Cardiovascular responses to treadmill exercise testing in anemia

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R K Kapoor1, A Kumar, M Chandra

  • 1Department of Pediatrics, King George's Medical College, Lucknow.

Indian Pediatrics
|July 1, 1997
PubMed

Insights

Anemia in children significantly reduces exercise capacity and cardiovascular response. Anemic children showed lower exercise duration and metabolic equivalents compared to healthy peers.

Area of Science:

  • Pediatric cardiology
  • Exercise physiology

Background:

  • Anemia is a common condition in children.
  • Its impact on exercise performance and cardiovascular responses requires further investigation.

Purpose of the Study:

  • To evaluate exercise performance and cardiovascular responses in anemic children using treadmill testing.
  • To compare these parameters between anemic children and healthy controls.

Main Methods:

  • Prospective case-control study involving 41 anemic children (mild to severe) and 11 healthy children (aged 7-12 years).
  • Subjects underwent exercise testing on a Quinton Model Q5000 treadmill using the Modified Naughton protocol.
  • Parameters measured included heart rate, blood pressure, double product, ECG changes, exercise duration, and metabolic equivalents (METs).

Main Results:

  • While resting and peak exercise cardiovascular parameters showed no significant differences, anemic children exhibited significantly lower gains in heart rate, double product, exercise duration, and METs compared to controls (p < 0.001).
  • These findings suggest a blunted cardiovascular response to exercise in anemic children.

Conclusions:

  • Anemia in children leads to reduced exercise capacity.
  • The blunted cardiovascular responses are attributed to a depleted cardiac reserve in anemic individuals.
Abstract

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