Related Experiment Video
Updated: Jul 15, 2025
07:26
Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
Published on: October 17, 2018
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Symptom-limited exercise capacity is associated with long-term survival
Wei-Ming Huang1,2,3,4,5, Hao-Chih Chang2,6, Chiao-Nan Chen7
1Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
Medicine
|September 29, 2023
Summary
Exercise capacity, measured by peak metabolic equivalents (METs) during treadmill exercise testing (TET), independently predicts long-term cardiovascular and all-cause mortality across diverse patient groups and comorbidities.
Area of Science:
- Cardiology
- Preventive Medicine
- Exercise Physiology
Background:
- Exercise capacity is a known prognostic indicator in patients with existing cardiovascular diseases.
- Its independent predictive value across a spectrum of comorbidities requires further evaluation.
Purpose of the Study:
- To assess the independence of exercise capacity, determined via treadmill exercise test (TET), in predicting long-term cardiovascular and all-cause mortality.
- To investigate the prognostic influence of peak exercise capacity across various subgroups and comorbidities.
Main Methods:
- A cohort of 18,954 participants referred for symptom-limited TET was analyzed.
- Peak metabolic equivalents (METs) were recorded.
- Long-term outcomes (cardiovascular and all-cause mortality) were tracked via the National Death Registry.
Main Results:
- Lower peak METs were associated with older age, poorer renal function, lower hemoglobin, and more comorbidities.
- Peak METs significantly predicted both cardiovascular death (HR 0.788) and all-cause mortality (HR 0.835).
- Prognostic influence was consistent across subgroups, including those with comorbidities, and was particularly strong in younger individuals or those with exercise-induced ischemia.
Conclusions:
- Exercise capacity measured by peak METs during TET is a robust, independent predictor of long-term mortality.
- Its prognostic value is universal, observed across diverse patient populations and comorbidities.
- Fitness level offers significant insights into long-term survival, with varying predictive strength based on patient characteristics.
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