EP332: The Importance of Exercise With Dr Jason Kaplan

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Podcast Summary Introduction Dr. Warrick Bishop, a cardiologist, author, and CEO of the Healthy Heart Network, hosts this episode with Dr. Jason Kaplan, a fellow cardiologist focused on preventative cardiology. The episode centers on exercise as a critical tool for cardiovascular health and disease prevention, featuring an extended mock patient consultation demonstrating how cardiologists prescribe exercise to patients with intermediate-to-high cardiovascular risk. Key Takeaways: If the cardiovascular benefits of exercise were bottled into a drug, it would become the world's best-selling medication due to its myriad biological effects on multiple body systems, not just the heart. The heart can remodel and improve its size and pumping function through athletic activity up to age 70, making it never too late to achieve cardiovascular improvements. Patients need specific exercise prescriptions rather than vague advice to "just exercise," tailored to their individual circumstances and cardiovascular risk profiles. For intermediate-to-high risk patients, baseline cardiovascular testing such as stress echocardiograms is important to establish safety and identify any lack of blood supply to the heart before beginning an exercise program. Moderate-intensity aerobic exercise of 150-300 minutes per week (such as walking at 4 km/h or recreational cycling) provides significant cardiovascular benefits and should feel like "zone two" effort where you're slightly puffed but can still talk. High-intensity interval training of 75-150 minutes per week achieves similar cardiovascular benefits to moderate exercise and is a practical alternative for time-constrained individuals. Aerobic exercise is more powerful than resistance training for improving blood pressure and endothelial function (artery lining health), though resistance training should complement aerobic activity. A maximum heart rate can be estimated using the formula 220 minus age, with most training occurring at 70-85% of maximum heart rate, though this is a general guide with individual variation. Cardiorespiratory fitness is directly correlated with cardiovascular longevity—the fitter someone is aerobically, the longer they will live. Exercise supplements medical treatment of cardiovascular risk factors by helping to lower blood pressure, improve cholesterol profiles, and facilitate weight loss while improving overall quality of life.