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Prevalence of an elevated resting energy expenditure in patients with chronic obstructive pulmonary disease in relation to body composition and lung function.
Eur J Clin Nutr 1998; 52(6):396-401EJ

Abstract

OBJECTIVE

This study describes the prevalence and characteristics of an elevated resting energy expenditure (REE) in patients with chronic obstructive pulmonary disease (COPD).

DESIGN AND SETTING

Patients were consecutively admitted to an in-patient pulmonary rehabilitation centre.

SUBJECTS

The study group consisted of 172 (123 males) clinically stable patients with COPD, age mean (s.d.) 64(10) y).

INTERVENTIONS

REE was assessed by indirect calorimetry (ventilated hood) and adjusted for the influence of fat-free mass (FFM; measured by bioelectrical impedance analysis) using the linear regression equations of REE on FFM generated in 92 healthy age-matched subjects (58 males, age 67(8) y) for men and women separately. The predicted REE adjusted for FFM (REEFFM) was obtained by using the FFM of each individual patient in the linear regression equation of REE on FFM generated in the healthy control group.

RESULTS

26% of the patients were hypermetabolic (defined as REE > 110% REEFFM), characterized by a lower age (60 (10) vs 65 (9) y) and a lower total lung capacity (TLC; 122(27)vs 139(28) %pred) compared to normometabolic patients (P < 0.001). The prevalence of FFM-depletion was equal among normo- and hypermetabolic patients: 36% vs 33% respectively. Depleted patients expressed however a significantly higher residual volume/TLC ratio and a lower maximal inspiratory mouth pressure independently of hypermetabolism (P < 0.05). In contrast, on base of the Harris & Benedict (HB) prediction equations, which do not take body composition into account, 54% of the patients were hypermetabolic (REE > 110% REEHB), characterized by a higher age and a lower body mass and FFM (P < 0.05).

CONCLUSIONS

Hypermetabolism commonly occurs in COPD, characterized by less hyperinflation at rest, in contrast to the suggested contribution of an elevated oxygen cost of breathing (OCB) to hypermetabolism in COPD. The higher hyperinflation at rest in FFM-depleted patients independently of hypermetabolism suggests a higher OCB during activities, contributing to the elevated total daily energy expenditure previously reported in COPD. The HB-equations overestimate the prevalence of hypermetabolism and link hypermetabolism incorrectly to aging and depletion.

Authors+Show Affiliations

Department of Pulmonology, University Hospital Maastricht, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

9683390

Citation

Creutzberg, E C., et al. "Prevalence of an Elevated Resting Energy Expenditure in Patients With Chronic Obstructive Pulmonary Disease in Relation to Body Composition and Lung Function." European Journal of Clinical Nutrition, vol. 52, no. 6, 1998, pp. 396-401.
Creutzberg EC, Schols AM, Bothmer-Quaedvlieg FC, et al. Prevalence of an elevated resting energy expenditure in patients with chronic obstructive pulmonary disease in relation to body composition and lung function. Eur J Clin Nutr. 1998;52(6):396-401.
Creutzberg, E. C., Schols, A. M., Bothmer-Quaedvlieg, F. C., & Wouters, E. F. (1998). Prevalence of an elevated resting energy expenditure in patients with chronic obstructive pulmonary disease in relation to body composition and lung function. European Journal of Clinical Nutrition, 52(6), pp. 396-401.
Creutzberg EC, et al. Prevalence of an Elevated Resting Energy Expenditure in Patients With Chronic Obstructive Pulmonary Disease in Relation to Body Composition and Lung Function. Eur J Clin Nutr. 1998;52(6):396-401. PubMed PMID: 9683390.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Prevalence of an elevated resting energy expenditure in patients with chronic obstructive pulmonary disease in relation to body composition and lung function. AU - Creutzberg,E C, AU - Schols,A M, AU - Bothmer-Quaedvlieg,F C, AU - Wouters,E F, PY - 1998/7/31/pubmed PY - 1998/7/31/medline PY - 1998/7/31/entrez SP - 396 EP - 401 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 52 IS - 6 N2 - OBJECTIVE: This study describes the prevalence and characteristics of an elevated resting energy expenditure (REE) in patients with chronic obstructive pulmonary disease (COPD). DESIGN AND SETTING: Patients were consecutively admitted to an in-patient pulmonary rehabilitation centre. SUBJECTS: The study group consisted of 172 (123 males) clinically stable patients with COPD, age mean (s.d.) 64(10) y). INTERVENTIONS: REE was assessed by indirect calorimetry (ventilated hood) and adjusted for the influence of fat-free mass (FFM; measured by bioelectrical impedance analysis) using the linear regression equations of REE on FFM generated in 92 healthy age-matched subjects (58 males, age 67(8) y) for men and women separately. The predicted REE adjusted for FFM (REEFFM) was obtained by using the FFM of each individual patient in the linear regression equation of REE on FFM generated in the healthy control group. RESULTS: 26% of the patients were hypermetabolic (defined as REE > 110% REEFFM), characterized by a lower age (60 (10) vs 65 (9) y) and a lower total lung capacity (TLC; 122(27)vs 139(28) %pred) compared to normometabolic patients (P < 0.001). The prevalence of FFM-depletion was equal among normo- and hypermetabolic patients: 36% vs 33% respectively. Depleted patients expressed however a significantly higher residual volume/TLC ratio and a lower maximal inspiratory mouth pressure independently of hypermetabolism (P < 0.05). In contrast, on base of the Harris & Benedict (HB) prediction equations, which do not take body composition into account, 54% of the patients were hypermetabolic (REE > 110% REEHB), characterized by a higher age and a lower body mass and FFM (P < 0.05). CONCLUSIONS: Hypermetabolism commonly occurs in COPD, characterized by less hyperinflation at rest, in contrast to the suggested contribution of an elevated oxygen cost of breathing (OCB) to hypermetabolism in COPD. The higher hyperinflation at rest in FFM-depleted patients independently of hypermetabolism suggests a higher OCB during activities, contributing to the elevated total daily energy expenditure previously reported in COPD. The HB-equations overestimate the prevalence of hypermetabolism and link hypermetabolism incorrectly to aging and depletion. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/9683390/Prevalence_of_an_elevated_resting_energy_expenditure_in_patients_with_chronic_obstructive_pulmonary_disease_in_relation_to_body_composition_and_lung_function_ L2 - http://dx.doi.org/10.1038/sj.ejcn.1600571 DB - PRIME DP - Unbound Medicine ER -