Validation of Activity Tracking Procedures in Elderly Patients after Operative Treatment of Proximal Femur Fractures
Joint Authors
Brønd, Jan Christian
Madsen, Carsten Fladmose
Holsgaard-Larsen, Anders
Lauritsen, Jens
Izadpanah, Kaywan
Schmal, Hagen
Source
Rehabilitation Research and Practice
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-06-19
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Background.
Early postoperative physical activity in elderly patients suffering from proximal femoral fractures may reduce mortality.
We hypothesized that activity trackers can reliably and objectively monitor the in-hospital mobilization, correlating with functional independence and quality of life.
Methods.
Three different tracker types (Fitbit™ flex, Misfit™ Shine, and Axivity AX3) at three locations (wrist, ankle, and femur) recorded steps and signal vector magnitudes (SVM) in 22 patients.
They were 81±8 years old, were equally distributed between the sexes, and had an ASA score of 2.5±0.6.
Single protocoled activity events (n=191) were clinically categorized into 4 levels and correlated with the monitored signals.
Additionally, 2±1 and 8±3 days after the operation, the EuroQol-5D and the Barthel-20 index supplemented this data.
Results.
All measurements at the wrist (Fitbit, Misfit) resulted in unacceptable accuracy; however, sensitivity and specificity reached around 90% using the Misfit at the ankle.
Applying this combination, the correlation between real and measured steps (R2 = 0.99) and the category discrimination were statistically significant (p<0.002).
A discriminant analysis featured the calculation of four activity levels based on SVM measurements using the Axivity tracker at the femur.
A cluster analysis showed a 100% agreement between the clinically observed and the calculated activity levels.
The amount of active minutes or periods and both the EuroQol-5D and the Barthel-20 indices significantly increased between the analyzed time points after the operation.
However, only the Barthel-20 was associated with the measured activity levels (p<0.01).
Conclusion.
The Misfit and the Axivity trackers can reliably monitor activity in elderly patients after operative treatment of proximal femur fractures.
However, the wear location is decisive.
Objectively measured activity correlated with functional independence and quality of life.
American Psychological Association (APA)
Schmal, Hagen& Holsgaard-Larsen, Anders& Izadpanah, Kaywan& Brønd, Jan Christian& Madsen, Carsten Fladmose& Lauritsen, Jens. 2018. Validation of Activity Tracking Procedures in Elderly Patients after Operative Treatment of Proximal Femur Fractures. Rehabilitation Research and Practice،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1212723
Modern Language Association (MLA)
Schmal, Hagen…[et al.]. Validation of Activity Tracking Procedures in Elderly Patients after Operative Treatment of Proximal Femur Fractures. Rehabilitation Research and Practice No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1212723
American Medical Association (AMA)
Schmal, Hagen& Holsgaard-Larsen, Anders& Izadpanah, Kaywan& Brønd, Jan Christian& Madsen, Carsten Fladmose& Lauritsen, Jens. Validation of Activity Tracking Procedures in Elderly Patients after Operative Treatment of Proximal Femur Fractures. Rehabilitation Research and Practice. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1212723
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212723