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[Selective training of respiratory muscles in patients with chronic heart failure].
Rev Med Chil. 2001 Feb; 129(2):133-9.RM

Abstract

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% PImax 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% PImax 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.

Authors+Show Affiliations

Departamentos de Enfermedades Cardiovasculares y Respiratorias, Pontificia Universidad Católica de Chile.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
English Abstract
Journal Article
Research Support, Non-U.S. Gov't

Language

spa

PubMed ID

11351463

Citation

Martínez, A, et al. "[Selective Training of Respiratory Muscles in Patients With Chronic Heart Failure]." Revista Medica De Chile, vol. 129, no. 2, 2001, pp. 133-9.
Martínez A, Lisboa C, Jalil J, et al. [Selective training of respiratory muscles in patients with chronic heart failure]. Rev Med Chil. 2001;129(2):133-9.
Martínez, A., Lisboa, C., Jalil, J., Muñoz, V., Díaz, O., Casanegra, P., Corbalán, R., Vásquez, A. M., & Leiva, A. (2001). [Selective training of respiratory muscles in patients with chronic heart failure]. Revista Medica De Chile, 129(2), 133-9.
Martínez A, et al. [Selective Training of Respiratory Muscles in Patients With Chronic Heart Failure]. Rev Med Chil. 2001;129(2):133-9. PubMed PMID: 11351463.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Selective training of respiratory muscles in patients with chronic heart failure]. AU - Martínez,A, AU - Lisboa,C, AU - Jalil,J, AU - Muñoz,V, AU - Díaz,O, AU - Casanegra,P, AU - Corbalán,R, AU - Vásquez,A M, AU - Leiva,A, PY - 2001/5/16/pubmed PY - 2001/6/2/medline PY - 2001/5/16/entrez SP - 133 EP - 9 JF - Revista medica de Chile JO - Rev Med Chil VL - 129 IS - 2 N2 - 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% PImax 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% PImax 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. SN - 0034-9887 UR - https://www.unboundmedicine.com/medline/citation/11351463/[Selective_training_of_respiratory_muscles_in_patients_with_chronic_heart_failure]_ L2 - https://medlineplus.gov/heartfailure.html DB - PRIME DP - Unbound Medicine ER -