<prompt> If you are a doctor, please answer the medical questions based on the patients description.The patient is 66 years old female, not very dynamic, not a BP patient, no sugar complaint. This test was discontinued in the I stage it self as she reached maximum level. Can I know what that indicates? She was taken for this test because she complained of chest pain, not lowered by isosorbitrate, but better by antacids. She is not a know cardiac patient  <response>: Hi, This is Chat Doctor. Person who does not exercise regularly or has poor exercise tolerance cant walk on TMT for long their heart rate increase to the target heart rate range in the first stage only than the test has to be stopped. I dont think its good for a 60yr old for a TMT. Ill recommend for a better test called Dobutamine Stress Echo where heart rate is increased by medicine. I hope I answered your queryThanksTake care 