Related Experiment Video
Updated: Jul 11, 2026

Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
Published on: October 17, 2018
Sudden death due to recreational exercise in physicians
Z Duraković1, M Misigoj-Duraković, J Skavić
1Department of Internal Medicine, University Hospital Center Zagreb, Zagreb, Croatia.
Sudden cardiac deaths during exercise are linked to underlying coronary heart disease. Pre-exercise medical evaluations are crucial for identifying risks and preventing fatalities in physicians and the general population.
Area of Science:
- Cardiology
- Sports Medicine
- Public Health
Background:
- Sudden cardiac death during recreational physical exercise is a concern, particularly among middle-aged individuals.
- Physicians, despite potential health awareness, are not immune to these risks.
- Coronary heart disease was identified as a common underlying factor in autopsied cases.
Purpose of the Study:
- To investigate the incidence and causes of sudden cardiac death among Croatian male physicians during or after recreational physical exercise.
- To highlight the importance of pre-exercise medical evaluations and risk factor assessment.
Main Methods:
- Retrospective analysis of sudden cardiac death cases among Croatian male physicians between 1982 and 2002.
- Review of autopsy findings, medical records, and lifestyle factors (smoking, alcohol use).
- Calculation of sudden death rates within the physician population and the general population engaged in physical activity.
Main Results:
- Five cases of sudden cardiac death were observed in Croatian male physicians aged 34-67 during or after recreational exercise.
- Autopsied cases revealed coronary heart disease, including stenosis and occlusion of the left descending anterior artery, and myocardial scars.
- Two non-autopsied cases were suspected of alcohol cardiomyopathy, with both individuals being smokers.
Conclusions:
- Underlying coronary heart disease is a significant factor in sudden cardiac death during physical activity.
- Comprehensive medical evaluations, including clinical examination, risk factor assessment, ECG, and stress testing, are essential before initiating recreational exercise.
- Gradual intensity exercise, not exceeding 6 METs, is recommended for untrained individuals and the elderly to mitigate risks.
More Related Videos
Related Concept Videos
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be met...
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Coronary Artery Disease III: Clinical Manifestations
Cardiopulmonary Resuscitation III: AED Use
Peripheral Artery Disease I: Introduction

