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. 2020 Oct 7;10(10):e039587. doi: 10.1136/bmjopen-2020-039587

Table 1.

Study equipment for participants

ACT sensor Activity tracker Tablet computer
Description Bespoke Fizzyo Sensor.
Wireless battery powered pressure sensor that attaches to ACT devices to measure pressure during ACT.
Fitbit Alta HR.
Wrist-worn activity tracker with heart rate sensor to record daily physical activity.
Linx 12X64 Windows 10 tablet computer.
Required to host remote monitoring apps and games.
Features
  • Microelectromechanical system-based piezoresistive sensor.

  • Two buttons for power on/off and game control input.

  • 1 MB flash-based storage for approximately 227 hours of data.

  • 7 days use from full charge. To fully charge: 70 min.

  • Customisable display with clock face.

  • Photoplethysmographic PurePulse technology heart rate sensor.

  • 3-axis accelerometer movement detection.

  • Memory capacity for 7 days of full data.

  • 7 days use from full charge. To fully charge: 1–2 hours.

  • Intel Atom x5 processor.

  • 4GB RAM.

  • Bluetooth 4.0.

  • Wi-Fi 802.11.

  • 64GB memory storage.

  • 5–7 hours use from full charge. To fully charge: 3 hours.

Data collected
  • Time-stamped ACT pressure data (10 Hz).

  • Heart rate (variable sampling frequency; 6–30 times/min),

  • Step count (per min).

  • Extraction and transmission of Fizzyo sensor and Fitbit data via sync with apps.

  • Gaming data.

App Details Fizzyo app (FizzyoHub)
  • Developed using Visual Studio for Windows 10.

  • Bluetooth syncing of the Fizzyo ACT sensor.

    • Standard phase, syncing only.

    • Feedback phase, daily and monthly breath count graphs enabled.

    • Gaming phase, games (developed in Unity, hosted in Microsoft store) able to be installed and played.

Fitbit app (for Windows 10)
  • Developed by Fitbit Inc.

  • Bluetooth syncing of the Alta HR.

  • Patient facing dashboard displaying daily and historical graphs of step and activity patterns.

  • Feedback on progress against daily and longer-term goals.

Windows store app
  • Required to install and update Fitbit app and Fizzyo app and ACT games.

ACT, airway clearance technique; app, Computer application.