Date of Award
Master of Arts
Health, Physical Education, and Recreation (to 2011)
Dr. Roger Zabik
Dr. Mary Dawson
Dr. Patricia Frye
Masters Thesis-Open Access
This study examined the R value at VO2 max during maximal graded treadmill exercise tests to determine if it was a reliable indicator of VO2 max and could therefore be used as a test termination criterion. The subjects in this study were 160 coronary artery diseased (CAD) patients and 170 nondiseased individuals. Data were collected from existing stress test records. The R value was also analyzed to determine if proportions of diseased and nondiseased subjects were the same. The time it took 100 CAD patients to reach VO2 max and exhaustion once R rose above 1.00 was also examined.
The findings from this study indicated that (a) the R value was not a reliable predictor of VO2 max between the values of 1.10 and 1.20, (b) the R values of the diseased and nondiseased populations were comparable, and (c) the mean additional time spent on the treadmill past VO2 max was not practically significant.
Williams, Sherry S., "The R Value at VO2 Max during Maximal Graded Exercise Treadmill Tests of Coronary Artery Diseased and Nondiseased Subjects" (1992). Master's Theses. 840.