title: Relationship between nutritional risk and exercise capacity in severe chronic obstructive pulmonary disease in male patients.
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 VO2 (peak oxygen uptake), peak O2 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 VO2, peak O2 pulse, or peak load (r<0, P<0.05).
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Respiratory Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
authors.forename: Xizheng
authors.initials: X
authors.lastname: Shan
authors.affiliation: Department of Pulmonary Circulation, Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
authors.forename: Jinming
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Respiratory Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
authors.forename: Yanrong
authors.initials: Y
authors.lastname: Luo
authors.affiliation: Department of Respiratory Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Respiratory Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
authors.forename: Zhiqing
authors.initials: Z
authors.lastname: Han
authors.affiliation: Department of Respiratory Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
authors.forename: Hailing
authors.initials: H
authors.lastname: Li
mesh_terms: D000368:Aged; D001784:Blood Gas Analysis; D015992:Body Mass Index; D001835:Body Weight; D005080:Exercise Test; D017079:Exercise Tolerance; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D015596:Nutrition Assessment; D009752:Nutritional Status; D010101:Oxygen Consumption; D011237:Predictive Value of Tests; D011653:Pulmonary Diffusing Capacity; D029424:Pulmonary Disease, Chronic Obstructive / Q000097:blood / Q000175:diagnosis / Q000503:physiopathology*; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index
keywords: cardiopulmonary exercise testing; chronic obstructive pulmonary disease; conventional pulmonary function testing; exercise capacity; nutritional risk