Physiological response to eccentric and concentric cycling in patients with chronic obstructive pulmonary disease

Rolf Nickel, Felipe Troncoso, Orlando Flores, Roberto Gonzalez-Bartholin, Karen Mackay, Orlando Diaz, Mauricio Jalon, Luis Peñailillo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We aimed to compare the cardiorespiratory, metabolic, and perceptual responses to high-and moderate-intensity eccentric cycling versus moderate-intensity concentric cycling in chronic obstructive pulmonary disease (COPD) patients. Ten patients with moderate COPD (forced expiratory volume in 1 s (FEV1) = 68.6% ± 20.4% of predicted; 68.3 ± 9.1 years) performed 30 min of moderate-intensity concentric (CONC-M: 50% maximum workload; Wmax), moderate-intensity eccentric (ECC-M: 50% Wmax), and high-intensity eccentric (ECC-H: 100% Wmax) cycling. Average power output, oxygen consumption (V˙ O2), minute ventilation (VE), respiratory frequency (fR), oxygen saturation (SpO2), heart rate (HR), systolic and diastolic blood pressure (SBP and DBP), rate of perceived exertion (RPE), and dyspnea were measured during cycling. Compared with CONC-M, lower V˙ O2 (–52% ± 14%), VE (–47% ± 16%), fR (–21% ± 14%), HR (–14% ± 16%), SBP (–73% ± 54%), RPE (–36% ± 26%), and dyspnea (–41% ± 37%) were found during ECC-M. During ECC-H, a similar metabolic demand to CONC-M was found. However, average power output was 117% ± 79% higher during ECC-H. Eccentric cycling can be safely performed by COPD patients and induced lower cardiorespiratory, metabolic, and perceptual responses than concentric exercise when performed at the same workload. Novelty • Moderate-and high-intensity eccentric cycling can be performed by COPD patients. • Moderate-intensity eccentric cycling showed lower cardiorespiratory, metabolic, and perceptual demand than concentric cycling at the same workload in COPD patients. • Even at double workload, eccentric cycling induces lower cardiorespiratory, metabolic, and perceptual demand than moderate-intensity concentric cycling.

Original languageEnglish
Pages (from-to)1232-1237
Number of pages6
JournalApplied Physiology, Nutrition and Metabolism
Volume45
Issue number11
DOIs
Publication statusPublished - 2020
Externally publishedYes

Keywords

  • COPD
  • Cycle ergometer
  • Eccentric exercise
  • Endurance exercise
  • Muscle dysfunction
  • Rehabilitation

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Physiology
  • Nutrition and Dietetics
  • Physiology (medical)

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