| dc.creator | Martínez S,Alejandro | |
| dc.creator | Lisboa B,Carmen | |
| dc.creator | Jalil M,Jorge | |
| dc.creator | Muñoz D,Víctor | |
| dc.creator | Díaz P,Orlando | |
| dc.creator | Casanegra P,Pablo | |
| dc.creator | Corbalán H,Ramón | |
| dc.creator | Vásquez C,Ana María | |
| dc.creator | Leiva G,Alicia | |
| dc.date | 2001-02-01 | |
| dc.date.accessioned | 2020-02-17T15:26:05Z | |
| dc.date.available | 2020-02-17T15:26:05Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0034-98872001000200002 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/126514 | |
| dc.description | Background: Patients with chronic heart failure have a lower inspiratory muscle strength and fatigue endurance. Aim: To assess the effects of selective training of respiratory muscles in patients with heart failure. Patients and methods: Twenty patients with stable chronic heart failure, aged 58.3 ± 3 years with an ejection fraction of 28 ± 9%, were subjected to respiratory muscle training with threshold valves. The load was fixed in 30% of maximal inspiratory pressure (PImax) in 11 and in 10% of PImax in nine. Two sessions of 15 minutes, 6 days per week, during 6 weeks were done. Degree of dyspnea (Mahler score), maximal oxygen uptake, distance walked in 6 minutes, respiratory muscle function and left ventricular ejection fraction were measured before and after training. Results: Both training loads were associated to an improvement in dyspnea (+2.7 ± 1.8 and +2.8 ± 1.8 score points with 30% Plmax and 10% PImax respectively), maximal oxygen uptake (from 19 ± 3 to 21.6 ± 5 and from 16 ± 5 to 18.6 ± 7 ml/kg/min with 30% PImax and 10% PImax respectively, p< 0.05), PImax (from 78 ± 22 to 99 ± 22 and from 72 ± 34 to 82.3 cm H20 with 30% Plmax and 10% PImax respectively), sustained PImax (from 63 ± 18 to 90 ± 22 and from 58 ± 3 to 69 ± 3 cm H20 with 30% PImax and 10% PImax respectively), and maximal sustained load (from 120 ± 67 to 195 ± 47 and from 139 ± 120 to 192 ± 154 g with 30% PImax and 10% PImax respectively). The distance walked in 6 min only increased in subjects trained at 30% PImax (from 451 ± 78 to 486 ± 68 m). Conclusions: Selective training of respiratory muscles results in a functional improvement of patients with chronic heart failure. (Rev Med Chile 2001; 129: 133-39). | |
| dc.format | text/html | |
| dc.language | es | |
| dc.publisher | Sociedad Médica de Santiago | |
| dc.relation | 10.4067/S0034-98872001000200002 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Revista médica de Chile v.129 n.2 2001 | |
| dc.subject | Heart failure, congestive | |
| dc.subject | Rehabilitation | |
| dc.subject | Respiratory function tests | |
| dc.subject | Respiratory muscles | |
| dc.title | Entrenamiento selectivo de los músculos respiratorios en pacientes con insuficiencia cardíaca crónica | |
