Spijkerman, A. (Anouk) (2014) “Accelerometer validation for measuring energy expenditure in frail elderly”. thesis, Human Movement Sciences.
Full text available on request.Abstract
Energy expenditure of older people seems to be a possible predictor for frailty and therefore a valid method for monitoring daily energy expenditure in frail elderly is desired. The objectives of this study were to investigate whether the DynaPort MicroMod system (McRoberts®, The Hague, The Netherlands) can be used as an objective instrument for measuring energy expenditure in frail elderly and to investigate relations between energy expenditure values as measured with the DynaPort MicroMod and the scores on the widely used subjective Groningen Frailty Index (GFI). Metabolic Equivalent of Tasks (METs) were measured in 18 frail elderly (mean age, 83.4 ± 5.0 years) over a six hour period in their home environment with two techniques: the DynaPort MicroMod and observations of two researchers based on the Compendium of Physical Activities. Agreement between the MET-values of the two observers showed an average concordance correlation coefficient (CCC) of 0.68 (± 0.16) with an average precision of 0.70 (± 0.16) and an average accuracy of 0.97 (± 0.04). Agreement between the DynaPort and the observers had an average CCC of 0.40 (± 0.23). An average precision of 0.49 (± 0.24) and an average accuracy of 0.80 (± 0.16) were found. No significant correlations were found between the GFI scores of the subjects and any of the energy expenditure parameters. These outcomes are not favourable for the DynaPort system as a measuring instrument for frailty. However, a statement that the DynaPort is a poor instrument cannot be simply made: it is questionable whether the Compendium is an accurate method and can serve as a ‘golden standard’. A cause of concern is the prevailing sedentary behavior of the elderly in this pilot study. Keywords: accelerometer, aged, energy expenditure, frailty, validation
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Kamsma, dr. Y.P.T. and Hateren, dr. K.J.J. van |
| Faculty: | Medical Sciences |
| Date Deposited: | 06 Apr 2022 08:12 |
| Last Modified: | 06 Apr 2022 08:12 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3049 |
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