Effect of ventilation-feedback training on endurance and perceived breathlessness during constant work-rate leg-cycle exercise in patients with COPD | Zendy

Eileen G. Collins | Zendy; Linda Fehr | Zendy; Christine Bammert | Zendy; Susan O’Çonnell | Zendy; Franco Laghi | Zendy; Karla Hanson | Zendy; Eileen Hagarty | Zendy; W. Edwin Langbein | Zendy

Open Access

Effect of ventilation-feedback training on endurance and perceived breathlessness during constant work-rate leg-cycle exercise in patients with COPD

Author(s) -

Eileen G. Collins,

Linda Fehr,

Christine Bammert,

Susan O’Çonnell,

Franco Laghi,

Karla Hanson,

Eileen Hagarty,

W. Edwin Langbein

Publication year - 2003

Publication title -

the journal of rehabilitation research and development

Language(s) - English

Resource type - Journals

eISSN - 1938-1352

pISSN - 0748-7711

DOI - 10.1682/jrrd.2003.10.0035

Subject(s) - medicine , ventilation (architecture) , copd , cycle ergometer , physical therapy , endurance training , tidal volume , respiratory minute volume , cardiology , work of breathing , heart rate , mechanical ventilation , respiratory system , blood pressure , mechanical engineering , engineering

The purpose of this study was to evaluate the efficacy of a unique program of ventilation-feedback training combined with leg-cycle exercise to improve exertional endurance and decrease perceived dyspnea in patients with chronic obstructive pulmonary disease (COPD). Thirty-nine patients (67.5 +/- 8.1 yr of age) with moderate to severe COPD (42.6% of predicted forced expiratory volume in 1 s) were randomized to one of three 6-week experimental interventions: ventilation-feedback with exercise (V(+EX)), exercise only (EX(ONLY)), or ventilation-feedback only (VF(ONLY)). At baseline and at 6 weeks, patients completed a constant work-rate leg-cycle ergometer test at 85 percent of maximal power output. There were increases within the groups in exercise duration: 11.5 min (103%), 8.0 min (66%), and 0.4 min (4%) for the VF(+EX), EX(ONLY) and VF(ONLY) groups, respectively. The VF(ONLY) group experienced no significant within-group changes in selected gas exchange parameters. However, there were significant (p < 0.05) posttraining changes in minute ventilation, tidal volume, breathing frequency (f), and expiratory time (Te) in the VF(+EX) group, and in f and Te in the EX(ONLY) group. After completing the training, VF(+EX) and EX(ONLY) patients reported less breathlessness and perceived exertion (p < 0.05). The VF(ONLY) patients' ratings changed in the hypothesized direction but were not significant. Based on these preliminary data, VF(+EX) and EX(ONLY) were equally effective in improving leg-cycle exercise tolerance in patients with moderate to severe COPD.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research