Hollewand, A.M. (2014) Validity of an accelerometry based system to determine physical activity in frail elderly aged ≥ 75 years. thesis, Human Movement Sciences.
Full text available on request.Abstract
Objective: To investigate the validity of the DynaPort system to detect physical activity in frail elderly, and to investigate the relationship between frailty and physical activity in these elderly. Design: Cross-sectional study. Setting: Home environment, Zwolle, The Netherlands. Subjects: Home-dwelling frail elderly (GFI score ≥ 4) of 75 years and older. Methods: Activities were observed by two researchers and measured by the DynaPort MicroMod during six sequential hours. Main Outcome Measures: The overall agreement and the sensitivity, specificity and Cohen’s kappa per activity and the relationship between physical activity and frailty. Results: The overall agreement was 74.6% (IQR: 68.1 – 87.5) and a kappa of 0.66 (.49 - .76) was calculated. Sensitivity was considered acceptable for sitting (94.4%, IQR: 80.9 – 98.7), but lying (59.2 %, IQR: 0 – 100.0), standing (69.6%, IQR: 46.9 – 82.0) and locomotion (83.3%, IQR: 50.0 – 100.0) were less accurately measured. Cohen’s kappa’s for Locomotion (.77, IQR: .62 – 1.00), sitting (.69, IQR: .55 - .81) and lying (.66, IQR: .17 – 1.00) were substantial while standing was only moderate (.56, IQR: .35 – 77.3). No relationship (ᵨ=0.04) was found between the level of frailty and physical activity. Conclusions: The DynaPort system was well able to detect sitting in frail elderly in their home environment, but was less accurate in measuring lying, locomotion and standing. In this study no relationship between frailty and physical activity was observed. Keywords: Frailty, objective measurement, physical activity, elderly
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Kamsma, dr. Y.P.T. and Hateren, dr. K.J.J. van |
| Faculty: | Medical Sciences |
| Date Deposited: | 01 Apr 2022 12:26 |
| Last Modified: | 01 Apr 2022 12:26 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3021 |
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