Abstract:
PURPOSE:We conducted a randomised controlled trial to assess the effects of daily breathing pattern changes to stable patients with COPD excluding the confounding factors of inspiratory muscle mobilization, by ensuring the load intensities of two inspiratory training devices were equal. PATIENTS AND METHODS:Sixty patients with COPD were randomised to three groups: resistive-IMT group (T-IMT, 21 patients), threshold-IMT (R-IMT, 19 patients), and a control group (20 patients). Inspiratory load intensity for both methods was set at 60% of maximal inspiratory pressure (MIP), a measure of inspiratory muscle strength, which, along with health-related quality of life (HRQoL), degree of dyspnoea, and exercise capacity, were conducted before and after 8 weeks of daily IMT. RESULTS:At 8 weeks, there was no significantly difference of MIP between the R- and T-IMT groups (P > 0.05). Chronic Respiratory Disease Questionnaire and Transition Dyspnea Index scores improved significantly after each training program compared with controls (P < 0.05), and R-IMT was significant better (P < 0.05). R-IMT was better than T-IMT in performance of exercise (P < 0.05). CONCLUSIONS:In summary, in clinically stable patients with COPD, 8 weeks of R-IMT was superior to 8 weeks of equal-intensity T-IMT in improving HRQoL, degree of dyspnoea, and exercise capacity.
journal_name
Respir Medjournal_title
Respiratory medicineauthors
Wu W,Guan L,Zhang X,Li X,Yang Y,Guo B,Ou Y,Lin L,Zhou L,Chen Rdoi
10.1016/j.rmed.2017.10.001subject
Has Abstractpub_date
2017-11-01 00:00:00pages
84-91eissn
0954-6111issn
1532-3064pii
S0954-6111(17)30340-2journal_volume
132pub_type
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