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Figure 2 | BMC Musculoskeletal Disorders

Figure 2

From: Criterion validation of two submaximal aerobic fitness tests, the self-monitoring Fox-walk test and the Åstrand cycle test in people with rheumatoid arthritis

Figure 2

Bland and Altman plots of measured and estimated maximal oxygen uptake (VO 2max ). Differences of VO2max in l/min (left) and ml · kg−1 · min−1 (right) between the Fox-walk test and the measured VO2max test, plotted against the mean of VO2max of these two tests (A-B). Differences of VO2max in l/min (left) and ml · kg−1 · min−1 (right) between the Åstrand test and the measured VO2max test, plotted against the mean of the VO2max of these two tests. The estimated VO2max with the Åstrand test is corrected for age (C-D) and assessed maximal heart rate (E-F), respectively. The plotted lines in the figures show the 95% limits of agreement (n = 27).

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