START A PETITION 25,136,189 members: the world's largest community for good
START A PETITION
x

Ozone Affects Hiker Health, Says Appalachian Mountain Club Study

Ozone Affects Hiker Health, Says Appalachian Mountain Club Study

 

This is a guest post from MCAF partner, the Appalachian Mountain Club:

If you find yourself short of breath on your next hike, it may be more than just exertion. AMC researchers and others have studied how hikers’ health is affected by ozone, a gas that is beneficial in the earth’s upper atmosphere where it occurs naturally, but is a health threat at ground level where it forms as a product of pollution.

The Environmental Protection Agency categorizes children and adults who are active in the outdoors as people who are “sensitive” to ground-level ozone because their exercise causes them to breathe in polluted air faster and more deeply than other people. In the early 1990s, the AMC contributed to a hiker-health study looking at the effects of ozone and other pollutants on the lung function of adult hikers. The findings showed that hikers’ lung function was impaired by ozone — even at concentrations considered to be “safe” by the EPA.

The Study

The study was conducted from 1990 to 1992 at the Pinkham Notch Visitor Center, located at the base of New Hampshire’s Mount Washington, by researchers from the AMC, the Harvard School of Public Health and Brigham and Women’s Hospital. Hikers between the ages of 18 and 65 volunteered to answer a questionnaire with demographic information such as age and gender, as well as information about their aerobic fitness and history of respiratory illness and smoking. Hikers were also asked to participate in three to eight measurements of lung function (as forced expiratory volume) before and after their hike.

In this “double-blind” study, hikers and researchers were both unaware of ambient air-quality conditions that were being measured concurrently. As the hiker study was going on, ozone concentration was monitored at the base and summit of Mount Washington by the AMC. In addition, other factors that affect air quality — such as fine-particulate matter — were measured near the base of the mountain, so that these effects could be accounted for as well.

The Findings

The study found a decline in hikers’ lung function related to ozone exposure during the hike, even after adjusting for hikers’ age, gender, hours hiked, weight carried, smoking and respiratory health history, and ambient temperature. For each incremental increase in ozone of 50 parts per billion, there was a 2.6 percent decline in the hikers’ measured lung function.

Participants with a history of pulmonary disease had a significantly greater ozone-associated decline in lung capacity (7.5 percent for each 50 parts per billion increase). In addition, hikers who hiked for a longer time period, thus exposing themselves to more ozone, also experienced greater lung impairment. On the other hand, a hiker’s level of work (as measured by pounds carried in a backpack or maximum pulse rate) was not a significant predictor of decrease in lung function.

Hikers should be aware that even ozone levels considered safe for the general public may affect hikers differently. Negative effects of ozone on hikers’ lungs were found at an average one-hour ozone level of 40 parts per billion, which is well below the revised EPA standard of an average 85 parts per billion over an eight-hour period.

The Significance

This study, the first to include field measurements of people representing a broad range of age and fitness levels, found greater ozone effects than in most previous field and chamber studies. These findings underscore the special concern of ozone to outdoor recreationists. As the report concluded:

Physicians, public health officials, and the general public should be aware of the potential acute impacts of relatively low-level pollutants not only among residents of urban and industrial regions but also among individuals engaged in outdoor recreation in certain wilderness areas.

Learn more about the steps you can take to protect yourself.

—–

The Appalachian Mountain Club promotes the protection, enjoyment and understanding of the mountains, forests, waters and trails of the Appalachian region. We believe these resources have intrinsic worth and also provide recreational opportunities, spiritual renewal, and ecological and economic health for the region. Because successful conservation depends on active engagement with the outdoors, we encourage people to experience, learn about, and appreciate the natural world

Please Join Moms Clean Air Force

 

Related Stories:

Riders on the Smog

No More Naked Hiking In The Alps

How New York State Residents Can Protect Themselves From Fracking Pollution

 

Read more: , , ,

Photo credit: Galyna Andrushko

have you shared this story yet?

some of the best people we know are doing it

37 comments

+ add your own
6:32PM PST on Feb 24, 2012

Sounds logical!

9:03PM PST on Feb 22, 2012

Oh dear. Important, but sad, to know.

10:53AM PST on Feb 12, 2012

thanks

12:42PM PST on Feb 10, 2012

Thank you for the article but I'm not surprised at all.

2:41PM PST on Feb 9, 2012

Thanks for sharing.

8:16AM PST on Feb 9, 2012

Thanks

2:23AM PST on Feb 9, 2012

Thanks for sharing.

12:06AM PST on Feb 9, 2012

I am getting dispirited... we cannot even exercise in nature anymore without getting polluted?

4:02PM PST on Feb 8, 2012

Man has destroyed the o-zone layer, so it is going to destroy us.

2:25PM PST on Feb 8, 2012

Man has destroyed the o-zone layer, so it is going to destroy us.

add your comment



Disclaimer: The views expressed above are solely those of the author and may not reflect those of
Care2, Inc., its employees or advertisers.

Care2 - Be Extraordinary - Start a Care2 Petition
ads keep care2 free
CONTACT THE EDITORS

Recent Comments from Causes

Call Bill Clinton!!! She did her research; the town is in the wrong.

The problem is politics period because it serves big business. This is where things went wrong. Instead…

@ David F: Uh…. No. You didn’t read that right. A review by the Harvard School of Public…

meet our writers

Julie M. Rodriguez Julie M. Rodriguez is an arts, green living, and political writer based in San Mateo, CA. Her work... more
ads keep care2 free



Select names from your address book   |   Help
   

We hate spam. We do not sell or share the email addresses you provide.