Effect of treadmill training on inspiratory function and its association with improvement of exercise capacity in patients with chronic obstructive pulmonary disease
10.3760/cma.j.issn.0254-9026.2011.08.002
- VernacularTitle:踏车锻炼对慢性阻塞性肺疾病患者吸气肺功能的影响及与运动能力改善的关系
- Author:
Rui CHEN
;
Gong CHEN
;
Xiaoqun MAO
;
Xin CHEN
- Publication Type:Journal Article
- Keywords:
Pulmonary disease,chronic obstructive;
Pulmonary rehabilitation;
Exercise training;
Dyspnea
- From:
Chinese Journal of Geriatrics
2011;30(8):621-625
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of treadmill training on inspiratory function and its association with improvement of exercise capacity in patients with chronic obstructive pulmonary disease (COPD). Methods The 12 moderate to severe COPD patients were allocated to lower-limb exercise training for 12weeks. The routine tests of pulmonary ventilation function, diffusion function,lung volume, peak inspiratory flow (PIF), maximal inspiratory pressure (MIP), symptom-limited progressive cycle ergometer exercise tests and constant work rate exercise tests were administered before and after the training program. During the constant work rate exercise tests, tidal breathing flow volume (TBFV) curves were recorded every 1 mir. Results After treadmill training, the exercise duration (T) (t=7. 357, P＜0. 001), peak work rate (WRpeak) (t=3. 614, P＜0.05), MIP (t=4.754, P＜0. 001) and PIF (t=2. 440, P＜0. 05) increased significantly. The tidal PIF (t=- 2.747, P＜0.05) and peak expiratory flow (PEF) (t = - 4.487, P＜ 0.05 ) decreased significantly at isotime. Maxium inspiratory flow reserve (△FLOWinsp) (t = 2. 755, P ＜ 0. 05 ) increased significantly at isotime, and maxium expiratory flow reserve (△FLOWexp) (t = 1. 326, P ＞ 0.05)showed no significant changes; The△T were positively correlated with △MIP (r=0. 613, P＜0. 05),△PIF (r=0.497, P＜0.05) and △FLOWinsp (r=0.592, P＜0.05). Conclusions Lower limb exercise training improves inspiratory function of COPD patients. The improvement of exercise endurance in moderate to severe COPD patients after lower limb exercise training is due to increases of inspiratory muscle strength, maxium PIF and inspiratory flow reserve.
