TY - JOUR
T1 - Body postural sway analysis in older people with different fall histories
AU - Ghahramani, Maryam
AU - Stirling, David
AU - naghdy, fazel
AU - Naghdy, Golshah
AU - Potter, Janette
N1 - Funding Information:
Acknowledgements The authors thank Melissa Roach, the clinical physiotherapist, for her supervision during the experimental tests. Miss Maryam Ghahramani, the chief investigator, did this study as a part of her PhD. thesis. Her PhD scholarship was funded by Illawarra Shoalhaven Local Health District (ISLHD). The authors wish to acknowledge that Bulli Hospital, Bulli, Australia, and Wollongong Hospital, Wollongong, Australia, provided this study with older participants.
Publisher Copyright:
© 2018, International Federation for Medical and Biological Engineering.
PY - 2019/9/26
Y1 - 2019/9/26
N2 - A cross-sectional study of postural sway analysis in older non-fallers, once-fallers and multiple-fallers using five common standing tests was conducted. Eighty-six older subjects with an average age of 80.4 years (SD ± 7.9) participated in the study. The angular rotation and velocity of the trunk of the participants in the roll (lateral) and pitch (sagittal) planes were recorded using an inertial sensor mounted on their lower backs. The Gaussian Mixture Models (GMM), Expectation-Maximisation (EM) and the Minimum Message Length (MML) algorithms were applied to the acquired data to obtain an index indicative of the body sway. The standing with feet together and standing with one foot in front, sway index distinguished older fallers from non-fallers with specificity of 75.7% and 77.7%, respectively, and sensitivity of 78.6% and 82.1%, respectively. This compares favourably with the Berg Balance Scales (BBS) with specificity of 70.5% and sensitivity of 75.3%. The results suggest that the proposed method has potential as a protocol to diagnose balance disorder in older people.
AB - A cross-sectional study of postural sway analysis in older non-fallers, once-fallers and multiple-fallers using five common standing tests was conducted. Eighty-six older subjects with an average age of 80.4 years (SD ± 7.9) participated in the study. The angular rotation and velocity of the trunk of the participants in the roll (lateral) and pitch (sagittal) planes were recorded using an inertial sensor mounted on their lower backs. The Gaussian Mixture Models (GMM), Expectation-Maximisation (EM) and the Minimum Message Length (MML) algorithms were applied to the acquired data to obtain an index indicative of the body sway. The standing with feet together and standing with one foot in front, sway index distinguished older fallers from non-fallers with specificity of 75.7% and 77.7%, respectively, and sensitivity of 78.6% and 82.1%, respectively. This compares favourably with the Berg Balance Scales (BBS) with specificity of 70.5% and sensitivity of 75.3%. The results suggest that the proposed method has potential as a protocol to diagnose balance disorder in older people.
KW - Balance assessment
KW - Inertial sensor
KW - Older people
KW - Postural sway analysis
UR - http://www.scopus.com/inward/record.url?scp=85054037759&partnerID=8YFLogxK
U2 - 10.1007/s11517-018-1901-5
DO - 10.1007/s11517-018-1901-5
M3 - Article
SN - 1741-0444
VL - 57
SP - 533
EP - 542
JO - Medical and Biological Engineering and Computing
JF - Medical and Biological Engineering and Computing
IS - 2
ER -