- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01708356
Cycling, Air Pollution and Health (CAPaH)
Introduction: Cycling is currently promoted at the municipal, provincial and national level as a form of active transportation that increases physical activity while at the same time reducing traffic congestion, traffic-related air pollution and greenhouse gas emissions. While at a population level the health benefits of exercise via cycling are estimated to substantially exceed any health impacts related to air pollution exposure and injuries from traffic accidents , cyclists are known to experience elevated exposures to traffic-related air pollutants. Combined with exposure to elevated concentrations of air pollutants, cyclists also are subject to substantially increased inhaled doses due to their level of exertion and consequently increased inhalation rate. Therefore, given that cyclists experience exposures to relatively high concentrations of traffic-related air pollutants and that their inhalation of these pollutants is increased, it is important to evaluate the potential health impacts of this scenario. Research on the potential health impacts related to exercise (cycling) and urban air pollution exposure can help inform public communication strategies related to air quality and its health impacts. In addition, as our previous work suggests substantial variability in air pollution exposures to cyclists that is related to the route type and the levels of traffic along cycling routes, there is potential for transportation planners to promote increased cycling by enhancing infrastructure while at the same time developing routes that also minimize exposure to air pollution. The cyclist population is also interested in information regarding the air pollution exposures and potential health impacts related to cycling.
The objective of this study is to investigate the relationship between traffic-related air pollution exposure, and respiratory and cardiovascular health impacts in commuting cyclists. Specifically, the investigators propose to:
- determine commuting cyclists' exposure to traffic-related air pollutants (PM 2.5, PM10, ultrafine particulate, black carbon) while cycling along two different bicycle routes in the city of Vancouver;
- estimate the pollutant dose received by each cyclist, and relate this to the health effects observed; and
- determine if there is a change in lung function, endothelial function, and C-reactive protein level related to the level of air pollution exposure and dose
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
British Columbia
-
Vancouver, British Columbia, Canada, V6T 1Z3
- Air Pollution Exposure Lab, Vancouver General Hospital through the School of Population and Public Health, University of British Columbia
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age 19- 39
- male or female
- able to bicycle comfortably on city streets for 1 hour
Exclusion Criteria:
- Smokers of any substance (smoking more than 1x every 2 weeks)
- Must be of height to safely ride a test bike (<5'2", >6'5" )
- Diagnosed asthma or active allergy (hav fever) symptoms
- Irregular menstrual cycle, pregnant, breastfeeding, non-monocyclic contraceptive medication or device
- Taking medication for heart or lung condition
- Answers yes to any questions on physical activity readiness questionnaire (PAR-Q)
- requires pain medication daily
- visual or hearing impairment that prevents safe cycling on streets with motor vehicles
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Normal cycling
Cycling on a residential and downtown route (crossover design)
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in endothelial function, as measured by peripheral arterial tonometry (EndoPAT) score of reactive hyperemia index (RHI)
Time Frame: Baseline (1 hour pre-expousre) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Baseline (1 hour pre-expousre) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in lung function (using spirometry to assess lung function values)
Time Frame: Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Other Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in blood levels of C-reactive protein (a marker of systemic inflammation)
Time Frame: Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Change in blood levels of Interleukin-6 (a marker of systemic inflammation)
Time Frame: Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Change in blood levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG)(a marker of oxidative stress)
Time Frame: Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Baseline (1 hour pre-exposure) and 1 hour post- exposure (plus or minus 30 minutes) to a bicycle ride in an urban environment outdoors
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Michael Brauer, ScD, The University of British Columbia
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- H10-00902
- H1008-111481/001/XSB (Other Identifier: UBC CREB)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Endothelial Dysfunction
-
M.D. Anderson Cancer CenterRecruitingEndothelial Dysfunction | Vascular | Endothelial | EndothelixUnited States
-
Clinica ARS MedicaUnknown
-
University of California, San DiegoCompletedEndothelial Dysfunction
-
M.D. Anderson Cancer CenterCompletedEndothelial DysfunctionUnited States
-
NestléCompleted
-
Société des Produits Nestlé (SPN)Completed
-
General Hospital of Chinese Armed Police ForcesChinese PLA General HospitalUnknown
-
University of ConnecticutCompletedEndothelial DysfunctionUnited States
-
Florida State UniversityRecruitingEndothelial DysfunctionUnited States
-
Poznan University of Physical EducationCompletedEndothelial DysfunctionPoland
Clinical Trials on Cycling on a residential route
-
University Hospital, Clermont-FerrandUniversité d'Auvergne; LaPEC laboratory (EA 4278), University of Avignon, Avignon... and other collaboratorsUnknown
-
Joslin Diabetes CenterCompletedHypoglycemia | Physical Activity | Roux-en-Y Gastric Bypass | Post-bariatric HypoglycemiaUnited States
-
Kent State UniversityDeskCycleCompletedChronic Disease | Reduction, WeightUnited States
-
University of SydneyCompleted
-
Hospices Civils de LyonRecruitingCovid19 | Respiratory Distress Syndrome | Ventilators, MechanicalFrance
-
Massachusetts General HospitalThe Cleveland ClinicCompletedParkinson DiseaseUnited States
-
Eyup Hakan DuranRecruiting
-
Southeast University, ChinaCompletedAutomatic Adjustmen of Inspiratory Triger and Cycling-offChina
-
Centre Hospitalier Universitaire de Saint EtienneCompletedUltra-marathon RunnersFrance