Devices
Devices for training respiratory muscle endurance use a constant resistance of 2 mm. At the same time, however, they must be able to digitally record the curve of oral pressures exerted throughout the entire inhalation or exhalation period as a function of time and then calculate the integral of these variables.
The devices used for this purpose are as follows:
RT2 (DeVilbiss Healthcare United Kingdom Ltd.)
This is the oldest standardized device designed to measure inspiratory parameters within the TIRE protocol. It was the basis for the introduction of TIRE into clinical research. It can be connected to a computer via an infrared device, where it records the oral pressures over time and then calculates and displays their dependency curve. The measured subject thus receives immediate biofeedback. The data is recorded and processed offline.
PrO2 (Design Net, Smithfield USA)
PrO2 is a small, modern, compact device. It automatically detects whether the subject is inhaling or exhaling and can measure both phases of breathing. During measurement, the device is connected via Bluetooth to a computer, tablet, or mobile phone, where the data is recorded and then processed using the PrO2 Fit application. The data can also be sent online to a secure internet account for backup, further evaluation, or setting up further training. The device is compatible with iOS, Android, and Windows software.