Exploring Breathing Patterns (EPISODE)

Adult patient >18 years old referred for spirometry in the Respiratory Physiology Clinic at Prince Charles Hospital;

Eligibility Criteria - Control Participants Control participants will be contact through the British Lung Foundations local groups who have indicated their willingness to be involved in local clinical research to act as control participants. As all prospective participants will have had their respiratory function measured before taking part by a Respiratory Physiologist, we do not expect to have to screen for medical issues for participation in the study. Furthermore, the actual tests the participants will be undertaking will be non - invasive, submaximal and will require little or no effort.

6.1.2 Inclusion criteria Patient Participants

1. Adult patient >18 years old referred for spirometry in the Respiratory Physiology Clinic at Prince Charles Hospital;
2. Clinically defined obstructive or restrictive respiratory disease (indicated by spirometry)
3. Clinically stable (indicated by being able to undergo spirometry)
4. No significant unstable disease co-morbidities (indicated by being able to undergo spirometry)
5. Capable of providing informed consent.
6. Willing to take part in all study measurements.
7. The speaking exercise will be conducted in English on this study.
8. Participants are not taking part in any other research. 6.1.3 Inclusion criteria Control Participants

1. No obstructive or restrictive respiratory disease (indicated by spirometry) 2. Clinically stable (indicated by being able to undergo spirometry) 3. No significant unstable disease co-morbidity's (indicated by being able to undergo spirometry) 4. Capable of providing informed consent. 5. Willing to take part in all study measurements. 6. The speaking exercise will be conducted in English on this study. 7. Participants are not taking part in any other research.

6.1.4 Exclusion criteria for both Patient and Control Participants

1. Any form of challenge testing in the Respiratory Physiology Department involving salbutamol.
2. Severe Sensory and/or Cognitive Impairment
3. Inability to complete study measurements