Cardio vs. Strength Training for Heart Health in Men

How Each Type of Exercise Affects the Heart

Aerobic exercise — running, cycling, swimming, brisk walking — challenges the heart to pump blood more efficiently over sustained periods. Over time, this leads to measurable adaptations: a lower resting heart rate, greater stroke volume (the amount of blood the heart pumps per beat), and improved elasticity in blood vessel walls. These changes collectively reduce the strain placed on the heart during everyday activity.

Strength training works through a different mechanism. Lifting weights creates temporary spikes in blood pressure and heart rate during sets, but the long-term cardiovascular adaptations are still meaningful. Regular resistance exercise reduces resting blood pressure, lowers LDL cholesterol in some populations, and — critically — reduces visceral fat, the deep abdominal fat most strongly associated with cardiovascular risk in men. It also improves insulin sensitivity, which is closely tied to heart disease risk.

For a broader look at how these two approaches compare across general health outcomes, see Strength Training vs. Cardio: What Actually Matters for Long-Term Health.

What the Research Generally Indicates

Decades of research have established aerobic fitness as one of the strongest predictors of cardiovascular mortality. Studies consistently show that men with higher cardiorespiratory fitness — regardless of body weight — face substantially lower risks of dying from heart disease. The relationship appears dose-dependent: more aerobic capacity generally correlates with better outcomes, though benefits plateau at very high levels.

Evidence for resistance training's heart benefits has grown considerably in recent years. A 2019 analysis published in Medicine & Science in Sports & Exercise found that resistance exercise was independently associated with reduced risk of cardiovascular events, even after controlling for aerobic activity levels. This suggests the two exercise types are not interchangeable — they each contribute something distinct.

Men who are curious about lower-intensity aerobic approaches may find it useful to read about Zone 2 cardio, a method emphasizing sustained, moderate effort that has drawn attention for its cardiovascular and metabolic benefits.

What Current Guidelines Recommend

The American Heart Association and the U.S. Department of Health and Human Services both recommend that adults aim for at least 150 minutes of moderate-intensity aerobic activity — or 75 minutes of vigorous activity — per week, combined with muscle-strengthening activities on two or more days per week. These aren't competing recommendations; they're designed to work together.

Research supports this combined approach. Men who perform both aerobic and resistance exercise tend to show better blood pressure, lipid profiles, and body composition outcomes than those who rely on only one type. The combination also appears to support longer-term adherence, partly because variety reduces monotony.

Exercise is just one component of heart health. Diet plays an equally important role — for more on how nutritional needs evolve for men specifically, see Nutrition Priorities That Shift as Men Get Older.

For men weighing how to structure their workouts socially or independently, Group Fitness Classes vs. Solo Training may help clarify which environment supports better consistency.

This article is for general informational and educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting, changing, or intensifying any exercise program, particularly if you have a known or suspected heart condition.