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AIM to Improve Asthma: Airflow Improvements During Meal-Prep

Not Applicable
Completed
Conditions
Pollution; Exposure
Asthma in Children
Interventions
Behavioral: Cooking Ventilation Intervention
Registration Number
NCT04464720
Lead Sponsor
University of California, Berkeley
Brief Summary

The investigators propose a pilot trial of kitchen ventilation in the homes of children using a youth engaged research strategy.

Detailed Description

In this trial of children ages 6-12, children and their households will receive an intensive home kitchen ventilation intervention after one week of baseline data collection. The intervention includes education regarding improving ventilation in their homes during cooking and replacement of their range hood if it has inadequate flow or an intolerable noise level. During baseline data collection periods the households will be encouraged to continue their regular cooking patterns. The investigators will measure home particulate matter \<2.5 microns (PM2.5) and nitrogen dioxide (NO2) levels for one week at baseline, and a final week after all remaining families receive the cooking ventilation intervention, to assess for changes within each household. The investigators will also examine changes in airways inflammation (as measured by the exhaled fraction of nitric oxide, FeNO), lung function (as measured by spirometry), and reported symptoms after the baseline and intervention period. Members of the research team have successfully conducted youth participatory action research in the low-income, high asthma prevalence community of Richmond, California (CA) as well as extensive youth participatory action research on other environmental health concerns in the low income city of Salinas, CA; using a similar model, the investigators aim to teach research methods to a new group of Richmond youth.

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
19
Inclusion Criteria
  • Household has a gas stove
  • Household has a range hood that vents to the outdoors
  • Household in Richmond or San Pablo
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Exclusion Criteria
  • Child has other significant medical illnesses (e.g. prematurity, diabetes)
  • living with a smoker who smokes indoors
  • family knows they will not have stable housing for the period of the study
  • Parent is not fluent in English.
Read More

Study & Design

Study Type
INTERVENTIONAL
Study Design
SINGLE_GROUP
Arm && Interventions
GroupInterventionDescription
Intervention after One WeekCooking Ventilation InterventionThis arm will have baseline data on air pollutant levels, stove use and range hood use collected for one week prior to receiving an educational intervention aimed at increasing use of the range hood. Data following the intervention will be collected for an additional week.
Primary Outcome Measures
NameTimeMethod
Continuously-Measured Home PM2.5 (Fine Particulate Matter) Levels Prior to Intervention1-2 weeks

Home PM2.5 levels were measured in real-time with eLichens sensors.

Continuously-Measured Home PM2.5 (Fine Particulate Matter) Levels Following Intervention1-2 weeks

Home PM2.5 levels were measured in real-time using the eLichens sensors

Continuously-Measured Home NO2 (Nitrogen Dioxide) Levels Prior to Intervention1-2 weeks

Home NO2 levels were measured in real-time using eLichens sensors

Continuously-Measured Home NO2 (Nitrogen Dioxide) Level Following Intervention1-2 weeks

Home NO2 levels were measured with eLichens sensors

Secondary Outcome Measures
NameTimeMethod
Spirometry- Forced Vital Capacity (FVC)measured at the end of the pre-intervention interval

Spirometry is a non-invasive measure of lung function. Spirometry will be performed using an Easy One Air Spirometer; staff will be trained thoroughly in administration of the test. Forced Vital Capacity measures the total volume of air that a person can breathe out forcefully from a full breath, blowing all of it out.

Z-Scores were created using global lung initiative normative data. A Z-score of 0 represents the population mean for a participant of that age, sex and height. A decrease in Z scores suggests worsened lung function over time.

Spirometry- Forced Expiratory Volume in One Second (FEV1)measured at the end of the post-intervention interval

Spirometry is a non-invasive measure of lung function. Spirometry was performed using an Easy One Air Spirometer. Forced expiratory volume in one second measures the volume of air that a person breathes out forcefully in the first second of blowing out a full breath.

Z-Scores were created using global lung initiative normative data. A Z-score of 0 represents the population mean for a participant of that age, sex and height. A decrease in Z scores suggests worsened lung function over time.

Spirometry-Forced Vital Capacity (FVC)measured at the end of the post-intervention interval

Spirometry is a non-invasive measure of lung function. Spirometry was be performed using an Easy One Air Spirometer. Forced Vital Capacity measures the total volume of air that a person can breathe out forcefully from a full breath, blowing all of it out.

Z-Scores were created using global lung initiative normative data. A Z-score of 0 represents the population mean for a participant of that age, sex and height. A decrease in Z scores suggests worsened lung function over time.

Fractional Exhaled Nitric Oxide (FeNO)measured at the end of the post-intervention interval

FeNO is a non-invasive measure of airways inflammation. FeNO will be performed using a NIOX Vero device.

Asthma Controlmeasured at the end of the post-intervention interval

Asthma control was assessed using the widely-accepted, validated Childhood Asthma Control Test (cACT) for children with asthma.

The cACT scale ranges from 0 to 27. Values up to 15 represent very poorly controlled asthma, 16-20 represents poorly controlled asthma and 21 or greater is considered well-controlled asthma.

Trial Locations

Locations (1)

University of California Berkeley

🇺🇸

Berkeley, California, United States

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