High-intensity interval training and intermittent fasting improve health in overweight women

There are many potential health benefits of intermittent fasting and high-intensity interval training (HIIT), especially for people who are overweight or obese. Now, a new study offers fresh evidence that taking both approaches at once may be better at attacking risk factors like high blood sugar and excess fat around the midsection that can lead to heart attacks and strokes.

“Isolated time-restricted eating and HIIT have received increasing attention as effective and feasible strategies for at-risk populations,” senior author Trine Mohold, PhD, head of the Exercise, Cardiometabolic Health and Reproduction Research Group at the Norwegian University of Science and Technology in Trondheim, it said in a statement. “We wanted to compare the effects of the combination of time-restricted eating and HIIT with their isolated effects and determine whether time-restricted eating and HIIT would act synergistically to improve health in individuals at risk of cardiometabolic disease.”

In the United States alone, about 47 million adults live with a group of interrelated conditions known as cardiometabolic disorders that increase the risk of type 2 diabetes, heart attacks and strokes, according to the American College of Cardiology (ACC). These conditions, which often occur in combination and are more common in overweight and obese people, include: high blood pressure, high blood sugar, high cholesterol and excess fat accumulation around the midsection, which is known as abdominal obesity .

For the study, researchers randomly assigned 131 overweight or obese women to one of four groups: HIIT alone, time-restricted eating alone, a combination of both interventions, or a control group with no intervention. All participants had one or more cardiometabolic conditions that are risk factors for type 2 diabetes and cardiovascular disease.

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