The Treadmill Test (TMT), also called an exercise stress test, records your ECG and blood pressure while you walk on a treadmill at increasing speed and slope. It helps detect blockages in the heart arteries (coronary artery disease) that may not show on a resting ECG.
Why it is done
- Chest pain or breathlessness on exertion
- Screening in people with diabetes, high BP, smoking or family history of heart disease
- Fitness assessment and pre-employment check-ups
- Follow-up after angioplasty or bypass surgery
Preparation
- Light meal 2–3 hours before; avoid heavy food, tea / coffee and smoking.
- Wear comfortable clothes and sports shoes.
- Ask your doctor whether to stop medicines such as beta-blockers before the test.
- Men may need chest hair trimmed for ECG electrodes.
Frequently asked questions about Treadmill Test (TMT)
How long does a TMT take?
The exercise part lasts about 8–12 minutes; allow 30–45 minutes in total including preparation and recovery monitoring.
Is the treadmill test safe?
Yes, when done under supervision. The test is stopped immediately if you develop symptoms or ECG changes.
Page reviewed by the radiology team at Kansal Diagnostic Centre · Updated October 2026