How do you calculate METs on treadmill stress test?

How do you calculate METs on treadmill stress test?

METs may be calculated by dividing oxygen uptake per minute with the product of 3.5 × bodyweight (kilograms).

What does METs mean on stress test?

Exercise capacity measured in metabolic equivalents (METS) alone is a powerful predictor of cardiovascular events (6). Higher workloads achieved during exercise stress predict improved survival rates, irrespective of age and gender (6-8).

What is METs in TMT test?

Exercise capacity is reported in terms of estimated metabolic equivalents of task (METs). The MET unit reflects the resting volume oxygen consumption per minute (VO2) for a 70-kg, 40-year-old man, with 1 MET equivalent to 3.5 mL/min/kg of body weight.

What is METs in Bruce protocol?

In the standard Bruce protocol, the starting point (ie, stage 1) is 1.7 mph at a 10% grade (5 METs). Stage 2 is 2.5 mph at a 12% grade (7 METs). Stage 3 is 3.4 mph at a 14% grade (9 METs). This protocol includes 3-minute periods to allow achievement of a steady state before workload is increased.

What is a good METs score?

Any score below 7 should trigger concern. A score of 10 is good. Some occupations, such as firefighting, are best performed by those with a MET score of 12 or higher. If you are not happy with your MET score, your doctor can help you figure out how to improve your exercise habits.

How do I calculate my METs?

The formula to use is: METs x 3.5 x (your body weight in kilograms) / 200 = calories burned per minute. For example, say you weigh 160 pounds (approximately 73 kg) and you play singles tennis, which has a MET value of 8. The formula would work as follows: 8 x 3.5 x 73 / 200 = 10.2 calories per minute.

What is a bad METs score for a stress test?

Exercise capacity is based on metabolic equivalents (MET) achieved, (one MET is defined as 3.5 mL O2 uptake/kg per min, which is the resting oxygen uptake in a sitting position). Less than 5 METS is poor, 5–8 METS is fair, 9–11 METS is good, and 12 METS or more is excellent.

What is a good MET level?

A healthy 50-year-old man should have a capacity of at least 9.2 METs; a healthy 50-year-old woman should clock in at 8.2 METs or higher, according to a recent study on women’s fitness in the New England Journal of Medicine. For men age 20, 13.5 METs; age 30, 11.4 METs; age 40, 10.3 METs.

What is a good Mets score?

How accurate is the Bruce treadmill test?

Data gathered from each protocol demonstrated that the usage of the ramped Bruce protocol achieved more consistent results in comparison across all BMI groups in achieving 80%–85% of their age-predicted maximum heart rate.

How do you read treadmill results?

Possible Conclusions

1. Positive or abnormal: Doctors may conclude the stress test is positive for cardiac ischemia—meaning the heart muscle wasn’t getting adequate oxygenated blood during the stress.
2. Negative or normal: A negative test result lacks any of the things that could trigger a positive conclusion.

How does the Bruce Treadmill test protocol work?

The Standard Bruce exercise test protocol requires a change in speed and grade every 3 minutes. The incremental increases of work are 2-3 Metabolic Workloads (METs) greater for each stage. The test begins with a 10% incline/grade and 1.7mph pace. After 3 minutes, the grade increases to 12% and the speed to 2.5mph.

What are the steps in the Modified Bruce Protocol?

Modified Bruce Protocol. Standard Bruce protocol for treadmill exercise test has 7 three minute stages. First stage starts at a speed of 1.7 miles per hour (mph) and a gradient of 10%. Each subsequent stage has an increment of 0.7 to 0.8 mph in speed and 2% in gradient. Modified Bruce protocol starts with a speed of 1.7 mph and a gradient of 0%.

What is VO2 max for Bruce Protocol Mets?

VO2_max = METs_max * 3.5 For elderly or frail patients, a modified Bruce protocol METs exists. The modified Bruce protocol stress test adds a stage 0 and 1/2 at the beginning. They are performed at 1.7 mph (2.7 km/h) and 0% and 5% treadmill inclination.

What are the grades for the Modified Bruce Test?

The fist two stages of the Modified Bruce Test are performed at a 1.7 mph and 0% grade and 1.7 mph and 5% grade, and the third stage corresponds to the first stage of the Standard Bruce Test protocol as listed above.