Re: metabolic equivalent unit (mets) formula

[George__0__0]

Posted By George on August 07, 1999 at 20:01:26PHi,                                                       In july I had a stress test on bruce protocol treadmill.Doctor gave me all test results except for the mets.These are the results of the treadmill bruce stress test.                                                     Event     Time     Speed     Grade     HR     BP          rest                                   99     144/80      stage 1   3:00     1.7       10        121    160/80      stage 2   3:00     2.5       12        136                stage 3   3:00     3.4       14        154    182/82      stage 4   3:00     4.2       16        168                stage 5   2:34     5.0       18        185                stop ex. 14.34                                            Interpretation: The patient exercised for 14.34 minutes on a standard Bruce protocol and stopped because of fatigue.The HR rose to 185 beats and the BP rose to 182/82.He denied any chest discomfort.There were no significant ST segment change.Summary 1.Negative exercise EKG 2.Excellent exercise capacity.                        According to the above stress test results, how many METS did I achieve? What is the formula for METS in stress testing?Thank you.George                                  By away I am 35 years old male weigh 166 pounds and 5'11 feet tall.PPHR WIDTH=75% SIZE=4 COLOR=#000090

[CF-CARDIO-MD-JMF]

Posted By CCF CARDIO MD JMF on August 08, 1999 at 14:57:36PbrDear Gerge,pMETS or metabolic equivalents are estimated by the work load estimated at 14 minutes of a  standard bruce protocol in your case.  p1 MET is equivalent to 3.5 ml of oxygen per kilogram body weight per minute.  14 minutes into a bruce protocol, you are walking 5.0 mph on an 18 % grade this is the equivalent of 16 - 17 mets.  or about 60 ml/kg/min of oxygen consumption.  In general, we do not ask people to exercise at more than 5 mets for cardiovascular benefit.pSound like you're in great shape!  Keep up the good work!ppI hope this has been usef

[George__0__0]

Posted By George on August 09, 1999 at 17:07:28

A four months ago (April) I had another Bruce protocol stress test. These are the results.AGE 35; WEIGHT 74.5 KG; EX.MODE TM; BRUCE PROTOCOL; STAGE 6; 15:08 MINUTES; PEAK EXERCISE LOAD 5.5 MPH/20 %; PEAK H.R.: PREDICTED/ACHIEVED/%PRED. 185/186/100; REST BP 110/80; PEAK EX.BP 176/80; TEST TERMINATED BECAUSE OF FATIGUE. IMPRESSIONS: NO ST's.NORMAL BP RESPONSE.GOOD WORK CAPACITY. NORMAL GXT.                                                                                                             According to the above test results how many mets did I achieve? And if a mets are estimated and not calculated, how are they estimated?Thank you. George

[CF-CARDIO-MD-JMF]

Posted By CCF CARDIO MD JMF on August 11, 1999 at 11:46:08
Dear George,
As stated before, METS have been established using patients undergoing metabolic studies to determine the average oxygen consumption for a given activity.  We use METS to estimate the work load of an average person doing a treadmaill and after testing hundreds of people undergoing treadmill testing with an additional metabolic study where they were an oxygen mask and inspired Oxygen and exhaled Co2 are measured METS are determined.  These average values are used to estimate your mets.
Your older test again show that you are capable of approximately 16-17 METS based on completing approximately 15 minutes of exercise on a standard Bruce.
I hope this has been useful. I wish you the best of luck. Feel free to write back.
     Information provided here is for general purposes only. Specific questions should be addressed to your own
     doctor. If you would like to make an appointment at the Cleveland Clinic Heart Center, please call
     1-800-CCF-CARE or inquire online by using the Heart Center website at www.ccf.org/heartcenter. The Heart
     Center website contains a directory of the cardiology staff that can be used to select the physician best suited to
     address your cardiac problem.










Follow Ups:


metabolic equivalent unit (mets) formula George 8/11/1999
(2)

Re: metabolic equivalent unit (mets) formula CCF CARDIO MD JMF 8/17/1999
(1)

metabolic equivalent unit (mets) formula George 8/18/1999
(0)