Enright and Sherrill developed equations for predicting the six-minute walking distance (6MWD) in healthy adults. The authors are from the University of Arizona in Tuscon.
Patient selection: healthy adults from age 40 to 80 years
Conditions: 100 foot hallway (30.49 meters)
Parameters:
(1) age in years
(2) gender
(3) body mass index (BMI) in kg per square meter
(4) height in centimeters
6MWD for male in meters=
= (7.57 * (height)) - (5.02 * (age)) - (1.76 * (weight)) - 309
6MWD for female in meters=
= (2.11 * (height)) - (5.78 * (age)) - (2.29 * (weight)) + 667
If BMI available:
6MWD for male in meters=
= 1140 - (6.94 * (age)) - (5.61 * (BMI))
6MWD for female in meters=
= 1017 - (5.83 * (age)) - (6.24 * (BMI))
The lower limit of normal:
LLN for male =
= (calculated 6MWD) - 153
LLN for male =
= (calculated 6MWD) - 130
