Bavarsad Maryam Bakhshandeh, Shariati Abdolali, Eidani Esmaeil, Latifi Mahmud
Department of Nursing, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran.
Department of Nursing, School of Nursing and Midwifery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Iran J Nurs Midwifery Res. 2015 Sep-Oct;20(5):613-8. doi: 10.4103/1735-9066.164588.
Chronic obstructive pulmonary disease (COPD) is currently the fourth cause of mortality worldwide. Patients with COPD experience periods of dyspnea, fatigue, and disability, which impact on their life. The objective of this study was to investigate the effect of short-term inspiratory muscle training on exercise capacity, exertional dyspnea, and pulmonary lung function.
A randomized, controlled trial was performed. Thirty patients (27 males, 3 females) with mild to very severe COPD were randomly assigned to a training group (group T) or to a control group (group C). Patients in group T received training for 8 weeks (15 min/day for 6 days/week) with flow-volumetric inspiratory exerciser named (Respivol). Each patient was assessed before and after 8 weeks of training for the following clinical parameters: exercise capacity by 6-min walking test (6MWT), exertional dyspnea by Borg scale, and pulmonary lung function by spirometry. Patients used training together with medical treatment. The data were analyzed using paired t-test and independent t-test.
Results showed statistically significant increase in 6MWT at the end of the training from 445.6 ± 22.99 to 491.06 ± 17.67 meters? (P < 0.001) and statistically significant decrease in dyspnea from 3.76 ± 0.64 to 1.13 ± 0.36 (P = 0.0001) in the training group but not in the control group. The values for exercise capacity and dyspnea improved after 8 weeks in group T in comparison with group C (P = 0.001 and P = 0.0001, respectively). No changes were observed in any measure of pulmonary function in both groups.
Short-term inspiratory muscle training has beneficial effects on exercise capacity and exertional dyspnea in COPD patients.
慢性阻塞性肺疾病（COPD）目前是全球第四大致死原因。COPD患者会经历呼吸困难、疲劳和功能障碍时期，这会对他们的生活产生影响。本研究的目的是调查短期吸气肌训练对运动能力、运动性呼吸困难和肺功能的影响。
进行了一项随机对照试验。30例轻度至重度COPD患者（27例男性，3例女性）被随机分为训练组（T组）或对照组（C组）。T组患者使用名为Respivol的流量容积吸气训练器进行为期8周的训练（每天15分钟，每周6天）。在训练8周前后，对每位患者进行以下临床参数评估：通过6分钟步行试验（6MWT）评估运动能力，通过Borg量表评估运动性呼吸困难，通过肺活量测定评估肺功能。患者在训练的同时接受药物治疗。数据采用配对t检验和独立t检验进行分析。
结果显示，训练结束时，训练组的6MWT从445.6±22.99米显著增加至491.06±17.67米（P<0.001），呼吸困难程度从3.76±0.64显著降低至1.13±0.36（P = 0.0001），而对照组无此变化。与C组相比，T组在8周后运动能力和呼吸困难程度有所改善（分别为P = 0.001和P = 0.0001）。两组的任何肺功能指标均未观察到变化。
短期吸气肌训练对COPD患者的运动能力和运动性呼吸困难有有益影响。
