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J. Roa, S. Epstein, E. Breslin, T. Shannon and B. Celli, “Work of Breathing and Ventilatory Muscle Recruitment during Pursed Lip Breathing in Patients with Chronic Airway Obstruction,” American Review of Respiratory Disease, Vol. 143, 1991, p. A77.

has been cited by the following article:

• TITLE: Respiratory Physiotherapy in a Web Browser, Feasibility Study

  AUTHORS: Matevz Leskovsek, Martin Lasič, Dragomira Ahlin

  KEYWORDS: COPD; Asthma; Respiratory Physiotherapy; Breathing Exercises

  JOURNAL NAME: Open Journal of Respiratory Diseases, Vol.3 No.4, October 17, 2013

  ABSTRACT: In this paper, feasibility of web based breathing exercises for respiratory rehabilitation is examined. A system included visual guidance in a web browser and a microphone equipped headset for biofeedback and interaction. Feasibility was assessed in a controlled environment on 34 subjects with anxiety disorders that were not offered any help from the personnel. Weak points of comprehensibility were identified as applying headset (21%) and adhering to breathing exercises instructions (7%). No adverse events were identified. Design flaws that correlated with poor user’s experience were 1) the unpleasant feelings induced by watching the computer screen (21%) and 2) ease/difficulty of physically applying headset (14%). We conclude that conducting breathing exercises by using an acoustic microphone and a web browser is feasible and should be further researched. Additionally we conclude that audio feedback might be more pleasant to some people.