Asthma and Obesity: Observational
4. maj 2021 opdateret af: 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.
Studieoversigt
Detaljeret beskrivelse
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
Undersøgelsestype
Observationel
Tilmelding (Forventet)
333
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Colorado
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Aurora, Colorado, Forenede Stater, 80045
- University of Colorado Denver, Anschutz Medical Campus
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New York
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New York, New York, Forenede Stater, 10029
- Icahn School of Medicine at Mount Sinai
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
21 år til 64 år (Voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
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).
Beskrivelse
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.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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Obese asthmatic patients
Observational Cohort
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Forced expiratory volume (FEV1)
Tidsramme: 18 months
|
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)
Tidsramme: 18 months
|
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)
Tidsramme: 18 months
|
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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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Asthma Controller Medication Adherence
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 18 months
|
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
Tidsramme: 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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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Juan P. Wisnivesky, MD, DrPH, Icahn School of Medicine at Mount Sinai
- Ledende efterforsker: Alex D. Federman, MD, MPH, Icahn School of Medicine at Mount Sinai
- Ledende efterforsker: Fernando Holguin, MD, MPH, University of Colorado Denver, Anschutz Medical Campus
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
1. maj 2016
Primær færdiggørelse (Faktiske)
30. april 2021
Studieafslutning (Faktiske)
30. april 2021
Datoer for studieregistrering
Først indsendt
2. marts 2018
Først indsendt, der opfyldte QC-kriterier
2. marts 2018
Først opslået (Faktiske)
9. marts 2018
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
6. maj 2021
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
4. maj 2021
Sidst verificeret
1. maj 2021
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- GCO 14-1859 O
- R01HL129198 (U.S. NIH-bevilling/kontrakt)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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