Pulmonary Rehabilitation Cadence Breathing
A paced breathing strategy utilized in pulmonary rehabilitation to reduce the work of breathing and prevent dynamic hyperinflation. It coordinates respiration with a set rhythm to improve oxygenation, empty the lungs effectively, and increase exercise tolerance.
- 1Find a comfortable seated or standing position and consciously relax your neck and shoulder muscles to prevent accessory muscle use.
- 2Inhale slowly and normally through your nose for a count of 2, allowing your belly to rise.
- 3Purse your lips as if you are about to whistle or gently blow out a candle.
- 4Exhale slowly and steadily through your pursed lips for a count of 4, ensuring the exhale is twice as long as the inhale.
- 5Maintain this steady 1:2 cadence for several minutes, or synchronize it with your steps if you are walking (e.g., inhale for 1 step, exhale for 2 steps).
By prolonging the expiratory phase, often combined with pursed lips, this technique creates intrinsic positive end-expiratory pressure (PEEP). This splints the small airways open, preventing premature collapse and reducing trapped air (dynamic hyperinflation) common in obstructive lung diseases. The controlled cadence decreases the overall respiratory rate, lowers the metabolic cost of breathing, and stimulates parasympathetic tone to mitigate dyspnea-induced anxiety.
Treats Symptoms
Target Metrics
Generally safe for all populations. However, patients experiencing an acute, severe exacerbation of COPD or asthma should seek immediate emergency medical care rather than relying solely on breathing exercises.
Verified Sources
Keep TryBreathing Free.
We are building the open-source Wikipedia of the human nervous system. No paywalls, no ads, no subscriptions. If this protocol helped you today, consider supporting the servers.
Support the MissionRecommended Reading & Tools
Deepen your understanding of respiratory physiology. These verified texts and tools form the foundational science behind many of the protocols in our directory.
Breath: The New Science of a Lost Art
By James Nestor
The Oxygen Advantage
By Patrick McKeown
The Breathing Cure
By Patrick McKeown
The Breather
Clinical Inspiratory Muscle Trainer (IMT)
TryBreathing is a free, community-supported resource. We may earn a small commission if you purchase through these verified clinical links, which directly funds our server costs.