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Oxygen uptake efficiency slope: an index of exercise performance and cardiopulmonary reserve requiring only submaximal exercise

Milton Hollenberg, MD^* and Ira B. Tager, MD, MPH

^* Department of Medicine, University of California, San Francisco and the Department of Veterans Affairs Medical Center, San Francisco, California, USA
Division of Public Health Biology and Epidemiology, School of Public Health, University of California, Berkeley, Berkeley, California, USA. %

View larger version (15K): [in a new window]   Figure 1 The relationship between oxygen uptake and total ventilation during incremental exercise in a healthy 60-year-old man. Linear (top) and semilog (x-axis) plots of the data (bottom) are presented.

View larger version (22K): [in a new window]   Figure 2 Effect of age on Oxygen Uptake Efficiency Slope (OUES) in men (top line) and women (bottom line).

View larger version (18K): [in a new window]   Figure 3 Effect of body surface area on Oxygen Uptake Efficiency Slope (OUES) adjusted for percentage of lean body mass.

View larger version (8K): [in a new window]   Figure 4 Relationship of Oxygen Uptake Efficiency Slope to age in 12 men with congestive heart failure. Solid lines represent the 95% prediction intervals for 419 normal elderly men without cardiovascular disease.