Six-Minute Walk Test and Maximum Exercise Test in Cycloergometer in Chronic Obstructive Pulmonary Disease. Are the Physiological Demands Equivalent?
| Autor: | Arturo Morales, Julieta Klaassen, Rodrigo Osses, Orlando Díaz, Carmen Lisboa, Fernando Saldías |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
medicine.medical_specialty
COPD SIX MINUTE WALK medicine.diagnostic_test business.industry Pulmonary disease General Medicine medicine.disease respiratory tract diseases Preferred walking speed Pulse oximetry Disease severity Internal medicine Heart rate Cardiology Physical therapy Medicine business Respiratory minute volume |
| Zdroj: | Archivos de Bronconeumología (English Edition). 46:294-301 |
| ISSN: | 1579-2129 |
| DOI: | 10.1016/s1579-2129(10)70071-9 |
| Popis: | a b s t r a c t Background and objectives: The physiological load imposed by the six minute walk test (SMWT) in chronic obstructive pulmonary disease (COPD) patients come from small studies where the influence of disease severity has not been assessed. The aim of the present study was to compare the SMWT with an incremental cardiopulmonary exercise test (CPET) in patients classified by disease severity according to FEV1 (cutoff 50% predicted). Patients and methods: Eighty-one COPD patients (53 with FEV1 ≥50%) performed both tests on two consecutive days. Oxygen consumption (V. O2), carbon dioxide production (V. O2), minute ventilation (V. E), heart rate (HR) and pulse oximetry (SpO2) were measured during SMWT and CPET using portable equipment. Dyspnea and leg fatigue were measured with the Borg scale. Results: In both groups, walking speed was constant during the SMWT and V. O2 showed a plateau after the 3rd minute. When comparing SMWT (6th min) and peak CPET, patients with FEV1 ≥50% showed a greater V. O2, but lower values of V. O2,VE, HR, dyspnea, leg fatigue, and SpO2 during walking. In contrast, in those with FEV1 |
| Databáze: | OpenAIRE |
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