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        Comparison of energy estimates in chronic kidney disease using doubly-labelled water

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        Final Accepted Version (PDF, 339Kb)
        Author
        Sridharan, S
        Wong, J
        Vilar, E
        Farrington, K
        Attention
        2299/19251
        Abstract
        BACKGROUND: Total energy expenditure (TEE) is estimated in clinical practice as a combined measure of resting energy expenditure and physical activity level. Commonly available questionnaires to estimate physical activity level have not been validated in patients with kidney disease using the doubly-labelled water method. METHODS: This prospective, cross-sectional study was conducted on 40 patients with chronic kidney disease stages 1-5 with the objective of validating two physical activity questionnaires: the Recent Physical Activity Questionnaire (RPAQ) and the Stanford 7-day recall questionnaire. TEE was measured using doubly-labelled water technique. TEE was also estimated using predicted resting energy expenditure and estimated physical activity measures from the questionnaires. RESULTS: Measured TEE correlated better with TEE estimated from RPAQ compared to that from the Stanford questionnaire. In Bland-Altman analysis, TEE estimated from RPAQ had the least bias and narrower limits of agreement compared to the measured TEE. A metabolic equivalent of task value of 1.3 for the unaccounted time in RPAQ provided the best approximation of estimated TEE to the measured TEE. CONCLUSIONS: RPAQ is an acceptable questionnaire tool for assessing physical activity level in patients with chronic kidney disease.
        Publication date
        2016-01-27
        Published in
        Journal of human nutrition and dietetics : the official journal of the British Dietetic Association
        Published version
        https://doi.org/10.1111/jhn.12326
        License
        http://creativecommons.org/licenses/by-nc/4.0/
        Other links
        http://hdl.handle.net/2299/19251
        Relations
        School of Life and Medical Sciences
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