Brenda M. Button

To the Editor, Exercise and physical activity are essential components for the management of individuals with Cystic Fibrosis (CF) and recommended in clinical practice guidelines [1]. With the increasing use of telehealth for health care delivery [2], there is further need for telehealth models of care that include physiotherapy and exercise training to help overcome historical challenges of infection control with face-to-face and group activities [3].

1 Introduction Dysfunctional breathing (DB) represents chronic changes in breathing patterns resulting in dyspnoea, chest tightness, and other non-respiratory symptoms including dizziness, tremor and paraesthesia. These symptoms occur in the absence of respiratory disease or are disproportionate to the patient's established chronic lung disease [1]. There are a range of terminologies for DB in the literature including hyperventilation syndrome and breathing pattern disorder.