Research

Air pollution may cancel health benefits of exercise

Air pollution may cancel health benefits of exercise

'For people living in the inner city it may be hard to find areas where they can walk, away from pollution ... we really need to reduce pollution by controlling traffic'.

Mother's home address at time of birth was recorded and average monthly concentrations of traffic related pollutants - nitrogen dioxide (NO2), nitrogen oxides (NOx), and fine particulate matter (PM2.5) from traffic exhaust and non-exhaust sources, such as brakes or tyre wear - as well as larger particulate matter (PM10) were estimated.

Fumes from vehicles in London is linked with a rise of up to six per cent in the odds of a low birth weight and a rise of up to three per cent in the risk of being small for the baby's gestational age, Imperial College London found.

But the researchers, from Imperial College London and Duke University in the U.S., also discovered that air pollution is very localised - so leaving a busy street and exercising in a park instead was enough to reverse the trend.

In the study, researchers recruited 119 volunteers through the Royal Brompton Hospital in London, who were over the age of 60 and were either healthy, had stable Chronic Obstructive Pulmonary Disease (COPD), or had stable heart disease. Half walked on Oxford Street and the other half through a quiet section of nearby Hyde Park.

The study, in the Lancet medical journal, warned breathing in pollution from diesel cars is particularly risky.

"The research does convince me, though, that poor air quality does play an important role in the short-term benefit one can get from taking a walk".

More news: Katrina and Alia are the new BFFs in town. Here's proof

Air pollution levels were monitored before and during their walk, and each participant's lung capacity and arterial stiffness was measured before and after.

"This adds to the growing body of evidence showing the negative cardiovascular and respiratory impacts of even a short, two-hour exposure to motor traffic pollution", said Junfeng Zhang, professor at Duke University in the US. Data analysis was carried out at the MRC-PHE Centre for Environment and Health at Imperial College London and Kings College London, and the Rutgers School of Public Health in New Jersey.

The study showed that all the volunteers benefited from a stroll in the park, with lung capacity improving within the first hour, arteries becoming significantly less stiff, and blood flow increasing and lowering in pressure. On the other hand, those walking along Oxford Street saw little to no health benefits.

'When exercising it's best to avoid highly-polluted areas, swapping them for green spaces or even back streets where pollution is lower.

The British Heart Foundation says the cardiovascular benefits of a brisk walk along Oxford Street are completely negated by exposure to air pollution for the over 60s.

This effect was reduced when walking along Oxford Street, the researchers added, with a maximum change in arterial stiffness of 4.6% for healthy volunteers, 16% for those with COPD and 8.6% for heart disease patients.


  • Wind Advisory in effect until 7 pm for southeast MI

    Wind Advisory in effect until 7 pm for southeast MI

    A partly cloudy sky on Tuesday will still be accompanied by a brisk west wind and temperatures making it into the middle 40s. At Auto Club Speedway, Magic of Lights, a holiday lights experience, was cancelled on both December 4 and 5 due to the winds.
    Featured Snippets, Knowledge Panels in Google Search updated w/ more images, suggestions

    Featured Snippets, Knowledge Panels in Google Search updated w/ more images, suggestions

    Previously, Search only offered suggestions related to the most recent query, and not to a user's search history. Searching for something often leads to the discovery of new knowledge and Google is aware of that all too well.
    Spell out stand on Ayodhya, Amit Shah asks Congress

    Spell out stand on Ayodhya, Amit Shah asks Congress

    The Congress Party then furthered the war of words and said the BJP was raking up non-issues just to garner votes. Why did no one from the BJP object to it at that time? Congress has got nothing to do with his case.
  • Usual suspect was Spacey for misbehaviour, claims Byrne

    Reuters/Mario AnzuoniNetflix fired Kevin Spacey from " House of Cards " after sexual harassment allegations came to light. The downward spiral of Spacey started when Anthony Rapp accused him of sexual assault when he was 14-years-old.
    WH lawyer told Trump that Flynn misled Federal Bureau of Investigation  and Pence

    WH lawyer told Trump that Flynn misled Federal Bureau of Investigation and Pence

    Former FBI director James Comey also fired back at Trump after he accused Comey of lying . Wray did not mention Trump in the message. "That goes with this job and always has".
    Katrina Kaif dedicates heartfelt message to late legendary actor Shashi Kapoor

    Katrina Kaif dedicates heartfelt message to late legendary actor Shashi Kapoor

    While the entire nation mourns the loss, the Kapoor family is also dealing with the loss of their close family member. He won numerous acting prizes and in 2011 was honored with the Padma Bhushan, one of India's highest civilian awards.
  • Lionsgate Cuts John Travolta's Gotti Biopic Just 10 Days Before Release

    Lionsgate Cuts John Travolta's Gotti Biopic Just 10 Days Before Release

    The " Gotti " movie again sleeps with the fishes. "That's a different angle that we're going to explore". Gotti managed to avoid jail time throughout the 1980s but was sent to jail for life in 1992.

    As Nike INC (NKE) Shares Declined, Sustainable Growth Advisers LP Lifted Stake

    Following the transaction, the director now owns 25,660 shares of the company's stock, valued at approximately $1,371,527. Stifel Nicolaus maintained NIKE, Inc. (NYSE:NKE) earned "Outperform" rating by Credit Suisse on Friday, September 25.
    Angels sign Maitan, the top prospect Braves lost due to major infractions

    Angels sign Maitan, the top prospect Braves lost due to major infractions

    They still have $1.315 million to offer Ohtani, though the Japanese superstar does not appear to be concerned with money. Back on November 21, Major League Baseball came down hard on the Braves for violations in the global free agent market.
  • Recount Sought In Atlanta Mayoral Race

    Recount Sought In Atlanta Mayoral Race

    Earlier on Tuesday, both Norwood and Bottoms, as well as Mayor Kasim Reed, cast their ballots in the race. As we stand tonight, united and one Atlanta". "That's a huge issue that we have to address".
    YouTube adding more human moderators to combat abuse of the platform

    YouTube adding more human moderators to combat abuse of the platform

    YouTube said Monday that it is also taking steps to try to reassure advertisers that their ads won't run next to gross videos. Wojcicki said 180,000 people would have had to work 40 weeks to assess the same amount of content.
    RBI Keeps Interest Rate Unchanged, Raises Inflation Forecast

    RBI Keeps Interest Rate Unchanged, Raises Inflation Forecast

    The change, or lack of it, in the lending rates has now been a bone of contention between the government and RBI for a while. RBI kept the repo rate unchanged at 6 per cent, reverse repo rate at 5.75 per cent and bank rate at 6.25 per cent.