CardioExchange Archive

April 6th, 2015

Cardiac Arrest During Exercise in Middle-Aged People

Larry Husten, PHD

Dropping dead while exercising is a common fear, especially among middle-aged men. Unfortunately there have been limited data on the precise rate of sudden cardiac arrest (SCA) in middle-aged people and little understanding about the medical history of the victims of SCA. Now a new study fills in some important gaps in knowledge and shows that this […]

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January 19th, 2015

Intense Exercise Doesn’t Eliminate the Hazard of Intense Sitting

Larry Husten, PHD

A large new analysis published in Annals of Internal Medicine supports earlier observations that the health hazards of sedentary behavior aren’t completely neutralized by exercise. Researchers in Toronto scoured the literature to find studies that assessed the health effects of sedentary behavior adjusted for physical activity. They found 47 studies, including 13 that assessed all-cause mortality, 14 that […]

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October 23rd, 2014

The Survival Benefits of Physical Activity: Moderate vs. Vigorous Intensity

Harlan M. Krumholz, MD, SM

Eric Shiroma discusses his research group’s study of the relative survival benefits of moderate- versus vigorous-intensity physical activity.

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July 29th, 2014

Cardiac Rehab for Heart Failure Patients: The CMS Is Convinced — Are You?

Ileana Piña, MD, MPH and John Ryan, MD

John Ryan interviews Dr. Ileana Piña about her work in HF-ACTION as it relates to the CMS’s recent expansion of cardiac rehabilitation coverage.

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July 28th, 2014

Death by Running: It’s the Heat and Not the Heart

Larry Husten, PHD

The growing popularity of marathons and other extreme sports has sparked worries about the potential dangers of these activities. The press and medical research have both focused on the risk for arrhythmias. But that concern may be misdirected. A new study from Israel published in the Journal of the American College of Cardiology finds that a much more […]

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July 28th, 2014

Running: Any Amount Is Good and More May Not Be Better

Larry Husten, PHD

Although there is broad agreement that exercise is beneficial, there has been substantial uncertainty about how much exercise is good for you. Recently some studies have suggested that too much exercise may actually reduce the benefits of exercise. Now a study published in the Journal of the American College of Cardiology finds that even a […]

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May 15th, 2014

Exercise: Can There Be Too Much of a Good Thing?

Larry Husten, PHD

In recent years researchers have developed a more complicated view of the relationship of health and exercise. Although observational studies have consistently shown that some physical activity is better than none, studies that have drilled deeper into the data suggest that these health benefits may be curtailed in people who exercise very frequently or very […]

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May 5th, 2014

Physical Activity Improves Heart Rate Variability In The Elderly

Larry Husten, PHD

A new study in Circulation offers fresh evidence that physical activity is beneficial to the heart in people aged 65 and older. Benefits were observed both in elderly people who reported the highest amount of overall physical activity and in those who increased their physical activity over time. U.S. researchers evaluated heart rate variability (HRV) using […]

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May 5th, 2014

What Role Should Coca-Cola Play in Obesity Research?

Larry Husten, PHD

Larry Husten asks: “What role should Coca-Cola and other food and beverage companies play in funding and communicating research about nutrition and obesity?”

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March 24th, 2014

Selections from Richard Lehman’s Literature Review: March 24th

Richard Lehman, BM, BCh, MRCGP

This week’s topics include non-leg venous thrombosis in critically ill adults, a comparison of factor Xa inhibitors and warfarin for preventing stroke and thromboembolism in atrial fibrillation, and more.

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