Use of a Biofeedback Breathing App to Augment Poststress Physiological Recovery: Randomized Pilot Study

David Plans   ^{1, 2} , BA, MSc, PhD ;   Davide Morelli   ^{1, 3} , BSc, PhD ;   Stefan Sütterlin   ^{4, 5} , BSc, PhD ;   Lucie Ollis   ⁶ , BSc, MSc ;   Georgia Derbyshire   ⁶ , BSc ;   Mark Cropley   ⁶ , BSc, PhD

¹ BioBeats Group LTD, London, United Kingdom

² Department of Science, Innovation, Technology, and Entrepreneurship, University of Exeter, London, United Kingdom

³ Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom

⁴ Faculty for Health and Welfare Sciences, Østfold University College, Østfold, Norway

⁵ Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway

⁶ Faculty of Health and Medical Sciences, School of Psychology, University of Surrey, Guildford, United Kingdom