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Related Experiment Videos

Physical activity assessment methods in the Jackson Heart Study.

Patricia M Dubbert1, Teresa Carithers, Barbara E Ainsworth

  • 1GV (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, Mississippi 39216, USA. patricia.dubbert@med.va.gov

Ethnicity & Disease
|December 2, 2005
PubMed
Summary

The Jackson Heart Study (JHS) describes physical activity measures, including the Diet and Physical Activity Substudy (DPASS). These validated methods offer unique insights into physical activity, risk factors, and cardiovascular disease in African Americans.

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Area of Science:

  • Cardiovascular Health
  • Epidemiology
  • Public Health

Background:

  • The Jackson Heart Study (JHS) is a major epidemiological study focusing on cardiovascular disease risk factors in African Americans.
  • Understanding physical activity patterns is crucial for assessing cardiovascular disease (CVD) risk.

Purpose of the Study:

  • To describe the physical activity (PAC) survey instrument and data collection methods used in the JHS.
  • To detail the validation of survey responses using objective measures like accelerometers and pedometers.
  • To outline the specific measures used in the Diet and Physical Activity Substudy (DPASS).

Main Methods:

  • The JHS PAC survey was administered via interview, assessing four domains of physical activity.
  • Objective measures included 24-hour accelerometer monitoring and pedometer step counts from subsamples.

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  • The DPASS utilized a past week activity (PWA) questionnaire and pedometer data.

    • Main Results:

    • 5296 participants completed the PAC survey; 423 underwent accelerometer monitoring, and 499 completed DPASS measures.
    • Initial analyses indicated a bimodal distribution of leisure and sports activity, with similar patterns across genders and study groups.
    • The collected data demonstrated the feasibility of obtaining comprehensive physical activity information.

    Conclusions:

    • The JHS physical activity measures are robust and suitable for examining associations with CVD risk factors.
    • These validated data provide a unique resource for understanding physical activity's role in cardiovascular health among African Americans.