Test involves running in three - minute segments on a treadmill . The speed tends to gradually increase along with growing incline . Runners can then plug in their vital statistics into a basic formula . As well as age and gender , the formula factors in peak heart rate . It also looks at how to tolerate stress as measured by ' METs ' and say the formula is more useful than existing stress models .
Test involves running in three-minute segments on a treadmill . The speed needs to gradually increase along with growing incline . Runners can then plug in their vital statistics into a basic formula . As well as age and gender , the formula factors in peak heart rate . It also looks at ability to tolerate exertion as measured by 'METs ' Scientists say the test is more useful than existing stress exams .