One in 12 deaths could be prevented with 30 minutes of physical activity five days a week. That’s the conclusion from the world’s largest study of physical activity, which analysed data from more than 130,000 people across 17 countries.
At the start of the study, participants provided information on their socioeconomic status, lifestyle behaviours and medical history. They also answered a questionnaire about the physical activity they complete over a typical week. Participants were followed-up at least every three years to record information about cardiovascular disease and death for almost seven years.
Over the period studied, Scott Lear, from McMaster University in Canada and his colleagues found that 150 minutes of activity per week reduced the risk of death from any cause by 28 per cent and rates of heart disease by a fifth.
Being highly active was associated with even greater benefits: people who spent more than 750 minutes walking briskly each week reduced their risk of premature death by 36 per cent.
Results showed that it was not necessary to run, swim or work out at the gym. Household chores such as vacuuming or scrubbing the floor, or merely walking to work provided enough exercise to protect the heart and extend life.
“Going to the gym is great, but we only have so much time we can spend there. If we can walk to work, or at lunch time, that will help too,” says Lear.
The World Health Organisation recommend that adults aged 18 to 64 do at least 150 minutes of moderate physical activity throughout the week, as well as muscle strengthening exercises at least two days a week.
The study found that if the world’s population met these guidelines, 8 per cent of global deaths over seven years would be prevented.
“The clear-cut results reinforce the message that exercise truly is the best medicine at our disposal for reducing the odds of an early death,” says James Rudd, senior lecturer in cardiovascular medicine, at the University of Cambridge. “If a drug company came up with a medicine as effective as exercise, they would have a billion-dollar blockbuster on their hands and a Nobel prize in the post.”
Journal reference: The Lancet, DOI: 10.1016/S0140-6736(17)31634-3
relet on September 23rd, 2017 at 16:51 UTC »
When you think about it, this is not too surprising, since the study compares those who get little exercise to those who don't even get that little exercise. You'd expect life expectancy to be somewhat asymptotic to exercise - those who run marathon won't be much healthier than those who run half marathon, but those who get up from their chair five times a day will be significantly healthier than those who don't.
CryptoZappa on September 23rd, 2017 at 16:20 UTC »
Could this be why women live longer?
mvea on September 23rd, 2017 at 12:32 UTC »
Journal reference:
The effect of physical activity on mortality and cardiovascular disease in 130 000 people from 17 high-income, middle-income, and low-income countries: the PURE study
Dr Scott A Lear, PhD'Correspondence information about the author Dr Scott A LearEmail the author Dr Scott A Lear, Weihong Hu, MSc, Sumathy Rangarajan, MSc, Danijela Gasevic, PhD, Darryl Leong, PhD, Romaina Iqbal, PhD, Amparo Casanova, PhD, Sumathi Swaminathan, PhD, R M Anjana, PhD, Rajesh Kumar, MD, Annika Rosengren, MD, Li Wei, PhD, Wang Yang, MSc, Wang Chuangshi, MM, Liu Huaxing, Sanjeev Nair, MD, Rafael Diaz, MD, Hany Swidon, MD, Rajeev Gupta, MD, Noushin Mohammadifard, PhD, Patricio Lopez-Jaramillo, MD, Aytekin Oguz, MD, Katarzyna Zatonska, PhD, Pamela Seron, PhD, Alvaro Avezum, MD, Paul Poirier, MD, Koon Teo, MB, Salim Yusuf, DPhil
The Lancet, Published: 21 September 2017
DOI: http://dx.doi.org/10.1016/S0140-6736(17)31634-3
Link: http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(17)31634-3/fulltext
Abstract: