“If it was a pill, exercise would be a trillion-dollar money-maker prescribed to everyone.” Dr. Scott Lear, heart disease prevention researcher at Simon Fraser University, British Columbia, Canada.
A prescription for exercise?
Exercise is so effective at preventing and treating some chronic diseases, doctors are being encouraged to write prescriptions for it… Exercise decreases the risk of many diseases, including heart disease, stroke, Type 2 diabetes, depression (as discussed in last week’s blog ), and many cancers. Here are a few statistics for lowering chronic disease risk, as quoted on the website, Moving Medicine (a beta site being developed to encourage doctors to “prescribe” exercise to their patients):
Type 2 diabetes -40%
Cardiovascular disease -35%
Falls -30%
Dementia -30%
Depression -30%
Joint and back pain -20%
Physical activity is as important for health as many medications, but without the side effects. Humans were made to move, and inactivity is believed to be as harmful to our health as cigarettes. But, the more affluent our society becomes, the less we tend to move.
Who needs this prescription?
A global study of activity found that, on average, more than one-quarter of adults worldwide are not getting enough physical activity. And high-income Western countries (like us in North America) have inactivity rates twice as high as those of poorer countries, over 50% in some areas.
And women tend to be less active than men – up to 20% less in some countries. A 2017 survey published in Health Reports found that only 2% of girls aged 12-17 met the Canadian Movement Guidelines that include adequate sleep and at least 60 minutes of moderate to vigorous activity. A Dalhousie University study noted that teenage girls are concerned about appearances when they exercise: they worry about being pretty but natural-looking, thin but not too skinny, fit but not too muscular. Their responses in the study suggest that outdoor activities can provide an important venue to feel comfortable, safe and confident doing physical activity, compared to a gym setting where, as self-conscious teenagers, they felt they needed to be more concerned about clothing and appearances.
How to get more people moving...
Community infrastructure can influence activity in the young and old. Open spaces, like parks and walking/biking paths, provide enjoyable and convenient opportunities for physical activity. A visible example is the throngs of people who use the skating oval added to the Commons in downtown Halifax. You can even borrow skates and helmets there for free!
High quality public transport and incentives to use it rather than motorized vehicles can result in an overall increased population activity being incorporated into daily routines for those who use the systems. I noticed a marked increase in my activity level when using public transit while travelling in Europe, just by walking to and from the nearest system access.
With statistical evidence that inactivity is worsening in too many areas year by year, and with a corresponding increase in chronic diseases like diabetes and heart disease, it is time to think seriously about ways to increase physical activity levels across populations.
So, if you want to reduce your chances of developing a chronic disease as you age, look for ways to incorporate more exercise into your day, and it doesn’t have to be a session at the gym. Remember that ten minutes of activity three times a day is considered equal to a single 30-minute session. Park farther away from the door when doing errands or take the stairs instead of the elevator – it all adds up. My husband and I enjoy a daily 25-minute walk to check our mailbox most days and climbing up and down the stairs in our 3-story house adds to the daily total.
How much should you exercise to benefit?
The World Health Organization guidelines for physical activity recommend a minimum of 150 minutes per week of moderate-intensity activity like brisk walking, biking or dancing… or 75 minutes a week of vigorous activity like jogging or playing an active sport. If you have a chronic disease, check with your doctor first, start slowly and increase activity gradually. You can expect a few sore muscles as you begin but stop exercising and contact your doctor right away if you experience any chest pain or other alarming symptoms. Any exercise that makes it difficult to speak is likely too intense and could be a risk to your immediate health. Specialized exercise programs are available in some areas to help those with chronic diseases, such as heart disease or back problems, to get started safely. The cardiac rehab program my husband took after his heart attack 14 years ago was a game-changer, and we’ve worked to keep up our activity level since then.
So, don't be surprised if your doctor gives you an unusual prescription...
In addition to the Moving Medicine program in UK mentioned above, Canadian medical schools are also revising their curricula to teach future doctors about the benefits of exercise to prevent and treat chronic diseases. It’s better and less costly to prevent diseases than to treat them!
(Please note that underlined phrases above and in the references are links to the source of the information)
References:
Exercise is Medicine, and Doctors are Starting to Prescribe It, The Conversation
Prescribing Movement (UK website under development to encourage doctors to prescribe exercise)
