Estimation of Maximal Work Rate Based on the 6-Minute Walk Test and Fat-Free Mass in Chronic Obstructive Pulmonary Disease  Vinícius Cavalheri, PT, Nídia Aparecida Hernandes, PT, Carlos Augusto Camillo, PT, Vanessa Suziane Probst, PhD, Dionei Ramos, PhD, Fábio Pitta, PhD  Archives of Physical Medicine and Rehabilitation  Volume 91, Issue 10, Pages 1626-1628 (October 2010) DOI: 10.1016/j.apmr.2010.07.002 Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 1 (A) Bland-Altman analysis of the predictive equation for Wmax achieved in an incremental cycle ergometry test based on the product of the 6MWT and FFM. The horizontal dotted line indicating the difference between the equations is hidden below the solid line, indicating a difference equal to 0 between these equations. (B) Bland-Altman analysis of the predictive equation for Wmax achieved in an incremental cycle ergometry test based on the product of 6MWT and BW (ie, 6-minute walk work). The overestimation of this equation was negatively correlated to Wmax (r=−.57, P<.0001). Archives of Physical Medicine and Rehabilitation 2010 91, 1626-1628DOI: (10.1016/j.apmr.2010.07.002) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions