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Effects of Sequential Exposure to Nitrogen Dioxide and Ozone in Healthy Adult Human Volunteers.

NCT02133586 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 54

Last updated 2020-08-17

No results posted yet for this study

Summary

The U.S. Environmental Protection Agency has traditionally examined the effects of single pollutant exposure on human health outcomes; however, to provide a better assessment of pollutant exposure-associated effect on human health the Agency is moving toward a multi-pollutant approach. Ozone (O3) and nitrogen dioxide (NO2) are national ambient air quality standards (NAAQS) criteria pollutants that are major constituents of ambient air pollution. This study will address the Agency's goals by investigating the cardiopulmonary health effects of sequential exposure to O3 and NO2 in healthy adult human volunteers. The findings of this study will provide data that will inform risk assessment models for O3 and NO2 exposures. Additionally, the findings will provide insight into how the human health effects of multi-pollutant exposures differ from those of single pollutant exposures.

Conditions

  • Respiratory Depression

Interventions

OTHER

Ozone

Exposure to 300ppb ozone with intermittent exercise as either the first exposure in a two-exposure series or as the second exposure approximately 22 hours after the first exposure (either clean air or nitrogen dioxide) in a two-exposure series.

OTHER

Nitrogen dioxide

Exposure to 500ppb nitrogen dioxide with intermittent exercise as either the first exposure in a two-exposure series or as the second exposure approximately 22 hours after the first exposure (either clean air or ozone) in a two-exposure series.

Sponsors & Collaborators

  • Environmental Protection Agency (EPA)

    lead FED

Principal Investigators

  • Shaun McCullough, M.S., Ph.D. · U.S. Environmental Protection Agency

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-01-31
Primary Completion
2016-01-31
Completion
2016-01-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02133586 on ClinicalTrials.gov