The Comparison Effect of Two Pulmonary Rehabilitation Protocols on spirometer indexes and physical performance in patients with COPD.

Respiratory exercise training based on pulmonary Rehabilitation can lead to improvement of physical function and pulmonary function in COPD patients. The aim of this study was to compare the effects of two protocols of inspiratory pressure threshold loading on some spirometer indexes, physical function and dyspnea in COPD patients.

In present semi-experimental research thirty patients with moderate to severe intensity of COPD were selected targetly, and divided randomly into three groups: control (n=10 each), moderate intensity of inspiratory resistive training, high intensity of inspiratory resistive training.. Spirometer indexes, dyspnea, and physical function base on 6MWD test were measured before and after pulmonary rehabilitation protocols. Two way ANOVA was used for statistical analysis (P<0.05).

Following implementation of pulmonary rehabilitation protocols, a significant increase in inspiratory maximal pressure and a significant decrease in leg fatigue after 6MWD, were found in comparison with control group (P<0.05). But there were no significant differences between intervention groups (P>0.05). After pulmonary rehabilitation periods there were no significant differences between FEV, MVV, FEV1/FV, VT 6MWD, and dyspnea levels among control and intervention groups (P>0.05).

These findings suggest that respiratory training can lead to an increase in MIP and decrease in inspiratory muscle metaboreflex. Consequently lead into a decrease in fatigue in active limbs.