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Tag: physical activity

Physical Activity to Combat Cardio Risk

A study of close to 500,000 people without cardiovascular disease at baseline showed that total physical activity related to work, recreation, or utilitarian needs such as walking to do errands was associated with a lower short-term risk of developing CVD. The researchers found that there is a “clearly positive . . . dose-response relationship between levels of total activity and risks of major CVD,” senior author Dr Zhengming Chen (University of Oxford, UK) told theheart.org | Medscape Cardiology.

Lead author Dr Derrick A Bennet (Oxford University) and colleagues analyzed data from adults who participated in the China Kadoorie Biobank study, and their findings were published November 8, 2017 in JAMA Cardiology.
Compared with people in high-income countries, these participants in middle-income China had a much higher average level of physical activity: 21.5 metabolic equivalents of task (MET) hours/day, which equals 5 hours of cycling or brisk walking a day.

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Move — and Move Often!

While most physicians and nutritionists agree that low to moderate levels of weekly physical activity is often insufficient to significantly reduce body weight, studies indicate that those who transition from little to no daily physical activity to moderate levels have clinically meaningful reductions in cardiometabolic risk.

Scores of controlled trials over the last decade demonstrate that physical activity helps mitigate and reduce cardiometabolic risk via biologic mechanisms, which are not entirely dependent upon body weight or BMI reduction. Research increasingly supports that those who have prediabetes should consistently increase physical activity levels, despite little to no weight loss.

According to research published in the European Journal of Preventive Cardiology, the benefits of physical activity may outweigh the impact of being overweight and/or obese in middle-aged and elderly people. The observational study, conducted with a sample size of over 5,000 people aged 55 years and older, followed up with participants for 15 years. While overweightness and obesity is associated with a higher risk of cardiovascular disease, and weight loss is recommended, it is slightly different with the elderly population: weight loss, especially unintentional, is often associated with muscle loss and death.

Regardless of age, physical activity is associated with a lower risk of cardiovascular disease. Studies have further demonstrated that physical activity is protective for cardiovascular risk, playing a crucial role in the health of middle-aged and elderly people. Without adequate physical activity, those who are overweight and obese are at a significantly higher risk of developing cardiovascular disease.

The harmful effects of overweightness and obesity occur through adipose tissue, which accelerates the atherosclerotic process, thereby increasing cardiovascular risk. Exercise and physical activity lowers the harmful effects of atherosclerosis by reducing the stabilization of plagues on blood vessels, ultimately reducing the heart’s oxygen demand. Engaging in high levels of physical activity protects people from the harmful effects of adipose tissue on cardiovascular disease. The idea: move—and move often!