期刊名称：Journal of Respiratory and CardioVascular Physical Therapy
印刷版ISSN：2238-4677
出版年度：2015
卷号：2
期号：2
页码：42-51
语种：English
出版社：Journal of Respiratory and CardioVascular Physical Therapy
摘要：Backgroud: The minimum duration of exercise training in patients with Chronic Obstructive Pulmonary Disease (COPD) is still discussed. Objectives: To document, over time, the effects of a lower-limb endurance training program in a patient with COPD, evaluating when changes in the exercise capacity initiate and if these changes stabilize during the intervention period. Methods: A 73-year-old male COPD patient (FEV 1 0.92 L) performed three 30-minute training sessions per week, during 12 weeks, at 70% of peak work rate. A metabolic analyzer system was used to evaluate the participant, at regular intervals, during an incremental, symptom-limited cycle ergometer exercise test. Peak and isowork exercise variables were studied. Data were analyzed with visual analysis, associated with Kappa statistic, two-standard deviation band, celebration line and regression analysis. Significance was accepted at (p<0.05). Results : Peak exercise variables as work rate, carbon dioxide output and ventilation (VE) increased significantly. At a same workload, oxygen uptake (VO 2 ), (VE), perceived exertion and heart rate decreased and peripheral oxygen saturation (SpO 2 ) increased significantly. Changes in exercise capacity verified by VE,VO 2 , perceived exertion and SpO 2 , at isowork condition, were observed in the fourth week of training. Regression analysis showed that VO 2 and respiratory frequency decreased significantly in the course of intervention, while tidal volume and SpO 2 increased during this phase. Conclusions: The participant improved his exercise tolerance after the training program. Changes in exercise capacity initiated in the fourth week of intervention and continued until the end of the training program.
