輕中度和重度肺功能障礙慢性阻塞性肺疾病患者運動自我效能和運動測試結果比較之探討

The purpose of this study was to examine the impact of lung function impairment on exercise self-efficacy and exercise test results in chronic obstructive pulmonary disease (COPD) patients. A descriptive and correlation design was used. Data was collected by means of a treadmill exercise test, a lung function test, and a structured questionnaires, which included a Self-Efficacy Information Source Scale, a Treadmill Self-Efficacy Scale, a Dyspnea Scale, and a State-Trait Anxiety Inventory. Stepwise regression, chi-square, and test were used for data analysis. A total of 48 subjects who met the selection criteria were selected from four mediumsize hospitals by purposive sampling. Results of the study demonstrated that the mild-moderate group had higher exercise self-efficacy, more positive performance accomplishments, and higher peak workload than the severe group. However, the average peak workload for all subjects was extremely low (2.94 mets) and the majority of subjects (72.9%) under-estimated their treadmill performance. The patients past experience was the most important predictor in self-efficacy for both groups. The findings of this study have implications in the development of individualized nursing interventions to help COPD patients improve their exercise performance.