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REINA: A Recognize-Then-Infer Wearable-to-App AI Framework for Breast Cancer Rehabilitation

Zhuang, Q.; Mou, C.; Liu, B.; Fu, M. R.; King, G. W.

2026-08-31 rehabilitation medicine and physical therapy
10.64898/2026.08.29.26361725 medRxiv
Show abstract

Breast cancer survivors frequently experience upper-limb impairments, making continuous monitoring essential for effective rehabilitation. We propose REINA (Recognize-Then-Infer Wearable-to-App AI Framework), a two-stage deep-learning approach for remote monitoring of motor function during breast cancer rehabilitation using wearable-device data. Inertial measurement unit (IMU) signals from wearable devices are first used to recognize physical activities via supervised learning, followed by an activity-specific recurrent neural network (RNN) to infer corresponding electromyography (EMG) signals. REINA establishes reliable inference of neuromuscular activity from wearable IMU data, enabling real-time, cost-effective assessment of motor function recovery in real-world settings.

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