Test Your Knowledge on METs

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Questions and Answers

Which equation correctly represents the calculation of one MET in terms of oxygen consumption?

  • 1 MET = 3.5 ml/min
  • 1 MET = 200 ml/min for women
  • 1 MET = 250 ml/min for men
  • 1 MET = 3.5 ml/kg/min (correct)

What is considered light physical activity in terms of METs?

  • More than 6 METs
  • Less than 3 METs (correct)
  • Between 3 and 6 METs
  • Exactly 3 METs

Which equation correctly represents the calculation of VO2reserve?

  • VO2reserve = VO2act - VO2rest (correct)
  • VO2reserve = VO2max - VO2rest
  • VO2reserve = VO2act / VO2rest
  • VO2reserve = VO2max / VO2rest

Which equation correctly represents the calculation of heart rate reserve (HR Reserve)?

<p>HR Reserve = HR max - HR rest (C)</p> Signup and view all the answers

Which equation correctly represents the calculation of exercise intensity using the % HR reserve method (Karvonen)?

<p>Intensity = HRactual / HR Reserve (A)</p> Signup and view all the answers

Which equation correctly represents the calculation of exercise capacity using the Bruce protocol?

<p>Exercise Capacity = VO2max (A)</p> Signup and view all the answers

Which type of graded exercise test is considered better for patients with heart disease?

<p>Cycle ergometer (A)</p> Signup and view all the answers

Which test is used to predict VO2max based on age, weight, sex, and time?

<p>Rockport 1 mile fitness walking test (B)</p> Signup and view all the answers

What is the expected response for HR during a submax test?

<p>10+/- 2 bpm per MET (B)</p> Signup and view all the answers

When should a test be stopped based on diastolic blood pressure (DBP)?

<p>DBP &gt; 115 mmHg (D)</p> Signup and view all the answers

What is one indication to stop a test?

<p>Subject wanting to stop (A)</p> Signup and view all the answers

Which test is used to predict VO2max based on distance, weight, age, height, and rate-pressure product?

<p>6 min walk test (C)</p> Signup and view all the answers

What is considered an abnormal recovery for blood pressure?

<p>250 mmHg Diastolic (C)</p> Signup and view all the answers

What is an abnormal peak HR during a test?

<p>Peak HR &gt; 20 bpm below age-predicted max HR (D)</p> Signup and view all the answers

What is the normal response for HR during a submax test?

<p>10+/- 2 bpm per MET (D)</p> Signup and view all the answers

Flashcards

What is 1 MET?

1 MET is equivalent to 3.5 ml/kg/min of oxygen consumption.

Light Physical Activity (METs)

Physical activities that require less than 3 METs are considered light.

VO2reserve Calculation

VO2reserve is calculated by subtracting VO2rest from VO2act.

HR Reserve Calculation

HR Reserve is calculated by subtracting HRrest from HRmax.

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% HR Reserve Method (Karvonen)

Intensity = HRactual / HR Reserve

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Bruce Protocol Exercise Capacity

Exercise capacity in the Bruce protocol equals VO2max.

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Heart Disease Exercise Test

Cycle ergometer tests are better for patients with heart disease.

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Rockport Walking Test

The Rockport 1-mile test predicts VO2max based on age, weight, sex, and time.

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HR Response (Submax Test)

Expected HR response during a submax test is 10 +/- 2 bpm per MET.

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When to Stop Test (DBP)

A test should be stopped if DBP exceeds 115 mmHg.

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One Indication to Stop a Test

Subject wanting to stop.

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6-Minute Walk Test

The 6-minute walk test predicts VO2max using distance, weight, age, height, and rate-pressure product.

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Abnormal Blood Pressure Response

Failure of SBP to rise or a drop >10 mmHg from baseline or abnormal Recovery

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Abnormal Peak HR

Peak HR exceeds 20 bpm below age-predicted max HR

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Normal HR increase

Normal HR increase is 10+/- 2 bpm per MET

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Study Notes

Calculations and Formulas

  • One MET (metabolic equivalent of task) is equivalent to an oxygen consumption of 3.5 mL/kg/min
  • VO2reserve is calculated as VO2max - VO2rest
  • Heart rate reserve (HR Reserve) is calculated as HRmax - HRrest
  • Exercise intensity using the % HR reserve method (Karvonen) is calculated as (HRexercise - HRrest) / (HRmax - HRrest) × 100
  • Exercise capacity using the Bruce protocol is calculated as total exercise time (minutes) × 1.44 + 14.8

Exercise Testing and Intensity

  • Light physical activity is considered to be 1.5-2.4 METs
  • The Bruce protocol is a type of graded exercise test that is better suited for patients with heart disease
  • The Ã…strand test is used to predict VO2max based on age, weight, sex, and time
  • The Rockport test is used to predict VO2max based on distance, weight, age, height, and rate-pressure product

Test Termination and Response

  • A test should be stopped if diastolic blood pressure (DBP) exceeds 120 mmHg
  • One indication to stop a test is if the subject experiences leg pain or cramping
  • The expected response for HR during a submax test is an increase in HR that levels off at a steady-state
  • A normal response for HR during a submax test is an increase in HR that levels off at a steady-state
  • An abnormal recovery for blood pressure is a failure to return to within 10 mmHg of resting value within 5 minutes
  • An abnormal peak HR during a test is less than 85% of the predicted maximum HR

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