Effects of High Intensity Inspiratory Muscle Training on Exercise Capacity in Patients With Bronchiectasis
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 45
- 试验地点
- 2
- 主要终点
- Exercise capacity using incremental shuttle walk test and 6-minute walk test
研究概览
简要总结
Reduced exercise tolerance is commonly reported in patients with bronchiectasis. The purpose of this study is to evaluate the effects of high-intensity inspiratory muscle training (High-IMT) and sham High-IMT (control) on exercise capacity, respiratory muscle function (strength and endurance) and health related quality of life in patients with bronchiectasis.
详细描述
Bronchiectasis often demonstrates decreased exercise tolerance, marked dyspnea and fatigue. The causes are multifactorial and include altered pulmonary mechanics, inefficient gas exchange, decreased muscle mass, and psychological status, which all lead to a progressive detraining effect. Essentially both the pathology and the functional manifestations of bronchiectasis increase the demand for inspiratory muscle work and that contribute to dyspnea and exercise limitation.
In recent studies reduced strength of respiratory muscles are investigated in bronchiectasis and can be contribute the exercise limitation. Additionally IMT has shown to improve respiratory muscle function, exercise tolerance and dyspnea in patients with bronchiectasis. Despite this, the number of studies are inadequate and so the optimal training protocol remains still to be defined. In this study the researchers want to investigate the effects of high-intensity inspiratory muscle training in functional results in patients with bronchiectasis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •diagnosis of bronchiectasis with high resolution computed tomography
- •being 18-65 years of age
- •being able to walk and co-operate
排除标准
- •acute exacerbation or change in drugs or usage of antibiotics in last 3 weeks
- •neurological disease, severe orthopaedic problem or advanced heart failure
研究组 & 干预措施
High-IMT group
Intervention group receive supervised training sessions three times per week for 8 weeks. Each sessions lasted 21 minutes and comprised seven cycles of 2 minutes of breathing on an inspiratory threshold device followed by 1 minute of rest. High-IMT was performed at the maximal load tolerable for each 2-minute work interval and was progressively increased over the training period.
干预措施: Inspiratory muscle training group (Device)
Control group
Control group was prescribed at 10% of baseline maximal inspiratory pressure, and remained at this level during all training sessions for 8 weeks.
干预措施: Inspiratory muscle training group (Device)
结局指标
主要结局
Exercise capacity using incremental shuttle walk test and 6-minute walk test
时间窗: Baseline to 8 weeks
* The incremental shuttle walk test will be performed in an enclosed corridor. Patients are required to walk back and forth, turning around two cones placed 9 meters apart making the shuttle distance 10 meters long. Patients will follow the rhythm dictated by the audio signal. * 6-minute walk test will be performed in a long, straight, enclosed corridor 30 meters in length. Patients are required to walk in their walking speed with standardised instructions. The distance walked by subjects during 6 minutes will be recorded.
次要结局
- Health related quality of life is assessed with Leicester Cough Questionnaire(Baseline to 8 weeks)
- Dyspnea severity is assessed with The Modified Medical Research Council Dyspnea Scale (MMRC)(Baseline to 8 weeks)
- Fatigue severity is assessed with Fatigue Severity Index(Baseline to 8 weeks)
- Respiratory muscle strength(Baseline to 8 weeks)
- Respiratory muscle endurance(Baseline to 8 weeks)
- Severity of disease is assessed with Bronchiectasis Severity Index(Baseline to 8 weeks)
研究者
Ozge OZER
Principal Investigator
Hacettepe University