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Determination of the applicability of the Fitmate in the assessment of energy expenditure and diet induced thermogenesis in outpatients with chronic obstructive pulmonary disease visiting the nutition center for nutritional depletion and/or involuntary weight loss

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Determination of the applicability of the Fitmate in the assessment of energy expenditure and diet induced thermogenesis in outpatients with chronic obstructive pulmonary disease visiting the nutition center for nutritional depletion and/or involuntary weight loss

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Objective: This study investigates the applicability of the Fitmate in the assessment of resting energy expenditure and diet-induced thermogenesis in outpatients with Diet induced Chronic Obstructive Pulmonary Disease. Methods: 14 healthy subjects between 21 and 57 years old were studied. All subjects underwent a resting energy REE) measurement using the Fitmate and a ventilated hood system. Fat-free mass (FFM) was measured by Dual energy X-ray Absorptiometry (DEXA). Results: There was a variance coefficient found between two test days with the Fitmate (REE) of 18.7 %. The Fitmate underestimated the ventilated hood system and prediction equations of Harris & Benedicht and FAO/WHO/UNU (average: 203, 90 and 59 kcal/day), whereas the ventilated hood system overestimated the prediction equations of Harris & Benedict and FAO/WHO/UNU (average: 113 and 145 kcal/day). For healthy subjects the Fitmate provided 43% accurate measurement, the RMSE was 261 kcal/day, and the percentage bias was -11.8%. The Harris & Benedict and the FAO/WHO/UNU both provided 57% accurate prediction, with an RMSE of 203 kcal/day and a percentage bias(%) of –6.5 % for the Harris & Benedict. The RMSE for the FAO/WHO/UNU was 233 kcal/day and the bias(%) was –8.4%. The diet induced thermogenesis (DIT) in subject A and B ranged from 2.0 to 7.8% of the energy content of the meal. Conclusions: The Fitmate is applicable in the assessment of resting energy expenditure and diet induced thermogenesis, but it needs to be taken in account that both the Fitmate and the ventilated hood system have their limitations. The Fitmate underestimates REE in comparison with the ventilated hood system and the prediction equations of Harris & Benedict and FAO/WHO/UNU. The Ventilated hood overestimates the REE when compared to the prediction equations of Harris & Benedict and FAO/WHO/UNU. Unfortunately it was not possible to test the applicability of the Fitmate in outpatients with COPD. More research is needed about the reproducibility and accuracy of the ventilated hood system, used in our data, so we can be sure that the ventilated hood system may be used as the “ gold standard”.

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OrganisatieHogeschool van Amsterdam
InstituutBewegen, Sport en Voeding
Gepubliceerd in
Jaar2009
TypeBachelorscriptie
TaalEngels

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