Clinical Exercise Physiology and Chronic Disease
The Clinical Exercise Physiology and Chronic Disease domain tests exercise safety and prescription across cardiovascular, pulmonary, metabolic, renal, musculoskeletal, and cancer populations. The exam expects you to know contraindications, monitoring parameters, and disease-specific adaptations rather than generic “exercise is good” statements.
Core rules
- Cardiac rehabilitation: exercise reduces mortality and improves function after MI, revascularization, and in stable heart failure. Monitor symptoms, BP, HR, ECG where indicated, and RPE. Avoid heavy isometric loads and Valsalva in clients with poor ventricular function or uncontrolled hypertension.
- Heart failure: interval and moderate continuous aerobic training are used; supervise early sessions; watch for disproportionate dyspnea, fatigue, weight gain, and arrhythmia.
- COPD: pulmonary rehabilitation improves dyspnea and exercise tolerance. Pursed-lip breathing and energy conservation help. Titrate supplemental O2 to keep SpO2 approximately 88–90% during exercise; do not withhold oxygen that is needed to permit activity.
- Diabetes: exercise improves insulin sensitivity. Insulin and sulfonylureas raise hypoglycemia risk; check glucose before, during, and after exercise and carry fast carbohydrate. Avoid vigorous exercise with ketones or marked hyperglycemia.
- Hypertension: avoid breath-holding and Valsalva; exercise is adjunct therapy. Uncontrolled severe hypertension is a reason to defer vigorous exercise and refer.
- Osteoporosis and cancer: emphasize fall prevention, safe loading, and fatigue management; modify contact and high-impact activity when fracture risk is high.
Worked example
A client with COPD walks on a treadmill and SpO2 falls from 94% to 85%. The correct response is to stop, reposition, and administer supplemental oxygen titrated to maintain SpO2 at about 88–90%, then resume at a lower intensity if stable. Sending the client home without correction or continuing at the same intensity ignores hypoxemia. The reasoning is that the target range preserves oxygen delivery while avoiding unnecessary high FiO2.
Traps
- Believing exercise is contraindicated in stable heart failure or COPD; supervised training is recommended.
- Missing hypoglycemia risk in a client on insulin.
- Using HR alone in a client on beta-blockers.
- Ignoring Valsalva during resistance training.
- Treating SpO2 <90% as acceptable during exercise.
- Failing to refer for uncontrolled symptoms or BP.