Dyspnea ratings for prescription of cross-modal exercise in patients with COPD

Chest
M B Horowitz, D A Mahler

Abstract

To investigate the ability of patients with COPD to reproduce an exercise intensity accurately on the treadmill using dyspnea ratings obtained during incremental exercise on the cycle ergometer (cross-modal exercise prescription). Five visits over an 8-week period. Thirteen symptomatic patients with stable COPD. Age was 67+/-6 years (mean+/-SD). FEV1 was 1.15+/-0.22 L (45+/-7% predicted). At each visit, patients performed spirometry and exercise. Visit 1 was a practice incremental exercise test on the cycle ergometer. At visit 2 (1 week later), patients estimated the intensity of dyspnea using the 0 to 10 category-ratio scale during an incremental exercise test on the cycle ergometer (cycle estimation trial). Visit 3, 5 weeks later, was a practice session on the treadmill. At visit 4, 1 week later, patients were instructed to produce specific intensities of dyspnea (ie, dyspnea targets) at 50% and at anaerobic threshold (AT) or 80% of peak oxygen consumption (VO2) as calculated from results at visit 2 (treadmill production trial). Visit 5, 1 week later, was the treadmill estimation trial. Lung function was stable at all visits. Dyspnea ratings were 1.9+/-0.9 at 50% of VO2 and 5.6+/-1.5 at AT/80% of peak VO2 (17.5+/-3.3 mL/kg/mi...Continue Reading

References

Jan 1, 1992·Medicine and Science in Sports and Exercise·C C DunbarF L Goss
Oct 1, 1990·Medicine and Science in Sports and Exercise·R J RobertsonK F Metz
Jan 1, 1982·Medicine and Science in Sports and Exercise·G A Borg
Jan 1, 1982·Medicine and Science in Sports and Exercise·R J Robertson
Sep 1, 1994·Medicine and Science in Sports and Exercise·R K Dishman

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Citations

Jun 5, 2003·Journal of Cardiopulmonary Rehabilitation·Donald A Mahler
Oct 20, 2001·Thorax·UNKNOWN British Thoracic Society Standards of Care Subcommittee on Pulmonary Rehabilitation
May 6, 1999·American Journal of Respiratory and Critical Care Medicine·R MejiaD A Mahler
Nov 16, 2013·International Journal of Chronic Obstructive Pulmonary Disease·Fernanda Dultra DiasDirceu Costa
Jul 4, 2003·Medicine and Science in Sports and Exercise·Donald A MahlerRoberto Mejia-Alfaro
Jan 8, 2009·Emergency Medicine Australasia : EMA·Amanda SaracinoBrian Jolly
Feb 28, 2014·Supportive Care in Cancer : Official Journal of the Multinational Association of Supportive Care in Cancer·Lauren J FrenshamJames Dollman
Sep 27, 2018·International Journal of Environmental Research and Public Health·Lauren J FrenshamJames Dollman
Mar 13, 2020·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Paolo RuggeriAntonio Toscano
May 5, 2000·Medicine and Science in Sports and Exercise·D N SimmonsS A Walschlager

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