The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Does exercise test modality influence dyspnoea perception in obese patients with COPD?
Abstract
The purpose of this study was to investigate whether differences in physiological responses to weight-bearing (walking) and weight-supported (cycle) exercise influence dyspnoea perception in obese chronic obstructive pulmonary disease (COPD) patients, where such discrepancies are probably exaggerated. We compared metabolic, ventilatory and perceptual responses during incremental treadmill and cycle exercise using a matched linearised rise in work rate in 18 (10 males and eight females) obese (mean±sd body mass index 36.4±5.0 kg·m−2) patients with COPD (forced expiratory volume in 1 s 60±11% predicted). Compared with cycle testing, treadmill testing was associated with a significantly higher oxygen uptake, lower ventilatory equivalent for oxygen and greater oxyhaemoglobin desaturation at a given work rate (p<0.01). Cycle testing was associated with a higher respiratory exchange ratio (p<0.01), earlier ventilatory threshold (p<0.01) and greater peak leg discomfort ratings (p=0.01). Ventilation, breathing pattern and operating lung volumes were similar between tests, as were dyspnoea/work rate and dyspnoea/ventilation relationships. Despite significant between-test differences in physiological responses, ventilation, operating lung volumes and dyspnoea intensity were similar at any given external power output during incremental walking and cycling exercise in obese COPD patients. These data provide evidence that either exercise modality can be selected for reliable evaluation of exertional dyspnoea in this population in research and clinical settings.
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“The rise in dyspnea intensity ratings during exercise correlates strongly with indirect indices of increased respiratory neural drive (central motor command output) such as tidal electromyographic activation of the diaphragm relative to maximum, tidal esophageal pressure swings relative to maximum, and ventilation relative to peak ventilatory capacity [66,76].”
From Lung hyperinflation in COPD: applying physiology to clinical practice (2015) · cites this paper as [66]
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“In this setting, RND (indirectly assessed by diaphragm electromyography (EMGdi)) reaches >70 % of the maximal possible value and tidal esophageal pressure swings increase to about 50-60 % of the maximal value [62,66].”
From Lung hyperinflation in COPD: applying physiology to clinical practice (2015) · cites this paper as [66]
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Cites
Dynamic Hyperinflation and Exercise Intolerance in Chronic Obstructive Pulmonary Disease
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Self-citationDyspnea and Activity Limitation in COPD: Mechanical Factors
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Self-citationOra, J., Laveneziana, P., Ofir, D., Deesomchok, A., Webb, K. A., & O'Donnell, D. E. (2009) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/rccm.200904-0530oc · Cited by 139
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Effect of obesity on respiratory mechanics during rest and exercise in COPD
Ora, J., Laveneziana, P., Wadell, K., Preston, M., Webb, K. A., & O'Donnell, D. E. (2011) · Journal of Applied Physiology · doi:10.1152/japplphysiol.01131.2010 · Cited by 101
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Effect of obesity on constant workrate exercise in hyperinflated men with COPD
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Cited by
Lung hyperinflation in COPD: applying physiology to clinical practice
O’Donnell, D. E., Webb, K. A., & Neder, J. A. (2015) · COPD Research and Practice · doi:10.1186/s40749-015-0008-8 · Cited by 93
Self-citation
Metadata
- Authors
- Ciavaglia, C. E., Guenette, J. A., Ora, J., Webb, K. A., Neder, J. A., & O’Donnell, D. E.
- Venue
- European Respiratory Journal
- Publisher
- European Respiratory Society (ERS)
- Published
- 2013-12-05
- Volume
- 43
- Issue
- 6
- Pages
- 1621-1630
- ISSN
- 0903-1936
- 1399-3003
- Cited by
- 28
- References
- 7
- Language
- en
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- Ciavaglia, C. E., Guenette, J. A., Ora, J., Webb, K. A., Neder, J. A., & O’Donnell, D. E. (2014). Does exercise test modality influence dyspnoea perception in obese patients with COPD? European Respiratory Journal. https://doi.org/10.1183/09031936.00151513
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