Heart Failure: Belly Fat Bad, Exercise Good
New Heart Failure Studies Show Increased Risk With Belly Fat
April 7, 2009 -- Belly fat may make heart failure more likely, and exercise may help heart failure patients.
That's the bottom line from three new studies on heart failure. Heart failure does not mean that the heart has stopped working; it means the heart is unable to pump enough blood to meet the body's needs.
The belly fat study is based on data from Sweden, where researchers followed more than 80,000 men and women for up to seven years to see who developed heart failure.
Participants reported their height, weight, and waist circumference at the study's start.
People with extra weight, especially around the waist, were more likely to develop heart failure during the study.
Bigger waistlines were linked to greater risk of heart failure for women, regardless of whether their BMI (body mass index) was normal, overweight, or obese. BMI and waist circumference both predicted heart failure risk in men.
The belly fat findings appear in the advance online edition of Circulation: Heart Failure.
Meanwhile, other researchers report in the Journal of the American Medical Association that exercise can be safe and effective for heart failure patients.
Their evidence comes from the largest study to date of exercise for heart failure patients.
Exercise and Heart Failure Study
More than 2,300 heart failure patients in the U.S., Canada, and France took part. They were screened to make sure they were healthy enough to exercise, and said they were willing to work out.
The researchers divided the patients into two groups.
All of the patients got standard medical care for their heart failure. In addition, one group of patients was assigned to get regular aerobic exercise.
Their workouts involved walking or using a treadmill or stationary bike three times per week, starting with 15- 30 minutes per session and boosting their workouts' length and intensity as the months passed.
Their first 36 workouts were supervised. After that, they were supposed to exercise at home using the heart monitors and stationary bikes or treadmills that the researchers supplied.
For comparison, patients in the other group weren't assigned to exercise.