Title |
Kinect-based choice reaching and stepping reaction time tests for clinical and in-home assessment of fall risk in older people: a prospective study
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Published in |
European Review of Aging and Physical Activity, January 2016
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DOI | 10.1186/s11556-016-0162-2 |
Pubmed ID | |
Authors |
Andreas Ejupi, Yves J. Gschwind, Matthew Brodie, Wolfgang L. Zagler, Stephen R. Lord, Kim Delbaere |
Abstract |
Quick protective reactions such as reaching or stepping are important to avoid a fall or minimize injuries. We developed Kinect-based choice reaching and stepping reaction time tests (Kinect-based CRTs) and evaluated their ability to differentiate between older fallers and non-fallers and the feasibility of administering them at home. A total of 94 community-dwelling older people were assessed on the Kinect-based CRTs in the laboratory and were followed-up for falls for 6 months. Additionally, a subgroup (n = 20) conducted the Kinect-based CRTs at home. Signal processing algorithms were developed to extract features for reaction, movement and the total time from the Kinect skeleton data. Nineteen participants (20.2 %) reported a fall in the 6 months following the assessment. The reaction time (fallers: 797 ± 136 ms, non-fallers: 714 ± 89 ms), movement time (fallers: 392 ± 50 ms, non-fallers: 358 ± 51 ms) and total time (fallers: 1189 ± 170 ms, non-fallers: 1072 ± 109 ms) of the reaching reaction time test differentiated well between the fallers and non-fallers. The stepping reaction time test did not significantly discriminate between the two groups in the prospective study. The correlations between the laboratory and in-home assessments were 0.689 for the reaching reaction time and 0.860 for stepping reaction time. The study findings indicate that the Kinect-based CRT tests are feasible to administer in clinical and in-home settings, and thus represents an important step towards the development of sensor-based fall risk self-assessments. With further validation, the assessments may prove useful as a fall risk screen and home-based assessment measures for monitoring changes over time and effects of fall prevention interventions. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 98 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Master | 19 | 19% |
Student > Bachelor | 15 | 15% |
Researcher | 12 | 12% |
Student > Ph. D. Student | 12 | 12% |
Student > Doctoral Student | 6 | 6% |
Other | 12 | 12% |
Unknown | 22 | 22% |
Readers by discipline | Count | As % |
---|---|---|
Nursing and Health Professions | 20 | 20% |
Medicine and Dentistry | 12 | 12% |
Engineering | 8 | 8% |
Sports and Recreations | 8 | 8% |
Computer Science | 7 | 7% |
Other | 14 | 14% |
Unknown | 29 | 30% |