HOME >> BIOLOGY >> NEWS
Even Moderate Air Pollution Reaching Eastern Wilderness Decreases Mountain Hikers' Lung Function

Even in a mountain wilderness, periods of moderate levels of ozone -- the main ingredient of urban smog -- can decrease active people's lung function, a study led by researchers at Brigham and Women's Hospital and the Harvard School of Public Health has found.

The researchers said their two-year study showed ozone levels common to non-urban parts of the United States were associated with decreases in lung function in adult hikers on Mt. Washington in the White Mountain National Forest in New Hampshire. These declines were more pronounced in hikers with a history of asthma or wheezing.

Their study results are published today in the February issue of Environmental Health Perspectives, the monthly journal of the National Institute of Environmental Health Sciences.

The study evaluated the effects of ozone and other air pollutants, including fine particulate matter and suspended acid droplets, on the lung function of 530 nonsmokers hiking on New Hampshire's Mount Washington during two summers. When ozone went up slightly, lung function decreased, the researchers said.

The hikers ranged from 18 to 64 years of age and hiked an average of eight hours each. During this time, they were exposed to average ozone concentrations from 21 to 74 parts per billion (ppb) per hour. The overall average exposure was 40 ppb, which the researchers called "a relatively low level characteristic of much of the continental United States."

Researchers measured the hikers' forced expiratory volume -- the volume of air they could expel from their lungs in one second -- and forced vital capacity -- the total volume of air expelled from the lungs - before and after their hikes. They found that a 50 ppb increase in ozone concentration was associated with decreased lung function over the course of the hike - an average 2.6 percent decline in forced expiratory volume, and a 2.
'"/>

Contact: John Peterson
Peterso4@niehs.nih.gov
919 541-7860
NIH/National Institute of Environmental Health Sciences
22-Jan-1998


Page: 1 2

Related biology news :

1. Moderate alcohol consumption increases plasma levels of a protective hormone
2. Moderate iron deficiency affects cognitive performance - but iron supplementation improves it
3. Moderate alcohol consumption after meals can decrease levels of insulin
4. Moderate alcohol consumption during pregnancy is risky too
5. Moderate vitamin E supplementation may lower diabetics cardiovascular risk
6. Moderate alcohol consumption increases bone mineral density in elderly women
7. Moderate alcohol consumption may reduce your chances of a heart attack
8. Moderate caffeine use does not increase miscarriage risk but high caffeine use doubles risk
9. Duke Researchers Finds That Moderate Caffeine Use Boosts Blood Pressure, Potential For Heart Disease
10. No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
11. Pollution history documented through shell remains provides tool to study ecosystem change

Post Your Comments:
(Date:11/7/2014)...  In conjunction with the Glendale ... Foundation of the Verdugos has announced the " GLENDALE ... $250,000 initiative to keep the Verdugo Regional Crime Lab operational ... months of existence, the Lab has processed more than 400 ... enforcement. "Because our number one priority is the ...
(Date:11/6/2014)... occur because of metastasis, yet progress in preventing ... , "It,s been particularly challenging to design drugs ... fellow in systems biology at Harvard Medical School. ... after they,ve already metastasized." , Gujral and colleagues ... help researchers better understand how metastasis begins. Their ...
(Date:11/5/2014)... of biology in the UTSA College of Sciences, ... selected to receive a two-year $300,00 National Science ... (EAGER). The funding supports President Obama,s BRAIN Initiative, ... new technology that will demystify complex brain processes. ... neuroscience are broken into the interactions of multiple ...
Breaking Biology News(10 mins):Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2Migration negation 2Migration negation 3UTSA biology professor awarded $300,000 NSF grant for brain research 2UTSA biology professor awarded $300,000 NSF grant for brain research 3
(Date:11/22/2014)... 21, 2014 During his lifetime Richard ... need to surround himself with great people and take ... his friends often marveled at his extraordinarily courageous attitude ... life and -- even with his death impending—that’s how ... disease that would ultimately take his life. , Carrying ...
(Date:11/22/2014)... Denver, Colo. (PRWEB) November 21, 2014 ... of proprietary cloud based analytics and scientific testing methodologies ... a commitment for a $750,000 line of credit from ... are extremely pleased to have secured this commitment from ... Chief Executive Officer of CannLabs. “This capital will help ...
(Date:11/22/2014)... On November 17th Chicago start-up Briteseed outperformed 137 ... Summit in San Francisco to take first place in ... Valley investors and technology elites as the premier showcase ... Briteseed to move on to the final phase ... with other elite innovation finalists for a $125,000 cash ...
(Date:11/22/2014)... Grand Rapids, MI (PRWEB) November 22, 2014 ... the opportunity to simulate the proper management of ... training and test lung devices . Grand Rapids-based, ... Lung” plans to donate two of the respiratory ... $12,000 to $15,000 each. Grand Valley and Muskegon ...
Breaking Biology Technology:Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 3CannLabs Secures $750,000 Line Of Credit 2Insight Product Development Accelerator Member Wins MedTech Innovator Award Competition 2Insight Product Development Accelerator Member Wins MedTech Innovator Award Competition 3Michigan Instruments Donates Two Respiratory Simulation Training and Test Lung (TTL) Devices to Grand Valley State University 2Michigan Instruments Donates Two Respiratory Simulation Training and Test Lung (TTL) Devices to Grand Valley State University 3
Cached News: