INSPIRATORY MUSCLE TRAINING IN CHRONIC AIR-FLOW LIMITATION - COMPARISON OF 2 DIFFERENT TRAINING LOADS WITH A THRESHOLD DEVICE

Simple item page
dc.contributor.authorLISBOA, C
dc.contributor.authorMUNOZ, V
dc.contributor.authorBEROIZA, T
dc.contributor.authorLEIVA, A
dc.contributor.authorCRUZ, E
dc.date.accessioned2025-01-21T01:35:23Z
dc.date.available2025-01-21T01:35:23Z
dc.date.issued1994
dc.description.abstractThe usefulness of inspiratory muscle training (IMT) in chronic airflow limitation (CAL) patients is a controversial issue, mainly due to differences in the training load. To further evaluate this aspect, we studied the effect of the magnitude of the load using a threshold pressure trainer.
dc.description.abstractTen CAL patients (5 males, 5 females), 67 +/- 2 yrs (mean +/- SEM) and forced expiratory volume in one second (FEV1) 36 +/- 2% pred, were trained for 30 min a day using a load of 30% of their maximal inspiratory mouth pressure (PImax) (Group 1). Another 10 CAL patients (5 males, 5 females), 73 +/- 2 yrs and FEV1 37 +/- 2% pred), were trained using only 12% of their PImax (Group 2). Training was assessed hy PImax, inspiratory muscle power output (IMPO), sustainable inspiratory pressure (SIP), maximal inspiratory flow rate (VImax), pattern of breathing during loaded breathing, Mahler's dyspnoea score, and the 6 min walking distance (6MWD).
dc.description.abstractAfter 5 weeks of training, Group 1 exhibited significant increments in: PImax (34 +/- 11%); IMPO (92 +/- 16%); SIP (36 +/- 9%); and VImax (34 +/- 13%). Dyspnoea was also reduced, and the 6MWD increased by 48 +/- 22 m. We observed no significant changes in Group 2. During loaded breathing, Group 1 showed a significant increment in tidal volume (VT) and mean inspiratory flow (VT/TI), and a reduction in inspiratory time (TI). In Group 2, VT and VT/TI also increased significantly, but the breathing frequency increased with a reduction of expiratory time. When comparing both groups after training, significant differences in PImax, IMPO, VImax and dyspnoea were observed, with no significant changes in the other parameters.
dc.description.abstractWe conclude that, in patients with chronic airflow limitation, inspiratory muscle training with a high enough load improves inspiratory muscle strength and power output, reduces dyspnoea, and makes the pattern of breathing adequate during loaded breathing. These changes may allow patients to cope better with increased loads imposed by physical effort and exacerbation of symptoms.
dc.fuente.origenWOS
dc.identifier.issn0903-1936
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97674
dc.identifier.wosidWOS:A1994NY61200011
dc.issue.numero7
dc.language.isoen
dc.pagina.final1274
dc.pagina.inicio1266
dc.revistaEuropean respiratory journal
dc.rightsacceso restringido
dc.subjectCHRONIC AIR-FLOW LIMITATION
dc.subjectDYSPNEA
dc.subjectINSPIRATORY MUSCLE TRAINING
dc.subjectRESPIRATORY MUSCLES
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleINSPIRATORY MUSCLE TRAINING IN CHRONIC AIR-FLOW LIMITATION - COMPARISON OF 2 DIFFERENT TRAINING LOADS WITH A THRESHOLD DEVICE
dc.typeartículo
dc.volumen7
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas