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      International Journal of COPD (submit here)

      This international, peer-reviewed Open Access journal by Dove Medical Press focuses on pathophysiological processes underlying Chronic Obstructive Pulmonary Disease (COPD) interventions, patient focused education, and self-management protocols. Sign up for email alerts here.

      39,063 Monthly downloads/views I 2.893 Impact Factor I 5.2 CiteScore I 1.16 Source Normalized Impact per Paper (SNIP) I 0.804 Scimago Journal & Country Rank (SJR)

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      Relationship between nutritional risk and exercise capacity in severe chronic obstructive pulmonary disease in male patients

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          Abstract

          Objective

          The nutritional status of chronic obstructive pulmonary disease (COPD) patients is associated with their exercise capacity. In the present study, we have explored the relationship between nutritional risk and exercise capacity in severe male COPD patients.

          Methods

          A total of 58 severe COPD male patients were enrolled in this study. The patients were assigned to no nutritional risk group (n=33) and nutritional risk group (n=25) according to the Nutritional Risk Screening (NRS, 2002) criteria. Blood gas analysis, conventional pulmonary function testing, and cardiopulmonary exercise testing were performed on all the patients.

          Results

          Results showed that the weight and BMI of the patients in the nutritional risk group were significantly lower than in the no nutritional risk group ( P<0.05). The pulmonary diffusing capacity for carbon monoxide of the no nutritional risk group was significantly higher than that of the nutritional risk group ( P<0.05). Besides, the peak VO 2 (peak oxygen uptake), peak O 2 pulse (peak oxygen pulse), and peak load of the nutritional risk group were significantly lower than those of the no nutritional risk group ( P<0.05) and there were significantly negative correlations between the NRS score and peak VO 2, peak O 2 pulse, or peak load ( r<0, P<0.05).

          Conclusion

          The association between exercise capacity and nutritional risk based on NRS 2002 in severe COPD male patients is supported by these results of this study.

          Most cited references35

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          ATS/ACCP statement on cardiopulmonary exercise testing.

          Robert M. Ross (2003)
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            Nutritional depletion in relation to respiratory and peripheral skeletal muscle function in out-patients with COPD.

            Annemie M. W. J. Schols, W C Baken, E Wouters … (1994)
            Although increasing attention has been paid to nutritional aspects in chronic obstructive pulmonary disease (COPD), limited information is available regarding the prevalence and consequences of nutritional depletion in a random out-patient COPD population. We studied body composition in relation to respiratory and peripheral skeletal muscle function in 72 COPD patients (mean (SD) forced expiratory volume in one second (FEV1) 53 (15) % predicted), who came to the lung function laboratory for routine lung function measurements. Patients were characterized by the degree of body weight loss and fat-free mass depletion. According to this definition, 14% of the group suffered from both loss of body weight and depletion of fat-free mass, whereas 7% had one of these conditions. We found that tissue depletion was concomitant with lower values for respiratory and peripheral skeletal muscle strength (46.0 (27.2) vs 77.1 (29.8) kg), and a significantly lower transfer coefficient for carbon monoxide (KCO 64.9 (16.2) vs 81.9 (24.5) % pred). Stratification by KCO ( 80%) also revealed significantly lower values for fat-free mass and higher values for intrathoracic gas volumes, total lung capacity (TLC) and residual volume (RV) in the group with a KCO < 60% pred. Analysis of covariance, taking fat-free mass as covariate, indicated an independent contribution of KCO on maximal inspiratory mouth pressure (PImax) but not on peripheral skeletal muscle strength. It is concluded that a substantial number of COPD out-patients suffer from nutritional depletion, preferentially affecting peripheral skeletal muscle function.
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              Nutritional status and mortality in chronic obstructive pulmonary disease.

              Keith R G Martin, Robert G. K. Donald, P Macklem … (1996)
              The role of nutritional status in the prognosis of subjects with severe chronic obstructive pulmonary disease was studied in a cohort of Canadian men and women followed for 3 to 5 yr. A total of 348 subjects who were recruited for a study of negative pressure ventilation were evaluated for lung function and body weight, and a subset who entered hospital for the study (n=184) had baseline measures of diffusing capacity, maximal inspiratory and expiratory mouth pressure (PImax and PEmax), and blood gases. Predictors of survival were analyzed using Cox regression models. In the total cohort, low body mass index (BMI) and use of home oxygen were independently associated with reduced survival. In the hospitalized group, predictors of respiratory mortality were elevated PaCO2 and low BMI, PImax, and diffusing capacity. PaO2 (measured on oxygen therapy), FEV1, PEmax, age, smoking behavior, and gender were not associated with survival. The predictors of total mortality were similar, except that BMI was no longer significant. In conclusion, low body weight, a potentially modifiable factor, was associated with respiratory mortality, but whether it has a casual effect or is a marker of declining health can only be resolved through an intervention trial.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Int J Chron Obstruct Pulmon Dis
                Journal ID (iso-abbrev): Int J Chron Obstruct Pulmon Dis
                Journal ID (publisher-id): International Journal of COPD
                Title: International Journal of Chronic Obstructive Pulmonary Disease
                Publisher: Dove Medical Press
                ISSN (Print): 1176-9106
                ISSN (Electronic): 1178-2005
                Publication date Collection: 2015
                Publication date (Electronic): 23 June 2015
                Volume: 10
                Pages: 1207-1212
                Affiliations
                [1 ]Department of Respiratory Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
                [2 ]Department of Pulmonary Circulation, Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
                Author notes
                Correspondence: Jinming Liu, Department of Pulmonary Circulation, Pulmonary Hospital, Tongji University School of Medicine, Zhengmin Road 507, Yangpu District, Shanghai 200433, People’s Republic of China, Tel +86 21 6511 5006, Email jinmingliujml@ 123456126.com
                Article
                Publisher ID: copd-10-1207
                DOI: 10.2147/COPD.S82082
                PMC ID: 4484657
                SO-VID: 47930314-1e6c-4209-8e2d-b8d2d7323020
                Copyright © © 2015 Shan et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License
                License:

                The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                History
                Categories
                Subject: Original Research

                ScienceOpen disciplines: Respiratory medicine
                Keywords: nutritional risk,exercise capacity,chronic obstructive pulmonary disease,conventional pulmonary function testing,cardiopulmonary exercise testing
                Data availability:
                ScienceOpen disciplines: Respiratory medicine
                Keywords: nutritional risk, exercise capacity, chronic obstructive pulmonary disease, conventional pulmonary function testing, cardiopulmonary exercise testing

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