Estimating maximum work rate during incremental cycle ergometry testing from six-minute walk distance in patients with chronic obstructive pulmonary disease

Kylie Hill; Sue C. Jenkins; Nola Cecins; Danielle L. Philippe; David R. Hillman; Peter R. Eastwood

doi:10.1016/j.apmr.2008.01.020

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Estimating maximum work rate during incremental cycle ergometry testing from six-minute walk distance in patients with chronic obstructive pulmonary disease

Journal article

Peer reviewed

Estimating maximum work rate during incremental cycle ergometry testing from six-minute walk distance in patients with chronic obstructive pulmonary disease

Kylie Hill, Sue C. Jenkins, Nola Cecins, Danielle L. Philippe, David R. Hillman and Peter R. Eastwood

Archives of physical medicine and rehabilitation, Vol.89(9), pp.1782-1787

2008

DOI: https://doi.org/10.1016/j.apmr.2008.01.020

PMID: 18760164

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Abstract

Exercise test

Pulmonary disease

chronic obstructive

Rehabilitation

Objective To develop a predictive equation to permit estimation of the maximum work rate (Wmax) achieved during an incremental cycle ergometry test from the measurement of 6-minute walk distance (6MWD) and its derivative, 6-minute walk work, which is the product of 6MWD and body weight. Design Cross-sectional observational study. Setting Outpatient physiotherapy and pulmonary physiology clinics in a tertiary hospital. Participants Patients (N=50; 36 men) with chronic obstructive pulmonary disease (forced expiratory volume in 1 second [FEV1]=37%±11% of predicted). Interventions Not applicable. Main Outcome Measures Measurements were obtained of 6MWD and Wmax achieved during a laboratory-based, symptom-limited incremental cycle ergometry test. Linear regression analyses were performed using 6MWD, height, weight, and FEV1 and using 6-minute walk work, height, and FEV1 to determine their contribution to Wmax and to develop predictive equations for estimating Wmax. Results The equations derived to estimate Wmax using 6MWD and 6-minute walk work, respectively, were as follows: Wmax (W)=(0.122×6MWD)+(72.683×height [m])–117.109 (r2=.67, standard error of the estimate [SEE]=10.8W) and Wmax (W)=17.393+(1.442×6-minute walk work) (r2=.60, SEE=11.8W). Conclusions Wmax can be estimated from equations based on measurements of 6MWD or 6-minute walk work. The estimate of Wmax derived from either equation may provide a basis on which to prescribe cycle ergometry training work rates that comply with the current guidelines for pulmonary rehabilitation.

Details

Title: Estimating maximum work rate during incremental cycle ergometry testing from six-minute walk distance in patients with chronic obstructive pulmonary disease
Authors/Creators: Kylie Hill - Sir Charles Gairdner Hospital
Sue C. Jenkins - Curtin University
Nola Cecins - Sir Charles Gairdner Hospital
Danielle L. Philippe - Sir Charles Gairdner Hospital
David R. Hillman - Sir Charles Gairdner Hospital
Peter R. Eastwood - Sir Charles Gairdner Hospital
Publication Details: Archives of physical medicine and rehabilitation, Vol.89(9), pp.1782-1787
Publisher: Elsevier
Number of pages: 6
Grant note: 212016 / National Health and Medical Research Council (Australia); National Health and Medical Research Council (NHMRC) of Australia
Identifiers: 991005592654307891
Murdoch Affiliation: Vice Chancellery
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 1 Clinical & Life Sciences; 1.65 Allergy; 1.65.192 COPD
Web Of Science research areas: Rehabilitation; Sport Sciences
ESI research areas: Clinical Medicine