PMID: 8952124Oct 1, 1996Paper

Biofeedback-induced voluntary reduction of respiratory resistance in severe bronchial asthma

Behaviour Research and Therapy
R MassB Dahme

Abstract

Attempts to reduce asthmatic symptoms with respiratory resistance (Ros) biofeedback yielded heterogeneous results. The nature of treatment effects remained unclear (e.g. unspecific relaxation, visceral learning); little is known about clinical long-term effects. The present study investigated the suitability of a statistical single-case approach for an adequate evaluation. A female asthmatic underwent 12 Ros biofeedback sessions. Several breathing parameters were recorded during all sessions and pre/post investigations. The clinical course was observed with symptom diaries for 100 days. The subject achieved considerable voluntary control over her Ros, this control was based upon the expiratory flow. In general, the effects on the clinical course were weak; however, asthmatic attacks decreased in the follow-up period. Careful analyses of physiological, psychophysiological, and course variables allowed the identification of the main processes underlying the biofeedback effects. Further studies should investigate the worth of the expiratory flow as feedback variable.

References

Mar 11, 1976·Psychosomatic Medicine·L Vachon, E S Rich
Nov 1, 1992·Biological Psychology·C J Wientjes
Apr 1, 1991·Biomedizinische Technik. Biomedical Engineering·R MassB Dahme
Jan 1, 1987·Journal of Psychosomatic Research·J M Erskine-Milliss, P J Cleary
Oct 1, 1987·The American Review of Respiratory Disease·M J KrowkaR E Hyatt
Mar 1, 1983·Biofeedback and Self-regulation·J K ThompsonE T Sturgis
Dec 1, 1993·Biofeedback and Self-regulation·R MassR Richter

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