Effect of the Environment on Six-minute Walk Test Performance in Individuals With Alpha-1 Antitrypsin Deficiency-Related Chronic Obstructive Pulmonary Disease
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 27
- 试验地点
- 2
- 主要终点
- Change in the meters walked during the six-minute walk test between the two groups.
研究概览
简要总结
The purpose of this research study is to determine the effect of the environment on six-minute walk test performance in individuals with chronic obstructive pulmonary disease due to alpha-1 antitrypsin deficiency. The aim of the study is to determine the environmental impact on physical performance in this population to determine if any factors influence quality of life. This study was developed to evaluate the efficacy of the using the indoor six-minute walk test to determine eligibility for ambulatory oxygen therapy.
详细描述
Participants will be asked to come to the Clinical Research Center (CRC) for a visit lasting about one hour. Participants will be asked to review and sign an informed consent document to participate in this trial. If participants agree to participate and sign the consent, the following procedures will be done. If they have not had pulmonary function testing performed in the past 18 months, standard spirometry testing will be performed. Participants will perform two six-minute walk tests, one indoors and one outdoors. First, they will be randomly assigned to perform either the indoor or outdoor testing first. Then participants will have their vital signs taken, perform the first six-minute walk study and immediately after have their vital signs taken again. Participants will have a rest period between the two six-minute walk tests of at least 30 minutes. Participants will then perform the second six-minute walk test with the same above procedures for the first test.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age above 18 years.
- •Have a diagnosis of congenital Alpha-1 Antitrypsin Deficiency with an allelic combination of ZZ.
- •Have a Forced Expiratory Volume in 1 second (FEV1)< 50% of predicted and FEV1/forced vital capacity (FVC) < 70% (Global Initiative for Chronic Obstructive Lung Disease [GOLD] stage II, III, or IV).
- •Not currently prescribed Oxygen replacement at a rate of greater than 2 liters.
- •Willing and able to perform two six-minute walk tests.
- •Willing and able to provide written informed consent.
排除标准
- •Subject has had a moderate or severe pulmonary exacerbation during the 4 weeks before the study visit.
- •History of lung transplant.
- •Severe concomitant disease (e.g., congestive heart failure, clinically significant pulmonary fibrosis, malignant disease [with the exception of skin cancers other than melanoma], history of acute hypersensitivity pneumonitis reaction, or current chronic hypersensitivity pneumonitis).
- •Unwilling or unable to perform six-minute walk testing.
- •Mentally challenged adult subjects who cannot give independent informed consent.
- •In the opinion of the investigator the subject may have compliance problems with the protocol and the procedures of the protocol.
- •American Thoracic Society listed absolute contraindications to six-minute walk test: unstable angina or myocardial infarction during previous month.
研究组 & 干预措施
six-minute walk study outdoors first
Participants randomized to outdoor six-minute walk test first
干预措施: six-minute walk study outdoors (Other)
six-minute walk study indoors second
Participants randomized to indoor six-minute walk test second
干预措施: six-minute walk study indoors (Other)
six-minute walk study indoors first
Participants randomized to indoor six-minute walk test first
干预措施: six-minute walk study indoors (Other)
six-minute walk study outdoors second
Participants randomized to outdoor six-minute walk test second
干预措施: six-minute walk study outdoors (Other)
结局指标
主要结局
Change in the meters walked during the six-minute walk test between the two groups.
时间窗: baseline
次要结局
- Change in Borg Scale for shortness of breath between the two groups(baseline)
- Change in Borg Scale for fatigue between the two groups(baseline)