560 Minutes of Weekly Exercise Needed for Real Heart Protection

By VirentaNews Staff — May 19, 2026

Over 17 million people die from cardiovascular diseases each year, making heart attacks and strokes the leading cause of death globally, according to the World Health Organization. Yet a groundbreaking observational study published in the British Journal of Sports Medicine suggests that the amount of physical activity needed to meaningfully reduce this risk far exceeds current public health recommendations. The research indicates that adults who engage in between 560 and 610 minutes per week of moderate to vigorous physical activity—activities such as brisk walking, cycling, or aerobic exercise—experience a 39% to 40% lower risk of heart attack and stroke compared to those who are less active. This threshold is more than double the widely accepted guideline of 150 minutes per week, challenging long-standing assumptions about what constitutes sufficient exercise for heart health.

A Paradigm Shift in Exercise Recommendations

For over a decade, global health authorities including the World Health Organization (WHO) and the American Heart Association have recommended that adults complete at least 150 minutes of moderate-intensity aerobic activity—or 75 minutes of vigorous activity—each week to maintain cardiovascular health. These guidelines, last updated in 2020, were based on robust evidence linking even modest physical activity to reduced mortality. However, the new analysis, which pooled data from nine prospective cohort studies involving over 200,000 adults across the U.S. and Europe, suggests that while 150 minutes offers some benefit, it may fall short of unlocking the full protective potential of exercise. The study’s findings indicate a strong dose-response relationship: the more physical activity individuals accumulate, the greater the reduction in cardiovascular risk—up to a plateau around 600 minutes per week. This implies that public health messaging may need recalibration to reflect optimal, rather than minimal, thresholds for heart disease prevention.

How the Study Measured Activity and Outcomes

Researchers utilized accelerometer data—a more accurate measure than self-reported exercise—to track participants’ physical activity levels over several years. This method captures real-world movement intensity and duration without relying on memory or subjective interpretation. Over an average follow-up period of seven years, researchers recorded thousands of cardiovascular events, including heart attacks, strokes, and hospitalizations for coronary artery disease. After adjusting for confounding factors such as age, sex, smoking, body mass index, and pre-existing conditions, the data revealed that individuals averaging 560 to 610 minutes per week of moderate to vigorous physical activity had the lowest incidence of cardiovascular events. Notably, benefits plateaued beyond this range, suggesting diminishing returns at higher volumes. The study, conducted by a team from the University of Sydney and the University of Southern Denmark, underscores the importance of objective measurement in shaping health guidelines and offers a clearer picture of the activity levels associated with maximal heart protection.

Why More Exercise Equals Greater Protection

The biological mechanisms behind the protective effect of high-volume exercise are well-documented. Regular physical activity improves endothelial function, reduces systemic inflammation, lowers blood pressure, enhances insulin sensitivity, and improves lipid profiles—all of which contribute to atherosclerosis prevention. The new findings suggest that these benefits accumulate in a graded manner, meaning that greater activity leads to more pronounced improvements in cardiovascular physiology. Dr. Emmanuel Stamatakis, a co-author and professor of public health at the University of Sydney, noted that while 150 minutes a week may prevent some diseases, it likely represents a ‘floor’ rather than an ‘optimal’ target. He explained that modern sedentary lifestyles, even among those who meet current guidelines, may necessitate higher activity levels to counteract prolonged sitting and metabolic sluggishness. The study also found that spreading activity across the week—rather than cramming it into one or two days—was associated with better outcomes, reinforcing the value of consistency.

Who Stands to Benefit—and Who Can’t Keep Up

While the study’s implications are significant, its recommendations may be difficult for many adults to achieve. Only about 20% of U.S. adults meet the current 150-minute benchmark, according to data from the Centers for Disease Control and Prevention (CDC). Expecting five to six hours of weekly exercise may seem unrealistic, especially for those with demanding jobs, caregiving responsibilities, or limited access to safe recreational spaces. However, the research does not suggest abandoning lower activity levels. Even those who exercised between 150 and 300 minutes per week saw a 20% to 25% reduction in cardiovascular risk. The findings instead emphasize a spectrum of benefit: more activity yields greater protection. For public health officials, this raises questions about how to support broader populations in increasing physical activity—through urban planning, workplace wellness programs, or policy interventions—without exacerbating health inequities.

Expert Perspectives

Experts are divided on how to interpret and apply these findings. Some, like Dr. Susan Lakoski from the University of Vermont, argue that the study strengthens the case for personalized exercise prescriptions. “We’ve treated physical activity like a one-size-fits-all recommendation, but people have different baselines and risks,” she said in an interview with The New York Times. Others caution against discouraging people with overly ambitious targets. Dr. Aaron Baggish of Massachusetts General Hospital warned that “if we set the bar too high, we risk making people feel like failure for doing something that’s already beneficial.” Meanwhile, proponents of public health reform see the data as a wake-up call to redesign environments that make sustained activity easier, such as walkable cities and active transport infrastructure.

Looking ahead, researchers call for randomized controlled trials to confirm whether increasing activity to 600 minutes per week causally reduces cardiovascular events. They also stress the need for nuanced guidelines that reflect individual risk profiles. As sedentary behavior continues to rise globally, the question is no longer just whether to exercise—but how much is truly enough to protect the heart. The answer, it appears, may be far more than we’ve been told.

Source: MedicalXpress