RESUMO
Cardiac troponins T and I are sensitive biomarkers often associated with acute coronary syndrome but can also be elevated after intense exercise, posing diagnostic challenges. We present the case of a 42-year-old male cyclist who complained of chest pain during exercise with elevated troponin levels. A comprehensive evaluation ruled out cardiac pathology but revealed acid reflux. Excessive cycling posture exacerbates reflux, likely contributing to chest pain and troponin elevation. This case underscores the importance of considering alternative etiologies in athletes with chest pain and elevated troponin levels after extreme exertion. It also highlights the role of antireflux therapy and activity modification in managing such cases. Further research is needed to elucidate the long-term cardiac effects of exercise-induced troponin elevation, although this is currently considered a reversible physiological phenomenon.