Air pollution cuts benefits of exercise in elderly

Share
Air pollution cuts benefits of exercise in elderly

So a team of London-based researchers led by Imperial College London set out to investigate the relation between exposure to both air and noise pollution from road traffic during pregnancy and two birth weight outcomes - low birth weight (less than 2500 g) and being born small for gestational age.

Previous BHF research has shown that breathing in high amounts of polluted air is linked to an increased risk of heart attack and stroke.

But after walking on Oxford Street there were only minor improvements in lung capacity, while the measures of arterial stiffness actually got worse which the study associated with "greater exposure to black carbon soot and ultrafine particles from diesel exhaust".

"Exercise is crucial in reducing the risk of a heart attack or stroke, but it seems risky levels of air pollution could be erasing these benefits in older adults", said Simon Gillespie, chief executive at the BHF.

Air pollution from road traffic is having a detrimental impact upon babies' health in London, before they are born, finds a study published by The BMJ today. Researchers said the findings apply to other cities across the United Kingdom and Europe and are calling for policies to improve air quality in urban areas.

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.

Commenting on the results, Fan Chung, Professor of Respiratory Medicine and Head of Experimental Studies Medicine at the National Heart & Lung Institute at Imperial College London and senior author of the study, said: "These findings are important as for many people, such as the elderly or those with chronic disease, very often the only exercise they can do is to walk".

Blood flow also increased after exercise, with decreases in blood pressure and an increase in heart rate. Healthy volunteers experienced a maximum reduction in arterial stiffness of just 4.6 per cent; COPD patients saw a 16 per cent reduction; and those with heart disease saw an 8.6 per cent reduction. "Our research suggests that we might advise older adults to walk in green spaces, away from built-up areas and pollution from traffic", he added.

Exercising on polluted city streets does more harm than good, research suggests. It is worth noting that stress could account for some of the physiological differences seen between the two settings.

"Combined with evidence from other recent studies, our findings underscore that we can not really tolerate the levels of air pollution that we now find on our busy streets", said Fan Chung, professor at Imperial College in the UK.

"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. "That should allow everyone to be able to enjoy the health benefits of physical activity in any urban environment".

Share

Advertisement

Related Posts

Burnley reveal Robbie Brady will undergo knee surgery after injury shocker
Brady, Ireland's Player of the Year in 2016, is the sixth Burnley player to suffer a serious knee injury in four-and-a-half years. Brady - who had been in fine form for the Clarets - looks set to miss the rest of the Premier League season.

Legal & General sells 1.1 million life policies to Swiss Re
The logo of the world's second biggest reinsurer Swiss Re is seen in front of the company's headquarters in Zurich July 8, 2013. Swiss Re also bought United Kingdom insurer Guardian Financial Services for £1.6bn in 2015.

Zinke recommends shrinking Nevada monument
Zinke said, "The argument that somehow President Trump stole land is nefarious, false and a lie". Final action will be left up to the president.

'Congress needlessly linking Ram Temple with polls, not bothered about nation'
Is such thinking proper", the Prime Minister asked while addressing a rally in Gujarat's Dhandhuka. About 2,000 people were killed in the deadly riots that followed the Babri masjid demolition.

British Columbia Investment Management Corp Holds Position in Priceline Grp INC (PCLN)
With 500 avg volume, 2440 days are for SEGA SAMMY HOLDINGS ORD (OTCMKTS:SGAMF)'s short sellers to cover SGAMF's short positions. The institutional investor purchased 139 shares of the business services provider's stock, valued at approximately $254,000.

Mayor, city council president to be chosen in Atlanta
In Senate District 39, voters are deciding between Atlanta Democrats Nikema Williams and Linda Pritchett. Norwood calls herself an independent and Bottoms is the chosen successor of outgoing Mayor Kasim Reed.

Google updates its Search app to help you discover new information faster
If you're searching for info about skiing, you'll see related searches for sports such as snowboarding directly inside the result. The similar Knowledge Panels will also show related content now.

Markus Jooste quits as Steinhoff CEO
The Steinhoff holding company is based in Amsterdam for tax reasons and has its primary listing on the Frankfurt stock exchange. Steinhoff's supervisory board has appointed its chairman, Christo Wiese, as executive chairman on an interim basis.

United Kingdom government has no sector-by-sector studies on Brexit impact
But MPs pointed to a number of statements Davis had made over previous months that appear to contradict this claim. Lib Dem committee member Wera Hobhouse accused Davis of "misleading Parliament" over the studies.

Disney Reportedly Close To Buying X-Men Film Studio 20th Century Fox
However, no deal between Disney and Fox is imminent and several issues have yet to be fully negotiated, the sources said. In what could be a major shift in film and TV, Disney is reportedly in talks to buy most of 21st Century Fox .

© 2015 ExpressNewsline. All Rights reserved.