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Total daily energy expenditure in wasted chronic obstructive pulmonary disease patients

European Journal of Clinical Nutrition volume 56, pages 282–287 (2002)Cite this article

Abstract

Objectives: To investigate total daily energy expenditure in chronic obstructive pulmonary disease (COPD) patients during a rehabilitation programme.

Design: Observational study involving a case and a control group.

Subjects: Ten COPD patients (six with body mass index (BMI) <18.5 kg/m2 and four with BMI >18.5 kg/m2) were evaluated for their energy expenditure profile. Four additional healthy age-matched volunteers were also included for methodology evaluation.

Interventions: Measurements of total daily energy expenditure (TEE), resting energy expenditure (REE) and diet-induced thermogenesis (DIT) and energy intake were undertaken by indirect calorimetry and bicarbonate–urea methods and dietary records.

Results: REE in COPD patients was not significantly different from that predicted by the Harris–Benedict equation. Before the exercise day the mean TEE was 1508 kcal/day and physical activity level (PAL as calculated by TEE/REE) was 1.52. On the exercise day the TEE increased to 1568 kcal/day and PAL was 1.60, but neither of these changes were significant. The energy cost of increased physical activity during rehabilitation exercise was estimated to be 191 kcal/day. No significant change was found in DIT between the two patient groups. However, overall energy balances were found to be negative (−363 kcal/day).

Conclusion: The rehabilitation programme did not cause a significant energy demand in COPD patients. TEE in COPD patients was not greater than in free-living healthy subjects. Patients, who were underweight, did not have a higher TEE than patients with normal weight. This suggested that malnutrition in COPD patients was not due to an increased energy expenditure. On the other hand, a significant negative energy balance due to insufficient energy intake was found in seven out of 10 patients.

Sponsorship: The project was inpart supported by the Bristol Myers Squibb Unrestricted Nutrition Grant.

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Author notes

  1. MG Jones

    Present address: The Lakeside Practice, Doncaster, DN6 0JB, UK

  2. NLS Tang and M Elia: Guarantor: N Tang and M Elia.

  3. ML Chung, M Elia, E Hui, CM Lum, JKH Luk, MG Jones and J Woo: Contributors: NLST, JW and ME participated in the protocol design, data interpretation and main writing of the paper. MGJ designed the original study, developed the protocol and contributed to data interpretation. MLC carried out the experiments and participated in data interpretation and writing of paper. EH, CML, JKHL participated in protocol design, clinical data collection, discussion of core ideas and contributed to writing of the paper.

Authors and Affiliations

  1. Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China

    NLS Tang & MG Jones

  2. Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China

    ML Chung & J Woo

  3. Institute of Human Nutrition, University of Southampton, UK

    M Elia

  4. Department of Medicine, Shatin Hospital, Hong Kong, People's Republic of China

    E Hui, CM Lum & JKH Luk

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  1. NLS Tang
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Correspondence to NLS Tang.

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Tang, N., Chung, M., Elia, M. et al. Total daily energy expenditure in wasted chronic obstructive pulmonary disease patients. Eur J Clin Nutr 56, 282–287 (2002). https://doi.org/10.1038/sj.ejcn.1601299

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