How much harm is done – and how quickly – by failing to maintain an exercise program? How long does it take to reverse those consequences? No-one has the final answer to those questions, firm numbers derived from the way in which the human body functions. We can look at the results of studies such as this one with some interest, however. We might compare this with studies of weight and mortality, in which the evidence suggests that lasting harm is done by carrying excess fat tissue over years, even if lost later.
By analyzing reported physical activity levels over time in more than 11,000 American adults, researchers conclude that increasing physical activity to recommended levels over as few as six years in middle age is associated with a significantly decreased risk of heart failure. The same analysis found that as little as six years without physical activity in middle age was linked to an increased risk of the disorder. “In everyday terms our findings suggest that consistently participating in the recommended 150 minutes of moderate to vigorous activity each week, such as brisk walking or biking, in middle age may be enough to reduce
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