Protocol - Cardiorespiratory Fitness - Exercise Test Estimate - One Mile Walk
The participant is asked to complete a one-mile walk test as quickly as possible on a track. The participant should walk briskly at a steady pace that can be maintained for the entire mile. A technician utilizes a stopwatch to time the walk. The participant wears a heart-rate (HR) monitor that records HR continuously through the test. After the test is completed, the technician records the HR from the last 10 seconds of the test. In addition, the participant’s age, sex, and body weight are needed to complete an equation to determine maximal oxygen consumption (VO2 max).
A heart-rate (HR) monitor (e.g., Polar® HR monitor) should be used because the HR that is used in the equation is taken during the last 10 seconds of the test and not after the test is completed (HR will decline rapidly after test is completed). If HR is taken after the test is completed, this will introduce error to the prediction of VO2 max.
Ideally, the HR monitor must store HR so the technician can easily access the results after the test is completed. If not, the participant can read the HR to the technician in the last 10 seconds of the test, directly from the receiver. The manufacturer’s user manual should be followed for proper calibration and usage.
The participant should complete a screening instrument such as the PAR-Q+ (Physical Activity Readiness Questionnaire for Everyone, The Canadian Society for Exercise Physiology) prior to the one-mile walk to make certain he or she is physically capable of performing the walk. If the person is elderly or in poor health, a physician’s examination and approval is preferable prior to the test.
Notes from the Expert Review Panel:
The protocol indicates that the participant should walk "as quickly as possible," but it would be preferable to have him or her "walk briskly at a steady pace" for the entire mile. Polar® is a trademark of Polar Electro Oy.
Track or pre-measured one-mile distance
Note: if a track is not used, the location where the timed walk takes place must be flat and pre-measured to equal 1 mile.
First, obtain the participant’s weight in pounds via a reliable scale, and also record his/her sex, and current age. Secure the HR monitor chest strap and watch to the participant. Explain that you will time the participant as he/she walks briskly for one-mile.
Once the participant is ready at the starting line, say "go" and start the stopwatch. Time the participant until s/he completes the entire 1 mile walk. Record the time in minutes and seconds and then convert to seconds [(minutes x 60) + seconds].
Insert the person’s weight, age, sex, time, and HR into the following scoring equation to determine VO2max (maximal oxygen consumption).
VO2max = 6.9652 + (0.0091 * WEIGHT) - (0.0257 * AGE) + (0.5995 * SEX1) - (0.2240 * TIME) - (0.0115 * HEART RATE)
1 Male = 1, Female = 0
Units of VO2max are liters of oxygen per minute (l/min)
Protocol Name from Source:
Personnel and Training Required
A technician who has been trained in monitoring a walk test and in properly recording the data.
One-mile track or pre-measured flat walking area. A heart-rate (HR) monitor with chest strap and wrist receiver that stores HR data is recommended.
|Specialized requirements for biospecimen collection||No|
|Average time of greater than 15 minutes in an unaffected individual||No|
Mode of Administration
Ages 20 to 69
While the validation of the one-mile walk test was conducted in middle aged and elderly adults, the PhenX Working Group recommends that the protocol can be used with participants as young as 20 years of age and with older age groups, provided that a physician approves the test in frail or medically compromised study participants.
This is a standard assessment of aerobic capacity that has been widely utilized for the past two decades. It is low burden for healthy participants and relatively easy for a technician to administer.
|Common Data Elements (CDE)||Person Cardiorespiratory Fitness One Mile Walking Test Estimate Text||3060845||CDE Browser|
|Logical Observation Identifiers Names and Codes (LOINC)||Cardioresp fitness 1 mi walk proto||62814-9||LOINC|
Process and Review
The Expert Review Panel #1 reviewed the measures in the Anthropometrics, Diabetes, Physical Activity and Physical Fitness, and Nutrition and Dietary Supplements domains.
Guidance from the ERP includes:
Revised descriptions of measure
Back-compatible: no changes to Data Dictionary
Previous version in Toolkit archive (link)
Kline, G., Porcari, J., Hintermeister, R., Freedson, P. S., Ward, A., McCarron, R. F., Ross, J., & Rippe, J. M. (1987). Estimation of VO2max from a one-mile track walk, gender, age, and body weight. Medicine and Science in Sports and Exercise, 19, 253-259.
Physical Activity Readiness Questionnaire for Everyone (PAR-Q+) © 2011. Used with permission from the Canadian Society for Exercise Physiology.
|Variable Name||Variable ID||Variable Description||Version||dbGaP Mapping|
|PX150101_Heart_Rate||PX150101040000||Participant's heart rate during the last 10 minutes of the walk as shown on heart rate monitor||4||N/A|
|PX150101_Time_To_Complete_Walk_Minutes||PX150101050100||Time to complete entire 1 mile walk||4||Variable Mapping|
|PX150101_Time_To_Complete_Walk_Seconds||PX150101050200||Time to complete entire 1 mile walk||4||Variable Mapping|
|PX150101_Weight||PX150101010000||Participant's weight||4||Variable Mapping|
Cardiorespiratory Fitness - Exercise Test Estimate
October 1, 2015
A measure to estimate maximal oxygen consumption (VO2 max).
Aerobic capacity (VO2 max) is the best indicator of a person’s cardiovascular fitness and aerobic endurance. Low VO2 max has been associated with cardiovascular disease.
Physical Activity and Physical Fitness, V02 max, aerobic capacity, walk