Bronşektazili Hastalarda Maksimal Egzersiz Kapasitesini Etkileyen Faktörlerin Belirlenmesi
Abstract
There are limited numbers of studies about the factors affecting maximal exercise capacity in patients with bronchiectasis and none of them used field tests to evaluate maximal exercise capacity. The purpose of this study was to assess lung function, respiratory muscle strength and endurance, health related quality of life and physical characteristics of bronchiectatic patients, and investigate their effects on maximal exercise capacity evaluated using incremental shuttle walk test (ISWT) as a field test. Forty one patients with clinically stable bronchiectasis were included in this study. Subjects? demographic and physical characteristics were recorded. Pulmonary function, respiratory muscle strength and endurance, peripheral muscle strength and endurance, dyspnea and fatigue perceptions, exercise capacity, anxiety and depression level, and health related quality of life were assessed. The ISWT was used to evaluate maximal exercise capacity. Endurance shuttle walk test was performed. Majority of the patients? maximal exercise capacity was found to be impaired. The ISWT distance was found to be related with age (r=-0.472, p=0.001), gender (p=0.520, p=0.001), forced vital capacity (FVC) (r=0.545, p=0.001), and forced expiratory volume in one second (FEV1) (r=0.651, p=0.001). Multiple linear regression analysis indicated that age and gender were identified as independent predictors of the maximal exercise capacity, explaining 42% of the variance. The regression equation was ?ISWT distance (m) = 613.5+(genderx147.8)?(agex4.4) (female:0, male:1). In conclusion, maximal exercise capacity in clinically stable patients with bronchiectasis was independently affected from age and gender. However, respiratory function, dyspnea, fatigue and health related quality of life did not have an independent effect.