Sleep Position Detection with a Wireless Audio-Motion Sensor—A Validation Study

Wojciech Kukwa, Tomasz Lis, Jonasz Łaba, Ron B. Mitchell, Marcel Młyńczak

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


It is well documented that body position significantly affects breathing indices during sleep in patients with obstructive sleep apnea. They usually worsen while changing from a non-supine to a supine position. Therefore, body position should be an accurately measured and credible parameter in all types of sleep studies. The aim of this study was to specify the accuracy of a neck-based monitoring device (Clebre, Olsztyn, Poland) mounted at the suprasternal notch, in determining a supine and non-supine sleeping position, as well as specific body positions during sleep, in comparison to polysomnography (PSG). A sleep study (PSG along with a neck-based audio-motion sensor) was performed on 89 consecutive patients. The accuracy in determining supine and non-supine positions was 96.9% ± 3.9% and 97.0% ± 3.6%, respectively. For lateral positions, the accuracy was 98.6% ± 2% and 97.4% ± 4.5% for the right and left side, respectively. The prone position was detected with an accuracy of 97.3% ± 5.6%. The study showed a high accuracy in detecting supine, as well as other gross positions, during sleep based on a sensor attached to the suprasternal notch, compared to the PSG study. We feel that the suprasternal notch is a promising area for placing wireless sleep study devices.

Original languageEnglish (US)
Article number1195
Issue number5
StatePublished - May 2022


  • actigraphy
  • home sleep study
  • polysomnography
  • positional sleep apnea

ASJC Scopus subject areas

  • Clinical Biochemistry


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