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Detection of falls using accelerometers and mobile phone technology
Author(s)Robert Y W Lee, Alison J Carlisle
Journal titleAge and Ageing, vol 40, no 6, November 2011
Pagespp 690-696
Sourcehttp://ageing.oxfordjournals.org/ http://www.bgs.org.uk/
KeywordsFalls ; Preventative medicine ; Assistive technology ; Telephone ; Information technology.
AnnotationThe purpose of the research was to study the sensitivity and specificity of fall detection using mobile phone technology. An experimental investigation was carried out using motion signals detected by a mobile phone. The research was conducted in a laboratory setting, and 18 healthy adults were recruited. Each participant was requested to perform three trials of four different types of simulated falls (forwards, backwards, lateral left and lateral right) and eight other everyday activities (sit-to-stand, stand-to-sit, level walking, walking up- and downstairs, answering the phone, picking up an object and getting up from supine). Acceleration was measured using two devices, a mobile phone and an independent accelerometer attached to the waist of the participants. Bland-Altman analysis showed a higher degree of agreement between the data recorded by the two devices. Using individual upper and lower detection thresholds, the specificity and sensitivity for mobile phone were 0.81 and 0.77, respectively, and for external accelerometer they were 0.82 and 0.96, respectively. In conclusion, fall detection using a mobile phone is a feasible and highly attractive technology for older adults, especially those living alone. It may be best achieved with an accelerometer. (JL).
Accession NumberCPA-120427004 A
ClassmarkOLF: LK2: M: UJ: UVB

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