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ABC
Editorial

Mindset Shift in Coronary Artery Disease: Reflections Triggered by the Diamond Anniversary of the Bruce Protocol

Nuno Bettencourt et al. Eduardo Vilela António Miguel Ferreira

From classical ECG exercise testing to modern modalities

The ECG exercise test, introduced several decades ago and whose most visible face was evolved to what would become the Bruce protocol, was a paradigm shift in CAD evaluation.It provided a non-invasive means to assess the heart’s response to physical stress, offering valuable insights into aspects like ischemic changes and arrhythmias. , The simplicity of this method, coupled with the provision of data on different components of the cardiovascular response, led to its widespread adoption.However, the evolving landscape of medical technology has introduced alternative methods such as stress echocardiography and nuclear imaging and, more recently, ancillary advanced imaging techniques such as cardiac magnetic resonance imaging and computed tomography angiography (CTA). , , Slowly but steadily these techniques have prevailed in several scenarios, and current guidelines reserve a somewhat secondary role for ECG exercise testing in the diagnosis of CAD. Meanwhile, they highlight its value in a plethora of other clinical contexts, namely in terms of assessment of functional capacity, symptoms, heart rhythm and conduction disturbances, exercise prescription, and sports cardiology. , , ,

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  • Atherosclerotic Burden
  • Bruce Protocol
  • Coronary CT
  • Ischemia Testing
  • treadmill test
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Creative Commons Attribution (CC BY) Creative Commons license
24/11/2023 DOI: 10.36660/abc.20230638 Views 1
ABC
Original Article

A new proposal to guide velocity and inclination in the ramp protocol for the treadmill ergometer

Odwaldo Barbosa e Silva et al. Dário C. Sobral Filho

OBJECTIVE: To suggest criteria to guide protocol prescription in ramp treadmill testing, according to sex and age, based on velocity, inclination, and max VO2 reached by the population studied. METHODS: Prospective study describing heart rate (HR), time, velocity, inclination, and VO2 estimated at maximum effort of 1840 individuals from 4 to 79 years old, who performed a treadmill test (TT) according to the ramp protocol. A paired Student t test was used to assess the difference between predicted and reached max VO2, calculated according to the formulas of the “American College of Sports Medicine”. RESULTS: Submaximal HR was surpassed in 90.1% of the examinations, with a mean time of 10.0±2.0 minute. Initial and peak inclination velocity of the exercise and max VO2 were inversely proportional to age and were greater in male patients. Predicted Max VO2 was significantly lower than that reached in all patients, except for female children and adolescents (age < 20 years old). CONCLUSION: Use of velocity, inclination, and maximum VO2 actually reached, as a criterion in prescribing the ramp protocol may help in the performance of exercise in treadmill testing. The ramp protocol was well accepted in all age groups and sexes with exercise time within the programmed 8 to 12 minutes.

  • Exercise Tolerance
  • ramp protocol
  • treadmill test
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Creative Commons Attribution (CC BY) Creative Commons license
05/08/2003 DOI: 10.1590/S0066-782X2003000900004

How to cite this article

EndNote RIS

Electronic Document Format (Vancouver)

Bettencourt N, Vilela E, Ferreira AM. Mindset Shift in Coronary Artery Disease: Reflections Triggered by the Diamond Anniversary of the Bruce Protocol. Arquivos Brasileiros de Cardiologia 2023;120(10):e20230638.

Electronic Document Format (ABNT)

Bettencourt, Nuno; Vilela, Eduardo; Ferreira, António Miguel. Mindset Shift in Coronary Artery Disease: Reflections Triggered by the Diamond Anniversary of the Bruce Protocol. Arquivos Brasileiros de Cardiologia, v. 120, n. 10, e20230638, Nov. 2023.

Electronic Document Format (APA)

Bettencourt, N., Vilela, E., & Ferreira, A. M. (2023). Mindset Shift in Coronary Artery Disease: Reflections Triggered by the Diamond Anniversary of the Bruce Protocol. Arquivos Brasileiros de Cardiologia, 120(10), e20230638.

Electronic Document Format (ISO)

Bettencourt, Nuno and Vilela, Eduardo and Ferreira, António Miguel. Mindset Shift in Coronary Artery Disease: Reflections Triggered by the Diamond Anniversary of the Bruce Protocol. Arquivos Brasileiros de Cardiologia [online]. 2023, vol. 120, n. 10, [cited 2026-10-14], e20230638. Available from: <https://journals.cardiol.br/en/article/mindset-shift-in-coronary-artery-disease-reflections-triggered-by-the-diamond-anniversary-of-the-bruce-protocol/>. ISSN 0066-782X

EndNote RIS

Electronic Document Format (Vancouver)

Silva OB, Sobral Filho DC. A new proposal to guide velocity and inclination in the ramp protocol for the treadmill ergometer. Arquivos Brasileiros de Cardiologia 2003;81(1):48-53.

Electronic Document Format (ABNT)

Silva, Odwaldo Barbosa e; Sobral Filho, Dário C.. A new proposal to guide velocity and inclination in the ramp protocol for the treadmill ergometer. Arquivos Brasileiros de Cardiologia, v. 81, n. 1, p. 48-53, Aug. 2003.

Electronic Document Format (APA)

Silva, O. B. , & Sobral Filho, D. C. (2003). A new proposal to guide velocity and inclination in the ramp protocol for the treadmill ergometer. Arquivos Brasileiros de Cardiologia, 81(1), 48-53.

Electronic Document Format (ISO)

Silva, Odwaldo Barbosa e and Sobral Filho, Dário C.. A new proposal to guide velocity and inclination in the ramp protocol for the treadmill ergometer. Arquivos Brasileiros de Cardiologia [online]. 2003, vol. 81, n. 1, [cited 2026-10-14], pp. 48-53. Available from: <https://journals.cardiol.br/en/article/a-new-proposal-to-guide-velocity-and-inclination-in-the-ramp-protocol-for-the-treadmill-ergometer/>. ISSN 0066-782X

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