Related Experiment Video
Updated: Feb 23, 2026
Home-Based Monitor for Gait and Activity Analysis
Published on: August 8, 2019
Impaired bed mobility: quantitative torque analysis with axial inertial sensors
Roongroj Bhidayasiri1,2, Jirada Sringean1, Chusak Thanawattano1,3
1Chulalongkorn Center of Excellence for Parkinson's Disease & Related Disorders, Department of Medicine, Faculty of Medicine, Chulalongkorn University & King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok 10330, Thailand.
Abstract:
Difficulty in turning in bed is rated as the most troublesome night-time symptom among Parkinson's disease (PD) patients.
Aim:
To develop a practical objective method for home assessment of a patient's ability to turn in bed.
Methods:
Nocturnal parameters and torque of self-turning in bed from 17 PD couples were assessed and compared using a wearable axial sensor for two nights in their homes.
Results:
The torque of axial rotation which indicates the ability of PD patients to turn in bed was significantly less than their spouses (p < 0.001). Significant correlations were observed between the torque of turning in bed and total unified Parkinson's Disease Rating Scale score (r = 0.71; p = 0.001), and total Nocturnal Akinesia Dystonia and Cramp score (r = 0.634; p = 0.006).
Conclusion:
Our study confirms a decreased ability in turning in PD.
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