Asthma and Obesity: Observational
2021年5月4日 更新者：Juan P Wisnivesky、Icahn School of Medicine at Mount Sinai
Obesity and Asthma: Unveiling Metabolic and Behavioral Pathways
Obesity is associated with poor asthma control and greater healthcare utilization and costs.
In this study the researchers will examine the biologic and behavioral interrelationships between these conditions and their impact on outcomes.
Towards this end, the researchers will conduct an observational prospective cohort study of 400 obese asthmatic patients treated at institutions in New York City and Denver, and develop and pilot test educational and counseling modules that take an integrated approach to asthma and obesity self-management support.
研究概览
详细说明
The objective of this study is to examine novel biological and behavioral pathways that may explain the association of obesity with asthma morbidity, and develop and pilot test educational and counseling modules, based on self-regulation theory, that take an integrated approach to asthma and obesity self-management support.
The Specific Aims are to:
- Compare the longitudinal relationship between L-arginine/ADMA balance and morbidity (lung function, asthma control, acute resource utilization, and quality of life) between obese adults with late onset asthma vs. (a) obese adults with early onset asthma and non-obese asthmatics with early (b) or late (c) onset disease. Age of asthma onset is as categorized as early when developed ≤12 years of age or late when developed >12 years of age.
- Evaluate the interrelationship between obesity- and asthma-related illness beliefs, and the impact of cognitive function, on patients' management of these conditions over time
研究类型
观察性的
注册 (预期的)
333
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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Colorado
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Aurora、Colorado、美国、80045
- University of Colorado Denver, Anschutz Medical Campus
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New York
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New York、New York、美国、10029
- Icahn School of Medicine at Mount Sinai
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参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
21年 至 64年 (成人)
接受健康志愿者
不
有资格学习的性别
全部
取样方法
非概率样本
研究人群
A description of the population from which the groups or cohorts will be selected (for example, primary care clinic, community sample, residents of a certain town).
描述
Inclusion Criteria:
- >21 years with a diagnosis of asthma made by a health care provider and evidence of airway reactivity (increase in FEV1 >12% and >200 ml after bronchodilators or positive methacholine test) in prior lung function testing or baseline spirometry;
- prescribed an asthma controller medication;
- English or Spanish speaking.
Exclusion Criteria:
- chronic obstructive lung disease (COPD) or other chronic respiratory illness; - >15 pack-year smoking history because of the possibility of undiagnosed COPD;
- diagnosis of dementia identified in the clinical record.
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
|---|
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Obese asthmatic patients
Observational Cohort
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Forced expiratory volume (FEV1)
大体时间：18 months
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Forced expiratory volume (FEV1) measures how much air a person can exhale during the first second of a forced breath, performed by spirometry.
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18 months
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Exhaled Nitric Oxide (eNO)
大体时间：18 months
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eNO is the most widely used and standardized noninvasive biomarker that evaluates airway inflammation in asthma.
measured before spirometry using the NIOX MINO system (Aerocrine AB, Stockholm, Sweden) following established procedures.
Current guidelines do not yet specify ''normal'' values; however, eNO levels >20-25ppb have been used as cut-points indicating airway inflammation and the need to change treatment.
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18 months
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Asthma Control Questionnaire (ACQ)
大体时间：18 months
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The ACQ has 7 items: 5 items-self administered for symptoms, 1 item self administered rescue inbronchodilator use, and 1 item FEV1% completed by provider.
7-point scale from 0 = no impairment to 6 = maximum impairment.
The questions are equally weighted and the ACQ score is the mean of the 7 questions, with total score range between 0 (totally controlled) and 6 (severely uncontrolled).
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18 months
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Asthma Controller Medication Adherence
大体时间：4 weeks
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objectively measure ICS adherence using the Smartinhaler (Nexus6, Franklin, OH) or Doser electronic devices (Meditrack, MA) for metered dose inhalers (MDIs) and the Smartdisk (Nexus6, Franklin, OH) for dry powder inhalers (DPIs) for 4 weeks after each in-person interview.
Adherence will be defined as use of medications on ≥80% of days prescribed, a commonly applied convention.
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4 weeks
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The Medication Adherence Rating Scale (MARS)
大体时间：18 months
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A 10-item self-reported questionnaire resulting from the combination of the Medication Adherence Questionnaire and the Drug Attitude Inventory.
The MARS contains 10 yes/no item and the sum of items yields a final score ranking from 0 (poor adherence to treatment) to 10 (good adherence to treatment).
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18 months
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Food Behavior Checklist
大体时间：18 months
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16 question survey.
Each question represents a certain value (1 - 4) that when added collectively predicts the quality of person's food consumption habits.
The higher the score, the more optimal the habits.
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18 months
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Physical activity level
大体时间：18 months
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Physical activity: levels will be assessed using an ActiGraph wGT3X-BL triaxial accelerometer (ActiGraph LLC; Pensacola, FL) worn on the waist for 7 days after each in person visit.
The ActiGraph has been validated for physical activity and sedentary time in laboratory and field settings.
Data from the monitor will be output as activity counts then converted to step counts and time spent in different intensities of activity using previously determined cut-points.
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18 months
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员：Juan P. Wisnivesky, MD, DrPH、Icahn School of Medicine at Mount Sinai
- 首席研究员：Alex D. Federman, MD, MPH、Icahn School of Medicine at Mount Sinai
- 首席研究员：Fernando Holguin, MD, MPH、University of Colorado Denver, Anschutz Medical Campus
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2016年5月1日
初级完成 (实际的)
2021年4月30日
研究完成 (实际的)
2021年4月30日
研究注册日期
首次提交
2018年3月2日
首先提交符合 QC 标准的
2018年3月2日
首次发布 (实际的)
2018年3月9日
研究记录更新
最后更新发布 (实际的)
2021年5月6日
上次提交的符合 QC 标准的更新
2021年5月4日
最后验证
2021年5月1日
更多信息
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