Hard Ride: Traffic-Related Pollution May Alter Heart Function in Urban Cyclists

By Barrett, Julia R. | Environmental Health Perspectives, October 2011 | Go to article overview

Hard Ride: Traffic-Related Pollution May Alter Heart Function in Urban Cyclists


Barrett, Julia R., Environmental Health Perspectives


People who ride bicycles along roadways may incur considerable exposure to traffic-related air pollutants that have been associated with adverse respiratory and cardiovascular effects in epidemiologic studies. A new study examined changes in heart rate variability (HRV) and respiratory factors in cyclists exposed to traffic-related air pollutants and found that ultrafine particles as well as ozone and nitrogen dioxide ([NO.sub.2]) altered autonomic regulation of the heart [EHP 119(10):1373-1378; Weichenthal et al.].

Forty-two healthy individuals (28 men and 14 women aged 19-58 years) participated in the study, which involved cycling for 1 hour indoors or along high-traffic or low-traffic routes in Ottawa, Ontario. Thirty-eight participants completed all three routes. Continuously recorded electrocardiograms provided cardiac data, and respiratory function was measured by spirometry. Cyclists were equipped with pannier-mounted instruments to collect real-time information on fine particles, ultrafine particles, and black carbon, while technicians on bicycles equipped with volatile organic compound monitors traveled with the participants. Data for ambient ozone, [NO.sub.2], and sulfur dioxide came from a fixed monitoring station in downtown Ottawa.

In the 3 hours after cycling, short-term exposure to traffic-related air pollution was associated with altered autonomic regulation of the heart, specifically parasympathetic modulation. …

The rest of this article is only available to active members of Questia

Already a member? Log in now.

Notes for this article

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items
Notes
Cite this article

Cited article

Style
Citations are available only to our active members.
Buy instant access to cite pages or passages in MLA 8, MLA 7, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

(Einhorn 25)

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Note: primary sources have slightly different requirements for citation. Please see these guidelines for more information.

Cited article

Hard Ride: Traffic-Related Pollution May Alter Heart Function in Urban Cyclists
Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this article

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Help
Full screen
Items saved from this article
  • Highlights & Notes
  • Citations
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

matching results for page

    Questia reader help

    How to highlight and cite specific passages

    1. Click or tap the first word you want to select.
    2. Click or tap the last word you want to select, and you’ll see everything in between get selected.
    3. You’ll then get a menu of options like creating a highlight or a citation from that passage of text.

    OK, got it!

    Cited passage

    Style
    Citations are available only to our active members.
    Buy instant access to cite pages or passages in MLA 8, MLA 7, APA and Chicago citation styles.

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

    1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

    Cited passage

    Thanks for trying Questia!

    Please continue trying out our research tools, but please note, full functionality is available only to our active members.

    Your work will be lost once you leave this Web page.

    Buy instant access to save your work.

    Already a member? Log in now.

    Search by... Author
    Show... All Results Primary Sources Peer-reviewed

    Oops!

    An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.