Exercise, Physical Fitness Bring Cardiovascular Benefits

Exercise, Physical Fitness Bring Cardiovascular Benefits

Exercise, Physical Fitness Bring Cardiovascular Benefits

Results-Grip strength, physical activity, and cardiorespiratory fitness showed inverse associations with incident cardiovascular events (coronary heart disease: hazard ratio [HR], 0.79; 95% confidence interval [CI], 0.77- 0.81; HR, 0.95; 95% CI, 0.93-0.97; and HR, 0.68; 95% CI, 0.63-0.74, per SD change, respectively; atrial fibrillation: HR, 0.75; 95% CI, 0.73- 0.76; HR, 0.93; 95% CI, 0.91-0.95; and HR, 0.60; 95% CI, 0.56-0.65, per SD change, respectively).

Led by researchers at Stanford University School of Medicine along with Uppsala University in Sweden, the team looked at data from 482,702 participants age 40 to 69 in the United Kingdom, making it one of the largest observational studies to be carried out to date on fitness and heart disease.

The researchers looked at people who had a family or genetic history of heart disease but did not have any current heart problems, and found that overall, exercise lowered their risk of having heart problems over about six years.

A paper describing the research was published online April 9 in Circulation.

Given little has been known about the risk-modifying effects of exercise in individuals with increased genetic risk of cardiovascular disease, these results could have important ramifications for public health the study said. During that time, nearly 21,000 of them experienced a cardiovascular "event", such as a heart attack, stroke, heart failure, or a diagnosis of atrial fibrillation (an irregular heartbeat that increases risk of stroke, heart failure, and other complications).

When heart disease runs in the family, a more physical activity may be the best defence, say researchers.

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The people with the weakest grips, were more at risk to these conditions. They found that people with higher levels of grip strength, physical activity and cardiorespiratory fitness had reduced risks of heart attacks and stroke, even if they had a genetic predisposition for heart disease.

For men and women at a high genetic risk for heart disease, high fitness levels was linked to a 49% lower risk for coronary heart disease and a 60% lower risk for atrial fibrillation.

All of the people in the case study were at risk of getting Heart Disease due to their genetic background.

"We can't definitely claim a causal connection, observational studies are created to establish trends".

The International Physical Activity Questionnaire was used to assess self-reported exercise, while wrist-worn accelerometers, hand dynamometers (grip strength) and submaximal exercise treadmill were used for objective measures. According to ABC News, study participants also had other risk factors as well which made them at greater risk for Heart Disease including: high blood pressure, high cholesterol and diabetes. According to new research, people with genetic disturbances that lead to Heart Disease and heart attacks, can reverse some of the potential damage by getting more active.

Each person in the study was categorized by their risk factors as either: high risk, moderate risk or low risk.

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