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Related Experiment Videos

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

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.

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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.

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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.