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Tag: atrial fibrillation (AF)

Published on Leave a comment on Atrial Fibrillation Can Be Improved With Exercise

Atrial fibrillation (a quivering or irregular heartbeat) can be very frightening for the person experiencing it. This heart arrhythmia disorder can be treated with medicines or surgical ablation, but new research suggests that it also can be improved after 6 months of exercise - about 3.5 hours per week.

Researchers at the University of Adelaide randomly assigned 120 patients with atrial fibrillation (AF) to either receive an exercise regimen for 6 months or no exercise regimen. All persons received "usual medical care". [Note: it is not clear what usual medical care involved.] After 6 months and at 12 months, the exercise group had a lower incidence of recurrent AF  and less severe AF symptoms. The exercise helped maintain normal heart rhythm.

The exercise group had supervised exercise once per week for 3 weeks, and then every other week for 3 months, as well as an exercise plan to follow at home. The goal was to increase aerobic exercise up to 3.5 hours per week. Supervised exercise session were higher intensity to increase cardiorespiratory fitness, and home based  exercise was of moderate intensity (e.g. walking, indoor cycling, swimming).

Bottom line: Exercising up to 3.5 hours per week might improve and control AF so that medications or surgery are not necessary.

From ScienceDaily: Exercise maintains normal heart rhythm in patients with atrial fibrillation

A six-month exercise programme helps maintain normal heart rhythm and reduces the severity of symptoms in patients with atrial fibrillation, according to late breaking research presented at ESC Congress 2021.1  ...continue reading "Atrial Fibrillation Can Be Improved With Exercise"

Published on Leave a comment on Fish oil Supplements and Increased Risk of Atrial Fibrillation

Once again a study finds that taking supplements can be problematic. This time it's fish oil supplements for heart health. Researchers found that taking routine daily fish oil supplements was linked to an increased risk of atrial fibrillation, a heart rhythm disorder. Atrial fibrillation is linked to higher risk of stroke and death.

The international research team analyzed five studies in which people with high blood lipids (elevated plasma triglycerides) took fish oil supplements hoping that it would improve their heart health. The studies were well done, with people randomly assigned to different groups But the results turned out that instead of helping, fish oil supplements appeared to cause a problem - increased risk of atrial fibrillation.

What to do for heart health? Focus on eating a healthy diet with lots of "real" foods, similar to a Mediterranean diet. That is, a diet rich in whole grains, vegetables, fruits, legumes (beans), seeds, nuts, and fish. Avoid fast foods and highly processed foods. Get exercise (at least 2 1/2 hours per week - brisk walks count), and try to lose weight if overweight.

From Science Daily: Fish oil supplements and heart rhythm disorder: New analysis

Omega-3 supplements are associated with an increased likelihood of developing atrial fibrillation in people with high blood lipids. That's the finding of a study published today in European Heart Journal -- Cardiovascular Pharmacotherapy, a journal of the European Society of Cardiology (ESC).  ...continue reading "Fish oil Supplements and Increased Risk of Atrial Fibrillation"

Published on

Several more articles on the benefits of exercise. From Science Daily:

Train your heart to protect your mind

Exercising to improve our cardiovascular strength may protect us from cognitive impairment as we age, according to a new study. "Our body's arteries stiffen with age, and the vessel hardening is believed to begin in the aorta, the main vessel coming out of the heart, before reaching the brain. Indeed, the hardening may contribute to cognitive changes that occur during a similar time frame," explained the first author of the study. "We found that older adults whose aortas were in a better condition and who had greater aerobic fitness performed better on a cognitive test. We therefore think that the preservation of vessel elasticity may be one of the mechanisms that enables exercise to slow cognitive aging."

The researchers worked with 31 young people between the ages of 18 and 30 and 54 older participants aged between 55 and 75. This enabled the team to compare the older participants within their peer group and against the younger group who obviously have not begun the aging processes in question. None of the participants had physical or mental health issues that might influence the study outcome.

The results demonstrated age-related declines in executive function, aortic elasticity and cardiorespiratory fitness, a link between vascular health and brain function, and a positive association between aerobic fitness and brain function. "Although the impact of fitness on cerebral vasculature may however involve other, more complex mechanisms, overall these results support the hypothesis that lifestyle helps maintain the elasticity of arteries, thereby preventing downstream cerebrovascular damage and resulting in preserved cognitive abilities in later life."

From Science Daily:

Physically fit kids have beefier brain white matter than their less-fit peers

A new study of 9- and 10-year-olds finds that those who are more aerobically fit have more fibrous and compact white-matter tracts in the brain than their peers who are less fit. 'White matter' describes the bundles of axons that carry nerve signals from one brain region to another. More compact white matter is associated with faster and more efficient nerve activity.

The analysis revealed significant fitness-related differences in the integrity of several white-matter tracts in the brain: the corpus callosum, which connects the brain's left and right hemispheres; the superior longitudinal fasciculus, a pair of structures that connect the frontal and parietal lobes; and the superior corona radiata, which connect the cerebral cortex to the brain stem."All of these tracts have been found to play a role in attention and memory," Chaddock-Heyman said. 

From Science Daily:

Exercise may protect older women from irregular heartbeat

Increasing the amount or intensity of physical activity can cut the chances of older women developing a life-threatening irregular heartbeat, according to new research. Researchers found that post-menopausal women who were the most physically active had a 10 percent lower risk of developing atrial fibrillation (AF), compared to women with low levels of physical activity, even if they were obese. Obesity is an important risk factor for atrial fibrillation.