RT journal article T1 Effects of a Rehabilitation Programme Using a Nasal Inspiratory Restriction Device in COPD A1 González Montesinos, José Luis A1 Fernández Santos, Jorge del Rosario A1 Vaz Pardal, Carmen A1 Ponce González, Jesús Gustavo A1 Marín Galindo, Alberto A1 Arnedillo Muñoz, Aurelio A2 Didáctica de la Educación FísicaPlástica y Musical K1 chronic pulmonary obstructive pulmonary disease K1 inspiratory muscle training K1 physical exercise K1 cardiopulmonary exercise test AB Chronic obstructive pulmonary disease (COPD) patients are characterised for presenting dyspnea, which reduces their physical capacity and tolerance to physical exercise. The aim of this study was to analyse the effects of adding a Feel-Breathe (FB) device for inspiratory muscle training (IMT) to an 8-week pulmonary rehabilitation programme. Twenty patients were randomised into three groups: breathing with FB (FBG), oronasal breathing without FB (ONBG) and control group (CG). FBG and ONBG carried out the same training programme with resistance, strength and respiratory exercises for 8 weeks. CG did not perform any pulmonary rehabilitation programme. Regarding intra group differences in the value obtained in the post-training test at the time when the maximum value in the pre-training test was obtained (Post(PRE)), FBG obtained lower values in oxygen consumption (VO2, mean = -435.6 mL/min, Bayes Factor (BF10) > 100), minute ventilation (VE, -8.5 L/min, BF10 = 25), respiratory rate (RR, -3.3 breaths/min, BF10 = 2), heart rate (HR, -13.7 beats/min, BF10 > 100) and carbon dioxide production (VCO2, -183.0 L/min, BF10 = 50), and a greater value in expiratory time (Tex, 0.22 s, BF10 = 12.5). At the maximum value recorded in the post-training test (Post(FINAL)), FBG showed higher values in the total time of the test (T-t, 4.3 min, BF10 = 50) and respiratory exchange rate (RER, 0.05, BF10 = 1.3). Regarding inter group differences at Pre(POST), FBG obtained a greater negative increment than ONBG in the ventilatory equivalent of CO2 (EqCO(2), -3.8 L/min, BF10 = 1.1) and compared to CG in VE (-8.3 L/min, BF10 = 3.6), VCO2 (-215.9 L/min, BF10 = 3.0), EqCO2 (-3.7 L/min, BF10 = 1.1) and HR (-12.9 beats/min, BF10 = 3.4). FBG also showed a greater Pre(POST) positive increment in Tex (0.21 s, BF10 = 1.4) with respect to CG. At Pre(FINAL), FBG presented a greater positive increment compared to CG in T-t (4.4 min, BF10 = 3.2) and negative in VE/VCO2 intercept (-4.7, BF10 = 1.1). The use of FB added to a pulmonary rehabilitation programme in COPD patients could improve tolerance in the incremental exercise test and energy efficiency. However, there is only a statically significant difference between FBG and ONBG in EqCO(2). Therefore, more studies are necessary to reach a definitive conclusion about including FB in a pulmonary rehabilitation programme. PB MDPI SN 1660-4601 YR 2021 FD 2021-04 LK http://hdl.handle.net/10498/24900 UL http://hdl.handle.net/10498/24900 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 08-nov-2026