Critical Velocity Determined by a Non-Exhaustive Method in Subjects With COPD.
BACKGROUND: Exercise training is an effective and low-cost tool for COPD rehabilitation. Thus, validating a non-exhaustive method to determine a patient's anaerobic threshold would be a very interesting tool in practical settings. We aimed to test the reproducibility of critical velocity values dete...
| Publicado en: | Respiratory Care Vol. 63; no. 3; pp. 319 - 326 |
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| Autores principales: | , , , , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Mary Ann Liebert, Inc.
Mar2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=128238635&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 128238635 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00201324 4GG jtl: Respiratory Care issn: 00201324 maglogo: N pubinfo: dt: Mar2018 vid: 63 iid: 3 pid: 1365 pub: Mary Ann Liebert, Inc. place: New Rochelle, New York artinfo: ui: 128238635 128238635 128238635 10.4187/respcare.05637 128238635 ppf: 319 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Critical Velocity Determined by a Non-Exhaustive Method in Subjects With COPD. aug: au: Leite, Marceli Rocha Uzeloto, Juliana Souza de Alencar Silva, Bruna Spolador Figueira Freire, Ana Paula Coelho de Lima, Fabiano Francisco Campos, Eduardo Zapaterra Destro Christofaro, Diego Giulliano Kalva-Filho, Carlos Augusto Ramos, Dionei Cipulo Ramos, Ercy Mara affil: Department of Physiotherapy, Universidade Estadual Paulista, Presidente Prudente, São Paulo, Brazil sug: subj: Pulmonary Disease, Chronic Obstructive Therapy Therapeutic Exercise Pulmonary Disease, Chronic Obstructive Rehabilitation Anaerobic Threshold Exercise Tolerance Human Cross Sectional Studies Descriptive Statistics Oxygen Consumption Intraclass Correlation Coefficient Confidence Intervals Protocols Lactates Blood Reproducibility of Results Heart Rate Oxygen Saturation Hemodynamics Brazil Anthropometry Spirometry Random Assignment Pulse Oximetry Male Female Aged Middle Age Biophysical Instruments T-Tests One-Way Analysis of Variance Data Analysis Software Spearman's Rank Correlation Coefficient P-Value Funding Source Aged: 65+ years Middle Aged: 45-64 years Male Female ab: BACKGROUND: Exercise training is an effective and low-cost tool for COPD rehabilitation. Thus, validating a non-exhaustive method to determine a patient's anaerobic threshold would be a very interesting tool in practical settings. We aimed to test the reproducibility of critical velocity values determined in a non-exhaustive manner (CVNE) and tolerance for exercise performed at this physiological marker in subjects with COPD. METHODS: Twelve subjects with COPD were evaluated in this cross-sectional study. The study was divided into 2 phases: Phase A consisted of reproducibility of CVNE for subjects with COPD, and Phase B determined the tolerance for exercise tests performed at this physiological marker. RESULTS: The proposed protocol for determining CVNE presented fair reproducibility according to blood lactate concentrations (intraclass correlation coefficient = 0.58). However, we cannot consider that the tests were reproducible due to the wide CI (0.03-0.85). Furthermore, moderate and strong correlations were observed between the CVNE determined by lactate concentration, by oxygen consumption (...) (r = 0.66), and by heart rate (r = 0.88). However, a high limit of agreement was observed ±1.45 km/h and ±1.55 km/h, respectively. In the tolerance for exercise test, none of the subjects presented lactate destabilization, whereas 3 tests were interrupted by oxygen saturation decline and 1 test was interrupted by hemodynamic instability. CONCLUSIONS: Although most of the subjects presented good tolerance for exercise at CVNE, fair levels of reproducibility were observed in subjects with COPD, even using lactate. Thus, the use of CVNE determined through double 3-min efforts should be considered with caution. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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