Effect of Inspiratory Muscles Training on Functional Capacity in Patients with Chronic Heart Failure

Abstract

The aim of this study was to investigate the effect of inspiratory muscles training on parameters of functional capacity(V02max and AT) in CHF. and to 'clarify other possible effects including; sympathetic overactivity and ventilatory function tests and gas exchanges during exercise. Forty male patients with chronic heart failure, Their ages ranges from 50-65 years old with EF :540% in stable condition.. They were randomly divided into two equal groups: IMT, and control group. IMT group participated in inspiratoray muscle training program, three times a week for three months and control group received medical treatment only. The results sho ed a significant increase in the of V02max, AT, and maximum oxygen pulse with significant reduction in VE the IMT group, over the control. While the parameters, peak work load ,and maximum heart rate ,were not significantly altered in both groups. Parameters of HRV, showed a significant increase in HF in the IMT group, with significant reduction of LF/HF where as their was no significant changes in LF with.significant increase in the inspiratory muscle strength(MIP) and, rating of the perceived exertion(Borg scale) ,with. a significant reduction in the resting cardiovascular parameters .