30
Participants
Start Date
December 14, 2020
Primary Completion Date
November 29, 2021
Study Completion Date
November 29, 2021
Acapella Choice
3 minutes of exercise consisting of blowing through the device (on setting '5') and phonating at the same time.
Tube-in-water
3 minutes of exercise consisting of blowing through a silicone tube (10mm internal diameter) submerged in 5 cm of water whilst phonating at the same time.
Royal National ENT Hospital, UCLH Hospitals NHS Trust, London
Smiths Medical, ASD, Inc.
INDUSTRY
University College, London
OTHER