and Blood Institute (NHLBI)

    4. Oversight

    5. Study Description

    Brief Summary
    To elucidate the changes in body size, composition, and configuration occurring in adolescence, because these are important precursors of change in blood pressure and blood lipids.
    Detailed Description
    BACKGROUND: Project HeartBeat! was uniquely designed to investigate the course of change in cardiovascular disease risk factors and several categories of covariates, including the anthropometric indicators addressed in this study. The data pertained to the 678 participants who entered the Project in 1991-93 at ages 8, 11 or 14 years of age, of whom 49.1 percent were female and 20.1 percent were black. Of the 395 participants who became eligible for 10 or more 4-monthly examinations, 349 (88.4 percent) completed at least 10 occasions; 538 participants of 556 who were eligible for seven or more examinations (96.8 percent) completed at least seven. Multi-level (MLn) analytic methods previously tested with other data were utilized for this analysis. DESIGN NARRATIVE: Data from Project Heartbeat were analyzed. Hypotheses tested included: (1) the time patterns of change in several indicators of body size, composition and configuration over the period of observation; (2) the relations between the time patterns of change in these indicators and the corresponding patterns for change in selected endocrine factors; and (3) the explanatory contributions of energy intake and expenditure to variation between individuals in their observed time patterns of change in these indicators. The anthropometric indicators addressed were: weight (total mass), height, body mass index (BMI, wt/ht2), fat-free mass, fat mass, per cent body fat, and fat distribution (waist/hip ratio). Each of these indicators were examined first separately and then in relation to selected endocrinologic measures (testosterone, estradiol, and DHEAS) and to energy intake and expenditure (from interview histories of diet and physical activity). Existing data from up to twelve 4-monthly examinations over the age range from 8-17 years conducted in Project HeartBeat! were analyzed. The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    Cardiovascular Diseases, Heart Diseases, Hypercholesterolemia, Hypertension

    7. Study Design

    10. Eligibility

    Sex
    All
    Minimum Age & Unit of Time
    8 Years
    Maximum Age & Unit of Time
    14 Years
    Accepts Healthy Volunteers
    No
    Eligibility Criteria
    No eligibility criteria
    Overall Study Officials:
    First Name & Middle Initial & Last Name & Degree
    Darwin Labarthe
    Organizational Affiliation
    University of Texas

    12. IPD Sharing Statement

    Learn more about this trial

    Precursors of CVD Risk Factors--Project Heartbeat

    We'll reach out to this number within 24 hrs