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Exercise testing: improving performance with a ramped Bruce protocol.

P M Will1, J D Walter

  • 1Graduate Division and Cardiac Rehabilitation, Allegheny University Hospitals, Philadelphia, PA, USA.

American Heart Journal
|November 30, 1999
PubMed
Summary
This summary is machine-generated.

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The ramped Bruce protocol offers better exercise duration and patient comfort compared to the standard Bruce protocol during stress testing. Hemodynamic responses remain equivalent, making it a preferred alternative for treadmill exercise tests.

Area of Science:

  • Cardiology
  • Exercise Physiology
  • Clinical Trials

Background:

  • The standard Bruce protocol is a widely used treadmill exercise test for assessing cardiovascular health.
  • Modifications to exercise protocols aim to improve test efficacy and patient experience.

Purpose of the Study:

  • To compare the standard Bruce protocol with a ramped Bruce protocol in a general patient population.
  • To evaluate hemodynamic responses, test duration, and patient comfort between the two protocols.

Main Methods:

  • Twenty-three patients underwent both the standard Bruce and ramped Bruce treadmill protocols in a randomized order.
  • Hemodynamic parameters (heart rate, blood pressure), test duration, metabolic equivalents (METs), and patient-reported comfort were assessed.

Related Experiment Videos

Main Results:

  • Peak heart rate, systolic blood pressure, and perceived exertion were similar between protocols.
  • The ramped Bruce protocol resulted in significantly longer test durations and higher METs (10.01 min, 11.4 METs) compared to the standard Bruce protocol (8:25 min, 9.6 METs).
  • Patients reported significantly greater comfort and ease with the ramped protocol (4.1/5) versus the standard protocol (2.5/5).

Conclusions:

  • A ramped Bruce protocol achieves comparable hemodynamic stress to the standard protocol.
  • The ramped protocol enhances test duration and patient comfort, suggesting it as a favorable alternative.
  • Exercise data from the ramped protocol can be readily correlated with established data from the standard Bruce protocol.