Clinical Exercise Physiology Knowledge and Skills
Core concepts
Know normal cardiovascular, pulmonary, and metabolic responses to acute exercise and how chronic disease alters them: heart rate and stroke volume responses, the rate-pressure product (RPP = SBP × HR) as a myocardial oxygen-demand index, ventilatory thresholds, and substrate use. Understand resting and exercise ECG basics - rate, rhythm, axis, intervals, ST-segment changes, and which findings (e.g., significant ST depression, ventricular dysrhythmias, exertional hypotension) are test-termination or physician-consult triggers. Be able to interpret common clinical labs and measures: lipid panel, HbA1c, fasting glucose, BNP, spirometry (FEV1/FVC ratio, obstructive vs restrictive patterns), and pulse oximetry.
Traps
Questions often test the direction of a response: systolic BP normally rises with exercise while diastolic stays flat or falls slightly; a drop in systolic BP with increasing workload is abnormal. Distinguish absolute from relative contraindications to exercise testing. Do not confuse chronotropic incompetence with poor effort. Remember that beta-blockers blunt heart rate and can reduce the sensitivity of HR-based endpoints, so perceived exertion and other signs matter more.
Rule of thumb
For the rate-pressure product, a rough ceiling often used in clinical testing is an RPP around 20,000–25,000 mmHg·bpm; approaching it signals high myocardial demand. Worked example: HR 140 bpm and SBP 160 mmHg gives RPP = 22,400 - near that ceiling, so note it and monitor for ischemic signs.
Skills to practice
Interpreting a 12-lead report in plain language, calculating BMI and waist-to-hip ratio, converting METs to oxygen consumption (1 MET ≈ 3.5 mL·kg⁻¹·min⁻¹), and recognizing when findings require escalation.