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Eccentric versus conventional cycle training to improve muscle strength in advanced COPD: A randomized clinical trial.

Authors
  • Bourbeau, Jean1
  • De Sousa Sena, Riany2
  • Taivassalo, Tanja3
  • Richard, Ruddy4
  • Jensen, Dennis5
  • Baril, Jacinthe6
  • Rocha Vieira, Danielle Soares7
  • Perrault, Hélène8
  • 1 Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada. Electronic address: [email protected] , (Canada)
  • 2 Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Physical Therapy, University of Fortaleza, Fortaleza, Brazil; Department of Physical Therapy, Federal University of Ceara, Fortaleza, Brazil. , (Brazil)
  • 3 Department of Kinesiology and Physical Education, McGill University, Montréal, Québec, Canada. , (Canada)
  • 4 Department of Sport Medicine and Functional Explorations, University-Hospital (CHU), Hôpital G. Montpied, Clermont, Ferrand, France. , (France)
  • 5 Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Kinesiology and Physical Education, McGill University, Montréal, Québec, Canada. , (Canada)
  • 6 Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada. , (Canada)
  • 7 Physical Therapy Department, Federal University of Santa Catarina, Brazil. , (Brazil)
  • 8 Respiratory Epidemiology and Clinical Research Unit, Montreal Chest Institute, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Faculty of Health Sciences, University of Ottawa, Ottawa, Canada. , (Canada)
Type
Published Article
Journal
Respiratory physiology & neurobiology
Publication Date
May 01, 2020
Volume
276
Pages
103414–103414
Identifiers
DOI: 10.1016/j.resp.2020.103414
PMID: 32050099
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

To compare eccentric (ECC) and conventional concentric (CON) cycle training on quadriceps muscle strength in advanced COPD. Secondary objective was to assess functional capacity. A parallel-group, assessor-blind, randomized trial was conducted. Severe COPD patients were randomized to either an ECC (n = 13) or CON (n = 11) cycling program for 30-min, 3 times/week for 10 weeks. ECC group trained at ∼4-fold higher power than the CON group at similar relative heart rate intensity. Isometric and isokinetic quadriceps peak torque improved after ECC but not CON; between group difference was significant for isometric peak muscle force (p < 0.05). Peak cycling power and endurance time increased in both groups (p < 0.05). Dyspnea at peak cycling power improved only after ECC training (p < 0.05). Sensory intensity ratings of dyspnea and leg fatigue were significantly lower (p < 0.05) during ECC compared with CON at equivalent relative heart rate intensities. ECC could be an effective alternative and/or adjunct modality to pulmonary rehabilitation in severely ventilatory limited COPD patients. Copyright © 2020. Published by Elsevier B.V.

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