In a nutshell
This study examined the link between physical activity and mortality in patients with stable coronary heart disease (CHD). It was determined that increasing physical activity lowered mortality.
Increasing the duration and intensity of exercise decreases mortality in all people. At least 150 minutes of moderate-intensity exercise, or 60-75 minutes of vigorous exercise each week is recommended in patients with stable CHD. Few studies have examined the potential benefits of lower-intensity exercise in patients with CHD.
Methods & findings
This study examined 15,486 patients with stable CHD. At the start of the study they were given a questionnaire. They were asked questions about the hours spent each weak taking mild, moderate, and vigorous exercise. They were then followed for an average of 3.7 years.
The most active participants were less likely to have chronic kidney disease, CHD affecting many blood vessels, or diabetes. Doubling exercise volume was associated with lower mortality from all causes and cardiovascular causes. Doubling exercise volume involves either increasing intensity, or doubling duration of exercise. The risks of heart attacks and stroke were not significantly affected by exercise levels.
Those who took the least exercise benefitted the most from increasing physical activity. Those with diabetes, significant kidney problems, or CHD affecting many blood vessels also benefited more from increasing physical activity.
The bottom line
The study concluded that increased physical activity decreases mortality in people with CHD. The least active people may benefit the most from increasing physical activity.
The fine print
The data on physical activity was self-reported by the participants. Data collected in this way is not always reliable.
Discuss the benefits of increasing physical activity with your physician. It is always important to check with your physician before starting a new exercise program or increasing the intensity of a previous program.
Published By :
Journal of the American College of Cardiology
Oct 03, 2017
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