The purpose of this study was to evaluate the validity of the predicted VO2 max from the Astrand-Ryhming nomogram, using the cycle ergometer as the sole exercise mode and following the recommended submaximal test protocol. In addition, two sets of age correction factors were compared for accuracy. Using the Astrand age correction factors, the SEE of the predicted VO2 max for the 40 male subjects was .42 L.min-1 or 5.7 ml.kg-1.min-1, (r = .76 and .83, respectively); there was no significant difference between the measured and the predicted means. Although virtually identical SEE and r were found when applying the von Dobeln age correction factors, a significantly lower predicted mean was found (p less than .05), which indicated a consistent tendency to underestimate the actual VO2 max. These results suggest that the Astrand age correction factors should be used in conjunction with the Astrand-Ryhming nomogram, especially when classifying subjects into various fitness classifications.
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