High-sensitivity Troponins after a Standardized 2-hour Treadmill Run

Area of Science:

• Cardiology
• Exercise Physiology
• Biomarkers

Background:

• Investigating cardiac biomarkers after exercise is crucial for understanding physiological responses.
• High-sensitivity troponin T (hsTnT) and troponin I (hsTnI) are key indicators of myocardial injury.

Purpose of the Study:

• To examine changes in hsTnT and hsTnI following a standardized treadmill run.
• To identify correlations between troponin levels and echocardiographic, laboratory, and other parameters.

Main Methods:

• Nineteen trained men completed a 2-hour treadmill run.
• hsTnT and hsTnI concentrations were measured pre-run, and at 60, 120, 180 minutes, and 24 hours post-run.
• Statistical analysis included non-parametric ANOVA and multiple linear regression.

Main Results:

• Statistically significant changes (p<0.0001) were observed in both hsTnT and hsTnI levels post-run.
• Relative left ventricular wall thickness, training volume, post-run body temperature, and creatinine changes explained 60% of the variance in troponin levels.
• The 0h/1h algorithm did not classify any participants as negative for myocardial damage.

Conclusions:

• Relative LV wall thickness, creatinine changes, training volume, and body temperature are predictive of hsTnT and hsTnI level alterations after exercise.
• Testing hsTn levels post-exercise should be reserved for cases with clinical suspicion of myocardial damage.