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Race and cardiovascular reactivity. A replication.

J K Murphy1, B S Alpert, S S Walker

  • 1Department of Pediatrics, University of Tennessee, Memphis 38103.

Hypertension (Dallas, Tex. : 1979)
|April 1, 1988
PubMed
Summary
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Black children show higher cardiovascular reactivity to stress than white children, confirming previous findings. This heightened reactivity in childhood may contribute to the higher prevalence of hypertension in Black adults.

Area of Science:

  • Cardiovascular Health
  • Pediatric Health
  • Psychological Stress Response

Background:

  • Previous research indicated higher cardiovascular reactivity in Black children compared to white children during psychological stress.
  • Generalizability of prior findings was limited by reliance on urban volunteers and a wide age range.

Purpose of the Study:

  • To replicate and validate previous findings on cardiovascular reactivity differences between Black and white children.
  • To investigate these differences in a rural population to enhance generalizability.

Main Methods:

  • Examined 481 third-grade students from a rural Tennessee county.
  • Utilized the same psychological stressor (a video game) as in the previous study.
  • Measured heart rate and blood pressure reactivity.

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Main Results:

  • Black children exhibited significantly greater heart rate reactivity than white children.
  • Black children also showed greater blood pressure reactivity compared to white children.
  • The findings replicated the results of the initial study.

Conclusions:

  • The study confirms greater cardiovascular reactivity to psychological stress in Black children versus white children.
  • This childhood reactivity may serve as a marker or mechanism contributing to the higher incidence of hypertension in Black adults.