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(A) Correlation between z-scores of the 1-min STST and 6MWT and (B) corresponding Bland Altman plot. The solid line represents the mean difference of the methods (mean bias) and the dashed lines indicate the upper and lower limit of agreement. Filled circles represent individual measurements. Abbreviations. 1-min STST = one-minute sit-to-stand test; STST = sit-to-stand test; 6MWT = six-minute walk test.
