The purpose of this study was to compare measured , at specific stages with the American College of Sports Medicine-predicted , at the same stage during treadmill walking in older women. Twenty-five women (age range = 56.6 to 78.1 years; mean ± SD = 66.6 ± 5.8 years) walked on a treadmill at a speed of 2.0 mph and 0% grade for the first stage and at increased grades for each subsequent stage. The results showed considerable lack of agreement between the measured and predicted , values. Predicted , was lower than measured , at 0% grade and higher than measured , al 10.2% grade (p < .05 for both). However, predicted , was not significantly different from measured , at grades of 3.4% and 6.7%. These results are generalizable only to older women who can walk 2.0 mph on a treadmill and do not use handrail support. Future research is needed to develop more accurate equations for predicting , for older women.
Joanne Kraenzle Schneider is with Washington University, Department of Internal Medicine, Division of Geriatrics and Gerontology, Campus Box 8113, 660 S. Euclid Ave., St. Louis, MO 63110. Kenneth H. Pitetti is with Wichita State University Department of Health Sciences, Wichita, KS.