Atrial Fibrillation (AF)
What is atrial fibrilation?
Atrial fibrillation (AF) is a common type of cardiac arrhythmia, meaning the heart beats in an irregular or uncoordinated way. The heart consists of four chambers — two upper chambers called the atria and two lower chambers called the ventricles. Normally, electrical signals move from the atria to the ventricles in a smooth, organised pattern.
In AF, the electrical activity in the atria becomes chaotic. Instead of contracting in a steady rhythm, the atria quiver or “fibrillate,” causing the ventricles to beat irregularly as well. This can lead to symptoms such as:
- A fast or pounding heartbeat
- Shortness of breath
- Light-headedness or dizziness
- Fatigue
- Occasional chest discomfort
While AF itself isn’t immediately life-threatening, it significantly increases the risk of blood clots, stroke, and long-term heart complications such as heart failure if not managed properly.
Is it safe to exercise?
Yes! Exercise is generally safe and highly beneficial for people with AF, as long as you’ve been assessed and cleared by a healthcare professional.
How does exercise help?
Exercise plays a powerful role in improving heart health and managing AF:
- Strengthens the heart muscle
Regular physical activity improves the efficiency of the heart, making it pump more effectively, reducing the workload.
- Enhances electrical stability
Exercise helps balance the autonomic nervous system, which controls heart rate.
- Reduces inflammation and improves blood flow
Aerobic exercise enhances vascular health, reduces stiffness in blood vessels, and supports healthier electrical conduction pathways within the heart.
- Improves oxygen delivery
As cardiovascular fitness improves, the body becomes more efficient at transporting oxygen to muscles and organs, reducing strain on the heart during daily tasks.
- Reduces stress
Psychological stress is a well-known contributor to AF episodes. Exercise releases endorphins and helps regulate cortisol, promoting long-lasting stress relief.
Improved functionality
People with AF who exercise regularly often report:
- Better tolerance for everyday activities such as walking, climbing stairs, and household tasks
- Reduced frequency and severity of AF symptoms
- Improved energy levels and reduced fatigue
- Better sleep quality
- Enhanced mood and reduced anxiety
- Lower blood pressure and improved cholesterol levels
Over time, these exercise benefits translate to improved quality of life, greater independence, and reduced risk of long-term complications.
Our Exercise Physiologists are trained and experienced to help people with exercise guidance to better manage AF.
So let’s get started on managing your atrial fibrillation better through safe exercise!
Written by Sophie Annear
Exercise Physiologist
Marden myPhysioSA
