Repeated Six-Minute Walk Tests for Outcome Measurement and Exercise Prescription in Outpatient Cardiac Rehabilitation: A Longitudinal Study  R. Nicole.

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Repeated Six-Minute Walk Tests for Outcome Measurement and Exercise Prescription in Outpatient Cardiac Rehabilitation: A Longitudinal Study  R. Nicole Bellet, BPhty, MPH, Rebecca L. Francis, BPhty, Justin S. Jacob, BPhty, MPhty, Karen M. Healy, BNurs, PostGrad DipHealth Sci, Harold J. Bartlett, BSc, PhD, Lewis Adams, BSc, PhD, Norman R. Morris, BAppSc(Physio), PhD  Archives of Physical Medicine and Rehabilitation  Volume 92, Issue 9, Pages 1388-1394 (September 2011) DOI: 10.1016/j.apmr.2011.04.014 Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

Figure 1 Patient flow through the study. Note that subjects in the pale grey cell and second dark grey cell reentered the study for the 6-month review. Data were not collected for subjects in dark grey cells. Archives of Physical Medicine and Rehabilitation 2011 92, 1388-1394DOI: (10.1016/j.apmr.2011.04.014) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

Figure 2 Average 6MWDs for 6MWT1 (black) and 6MWT2 (grey) at CR start, postcompletion, and 6 months postcompletion of a 6-week CR program for the entire sample. The mean predicted value at CR start for healthy adults with the same height, weight, and sex is shown with a dashed line (–– –) at 529m. A significant difference was noted between mean values for 6MWD1 and 6MWD2 at each assessment point (P<.001 using Holm-Sidak pairwise multiple comparison method after 2-factor repeated-measures analysis of variance) to assess mean values. Archives of Physical Medicine and Rehabilitation 2011 92, 1388-1394DOI: (10.1016/j.apmr.2011.04.014) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

Figure 3 Comparison of 6MWDs for 6MWT1 and 6MWT2 for subjects with complete 6MWD data for all times (n=33): (A) scatterplot and (B) Bland-Altman plot. 6MWD is represented by closed circle at CR start, open circle postcompletion, and closed triangle at 6 months postcompletion of the CR program. (A) Unbroken line (−) represents the linear regression line; the equation is 6MWD2=(1.08×6MWD1)−27.47, with the intercept on the y axis at 352.7m. ICC=0.93 (95% CI, .90–.95). (B) Dotted line (…) represents bias (15.8±28m) and broken lines (- -) represent 95% limits of agreement (−39.9 to 70.6m). Pearson correlation coefficient, r=.37. Archives of Physical Medicine and Rehabilitation 2011 92, 1388-1394DOI: (10.1016/j.apmr.2011.04.014) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions