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FRIDAY, April 6, 2018 (HealthDay News) — High-intensity exercise in an independent marker for ventricular arrhythmia (VA) in arrhythmogenic cardiomyopathy (AC), according to a study published online March 28 in JACC: Clinical Electrophysiology<\/i>.<\/p>\n
\u00d8yvind H. Lie, M.D., from Oslo University Hospital in Norway, and colleagues recorded exercise habits at the time of diagnosis by standardized interviews in consecutive AC patients. Exercise >6 metabolic equivalents was defined as high intensity; exercise duration above the median was categorized as long. Data were included for 173 AC patients.<\/p>\n
The researchers found that the median weekly exercise duration was 2.5 hours and about half (52 percent) of patients reported high-intensity exercise. VA occurred in 48 percent of patients and was more prevalent in those with high- versus low-intensity exercise (74 versus 20 percent) and for long- versus short-duration exercise (65 versus 31 percent). High-intensity exercise was an independent marker for VA, even after adjustment for the interaction with long-duration exercise (odds ratio, 3.8); long-duration exercise was not.<\/p>\n
“High-intensity exercise was a strong and independent marker of life-threatening VA in AC patients, independent of exercise duration. AC patients could be advised to restrict their exercise intensity,” the authors write.<\/p>\n
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