How Exercise Makes Your Heart More Efficient – and Potentially Extends Your Life
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For years, fitness experts have touted the benefits of exercise. But new research reveals how exercise improves heart health, going beyond simply strengthening the muscle. A study led by Professor André la Gerche at the Baker Heart and Diabetes Institute shows that consistent, moderate exercise doesn’t just make your heart stronger; it makes each heartbeat more effective, potentially leading to a longer, healthier life.https://www.baker.edu.au/news/exercise-makes-your-heart-more-efficient-not-just-stronger
The Efficiency Advantage: More Life Per Beat
Traditionally, it was believed that a lower heart rate simply meant a stronger heart. However, Professor La Gerche’s research demonstrates a more nuanced relationship. The study found that regular exercise improves the heart’s ability to fill with blood and pump it out with each beat – increasing what’s known as stroke volume. https://www.heart.org/en/news/2024/02/29/exercise-makes-heart-more-efficient-not-just-stronger
This increased efficiency means the heart can circulate the same amount of blood with fewer beats overall. As Professor La Gerche explains, “For every hour you exercise, your heart beats more slowly for the other 23 hours.The net effect is fewer beats used overall.” This reduction in the total number of heartbeats over a lifetime is linked to improved longevity.
Why a Lower Resting heart Rate matters
A slower resting heart rate is a key indicator of cardiovascular fitness and overall health. It signifies that the heart muscle is strong and doesn’t need to work as hard to pump blood throughout the body. According to the Mayo Clinic,a normal resting heart rate for adults generally ranges from 60 to 100 beats per minute. https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/heart-rate/art-20042229 Well-trained athletes often have resting heart rates below 60 bpm.
Increasing physical activity, when done safely, can enhance heart performance and reduce the risk of cardiovascular disease, the leading cause of death globally. https://www.who.int/news-room/fact-sheets/detail/cardiovascular-diseases-(cvds))
Moderate Exercise: The Sweet Spot for Heart Health
While intense endurance training can temporarily increase daily heartbeats, the benefits of consistent, moderate exercise are far more significant for the average person. Professor La Gerche emphasizes, “The biggest bang for your health buck is going from unfit to moderately fit.”
What constitutes moderate exercise? The Centers for Disease Control and Prevention (CDC) recommends at least 150 minutes of moderate-intensity aerobic exercise per week. https://www.cdc.gov/physicalactivity/basics/adults/index.htm Examples include brisk walking, cycling at a leisurely pace, and swimming.
Just a few hours of purposeful exercise each week can transform your heart’s efficiency and potentially extend your life by years.
The HEART Lab: Uncovering the Secrets of Exercise and the Heart
Professor La Gerche leads the Heart, Exercise & Research Trials (HEART) Lab at the Baker Heart and diabetes Institute, in partnership with the Swinburne University of Technology and the Victorian Heart Institute. https://www.baker.edu.au/research/heart-exercise-research-trials-heart-lab The lab investigates how exercise influences heart health, studying both elite athletes and individuals with heart conditions.
By examining the hearts of high-performing athletes,researchers gain valuable insights applicable to a broader population,including those managing serious heart conditions. This research helps to develop more effective strategies for preventing and treating cardiovascular disease.
Key Takeaways:
* Efficiency over Strength: Exercise improves the efficiency of the heart, not just it’s strength, leading to fewer beats over a