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Exercise 'potentially as effective' as many drugs for common diseases

Date:
October 1, 2013
Source:
BMJ-British Medical Journal
Summary:
Physical activity is potentially as effective as many drug interventions for patients with existing coronary heart disease and stroke, suggests a review of evidence.

Exercise should be considered as a viable alternative to, or alongside, drug therapy.
Credit: Monkey Business / Fotolia

The researchers argue that more trials comparing the effectiveness of exercise and drugs are urgently needed to help doctors and patients make the best treatment decisions. In the meantime, they say exercise "should be considered as a viable alternative to, or alongside, drug therapy."

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Physical activity has well documented health benefits, yet in the UK, only 14% of adults exercise regularly, with roughly one third of adults in England meeting recommended levels of physical activity. In contrast, prescription drug rates continue to skyrocket, sharply rising to an average of 17.7 prescriptions for every person in England in 2010, compared with 11.2 in 2000.

But there is very little evidence on how exercise compares with drugs in reducing the risk of death for common diseases.

So researchers based at the London School of Economics, Harvard Pilgrim Health Care Institute at Harvard Medical School and Stanford University School of Medicine set out to compare the effectiveness of exercise versus drugs on mortality across four conditions (secondary prevention of coronary heart disease, rehabilitation of stroke, treatment of heart failure and prevention of diabetes).

Secondary prevention refers to treating patients with existing disease before it causes significant illness.

They analysed the results of 305 randomised controlled trials involving 339,274 individuals and found no statistically detectable differences between exercise and drug interventions for secondary prevention of heart disease and prevention of diabetes.

Among stroke patients, exercise was more effective than drug treatment, while for heart failure, diuretic drugs were more effective than exercise and all other types of drug treatment.

The authors point out that the amount of trial evidence on the mortality benefits of exercise is considerably smaller than that on drugs, and this may have had an impact on their results.

They argue that this "blind spot" in available scientific evidence "prevents prescribers and their patients from understanding the clinical circumstances where drugs might provide only modest improvement but exercise could yield more profound or sustainable gains in health."

Despite this uncertainty, they say that, based on the available data, physical activity is potentially as effective as many drug interventions -- and call for more trials to address the disparity between exercise and drug-based treatment evidence.

"In cases where drug options provide only modest benefit, patients deserve to understand the relative impact that physical activity might have on their condition," they conclude.


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Cite This Page:

BMJ-British Medical Journal. "Exercise 'potentially as effective' as many drugs for common diseases." ScienceDaily. ScienceDaily, 1 October 2013. <www.sciencedaily.com/releases/2013/10/131001192009.htm>.
BMJ-British Medical Journal. (2013, October 1). Exercise 'potentially as effective' as many drugs for common diseases. ScienceDaily. Retrieved March 4, 2015 from www.sciencedaily.com/releases/2013/10/131001192009.htm
BMJ-British Medical Journal. "Exercise 'potentially as effective' as many drugs for common diseases." ScienceDaily. www.sciencedaily.com/releases/2013/10/131001192009.htm (accessed March 4, 2015).

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