Wearable-derived joint kinematics for sleep posture analysis

Using wearable-derived wrist and ankle orientations to investigate sleep posture recognition when labelled examples are scarce.
Wearable sensing
Sleep posture
Joint kinematics
Speaker
Event / host

Omar Elnaggar

MobiUK 2026 · Department of Computer Science and Technology, University of Cambridge, Cambridge, UK

Event date

Friday, the 26th of June, 2026

Abstract
Sleep posture is more varied than a small set of labels such as supine, prone and side-lying can describe. This presentation examines how limb-joint orientations measured with an inertial body sensor network can capture that variation. It brings sensor fusion together with synthetic training examples generated from a single observation of each posture. Studies in simulated and participant-based settings explore what these measurements can distinguish, and where their reliability is limited by orientation drift and similarity between postures. The emphasis is on connecting meaningful biomechanical measurements with methods that can learn from very little labelled data.

Cover slide: Wearable-derived joint kinematics for sleep posture analysis.

Work with Roselina Arelhi, Frans Coenen, Andrew Hopkinson and Paolo Paoletti.

Session 4: Wearables, Clinical Monitoring, and Sensing Infrastructure; 15:55–16:55, Lecture Theatre 1.

Related research: Sleep wearables.

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