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| Relationship between respiratory symptoms level and lower extremity functional performance for patients with stable chronic obstructive pulmonary disease |
| WU Zhenyun NIU Mei′e HAN Yanxia QIAN Hongying ZHANG Xiuqin WANG Ling |
| Department of Respiration, the First Affiliated Hospital of Soochow University, Jiangsu Province, Suzhou 215000, China |
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Abstract Objective To explore the relationship between respiratory symptoms level and lower extremity functional performance for patients with stable chronic obstructive pulmonary disease（COPD）. Methods 109 patients of stable COPD outpatients in the First Affiliated Hospital of Soochow University from September 2016 to January 2017 were investigated by homemade general information questionnaire，chronic obstructive pulmonary disease assessment test (CAT), modified medical research council dyspnea scale (MMRC) and six-minute walking test(6MWT). The MMRC, CAT and six-minute walking distance (6MWD), and the correlations of variables were analyzed. Results 6MWD of patients with stable COPD was (440.97±91.55）m, and univariate analysis showed that the lower extremity functional performance was affected by age, acute attack times, course of disease and severity of disease (P < 0.01). The lower extremity functional performance was negatively correlated with the MMRC, the total scores of CAT, feeling of climbing or climbing up a layer of stairs, household activities and confidence level away from home (r < 0, P < 0.01). Hierarchical regression analysis showed that the respiratory symptoms level could influence the lower extremity functional performance of the total variation 10%. Conclusion Strengthen the management of respiratory symptoms in patients with stable COPD and reduce attack times of patients, which can help to improve lower extremity functional performance.
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