Archives of Physical Medicine and Rehabilitation
Volume 89, Issue 9 , Pages 1782-1787 , September 2008

Estimating Maximum Work Rate During Incremental Cycle Ergometry Testing From Six-Minute Walk Distance in Patients With Chronic Obstructive Pulmonary Disease

  • Kylie Hill, PhD

      Affiliations

    • Department of Pulmonary Physiology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • Department of Physiotherapy, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • School of Physiotherapy, Curtin University of Technology, Bentley, Western Australia, Australia
    • Corresponding Author InformationReprint requests to Kylie Hill, PhD, Respiratory Medicine, West Park Healthcare Centre, 82 Buttonwood Ave, Toronto, ON M6M 2J5, Canada
    • ,
  • Sue C. Jenkins, PhD

      Affiliations

    • Department of Physiotherapy, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • School of Physiotherapy, Curtin University of Technology, Bentley, Western Australia, Australia
    • Lung Institute of Western Australia, Western Australia, Australia
    • ,
  • Nola Cecins, MSc

      Affiliations

    • Department of Physiotherapy, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • School of Physiotherapy, Curtin University of Technology, Bentley, Western Australia, Australia
    • Lung Institute of Western Australia, Western Australia, Australia
    • ,
  • Danielle L. Philippe, BSc

      Affiliations

    • Department of Pulmonary Physiology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • ,
  • David R. Hillman, MD

      Affiliations

    • Department of Pulmonary Physiology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • ,
  • Peter R. Eastwood, PhD

      Affiliations

    • Department of Pulmonary Physiology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
    • School of Physiotherapy, Curtin University of Technology, Bentley, Western Australia, Australia
    • School of Anatomy and Human Biology, University of Western Australia, Nedlands, Western Australia, Australia

  • Image Result

    (A) Regression line and 95% confidence interval for the association between 6MWD and Wmax measured during an incremental cycle ergometry test. Wmax (W)=(0.122×6MWD)+(72.683×height [m])–117.109 (r=.82,

    (A) Regression line and 95% confidence interval for the association between 6MWD and Wmax measured during an incremental cycle ergometry test. Wmax (W)=(0.122×6MWD)+(72.683×height [m])–117.109 (r=.82, standard error of the estimate, 10.8W). (B) Scatter plot of the standardized residuals and values of Wmax (W) estimated using 6MWD and height according to the equation presented in (A). Regression line indicates that the assumption of linearity was met.

  • Image Result
    (A) Regression line and 95% confidence interval for the association between 6-minute walk work (6MWW) and Wmax measured during an incremental cycle ergometry test. Wmax (W)=17.393+(1.442×6MWW) (r=.77,

    (A) Regression line and 95% confidence interval for the association between 6-minute walk work (6MWW) and Wmax measured during an incremental cycle ergometry test. Wmax (W)=17.393+(1.442×6MWW) (r=.77, standard error of the estimate, 11.8W). (B) Scatter plot of the standardized residuals and values of Wmax (W) estimated using 6MWW according to the equation presented in (A). Regression line indicates that the assumption of linearity was met.

 Supported by the National Health and Medical Research Council (Australia) (grant no. 212016).

 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.

PII: S0003-9993(08)00391-2

doi: 10.1016/j.apmr.2008.01.020

Archives of Physical Medicine and Rehabilitation
Volume 89, Issue 9 , Pages 1782-1787 , September 2008

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