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[Effect of nutritional state on cardiopulmonary exercise performance in patients with chronic obstructive pulmonary
Xiaolei Zhang1, Shengqi Li, Li Zhao
1Department of Pulmonary Disease, Second Hospital of China Medical University, Shenyang 110004, China.
Objective:
To explore the effect of nutritional state on cardiopulmonary exercise performance of chronic obstructive pulmonary disease (COPD) patients.
Methods:
43 COPD patients and 20 healthy controls performed incremental cardiopulmonary exercise testing with cycle ergometer. Nutritional assessment and routine lung function studies were performed in all subjects before testing.
Results:
(1) Compared with the normally nourished COPD group, the malnourished group showed greater reduction in Wmax, VO(2)max, O(2)pulsemax, and AT (P < 0.05), whereas VO(2)/W/V(E) and DImax were higher in the malnourished group (P < 0.05). (2) IBW% was positively correlated with VO(2)max, Wmax, O(2)pulsemax, AT (r = 0.696, 0.432, 0.717, 0.822, P < 0.01), and negatively correlated with DImax and VO(2)/W/V(E) (r = -0.450, -0.640, P < 0.01) in COPD patients.
Conclusion:
Malnutrition adversely affected muscle aerobic capacity and exercise tolerance in COPD patients.