The Role of Breathing in Musculoskeletal Rehabilitation

Breathing retraining has moved from an adjunct to a primary intervention in musculoskeletal rehabilitation over the past two decades, driven by research establishing that breathing pattern — rate, depth, and location of movement — directly influences spinal stability, autonomic nervous system tone, pain sensitivity, and the muscle activation patterns that drive upper cervical and thoracic dysfunction. The diaphragm is simultaneously a respiratory muscle, a spinal stabiliser (through its contribution to intra-abdominal pressure), and an autonomic regulator (through its influence on vagal afference). Restoring its optimal function addresses all three of these clinical domains simultaneously.

The most common dysfunctional breathing pattern — upper chest or accessory muscle breathing — is characterised by visible upper thoracic and shoulder elevation during normal tidal breathing, with minimal abdominal movement. This pattern is both a consequence of pain and stress (sympathetic activation shifts breathing to the upper chest) and a driver of ongoing pain (upper chest breathing maintains sympathetic tone, overloads the cervical accessory breathing muscles, and generates the CO₂ washout that sensitises the nervous system).

Clinical Assessment

The Hi-Lo test: one hand on the sternum, one on the abdomen. During quiet resting breathing, the abdominal hand should rise first and further; the chest hand should move minimally. Upper chest dominant breathing is present when the chest hand rises first or more prominently. The breathing rate at rest should be 10–14 breaths per minute; rates above 16 suggest ongoing accessory muscle reliance. Observation during provocative tasks — sustained postures, arm elevation, speaking — reveals how breathing is integrated (or fails to be integrated) with movement.

The Retraining Protocol

Phase 1 — Awareness and diaphragmatic activation: Supine position, knees bent. Hands on lower ribcage (not abdomen — this teaches lateral rib expansion rather than just abdominal push). Instruct gentle nasal inhalation, feeling the lower ribs expand laterally against the hands. Exhalation is passive, through the nose. 5 breaths with full attention, 3× daily.

Phase 2 — Rate and rhythm: Once the pattern is established, work on slowing the breathing rate to 5–6 breaths per minute (5-second inhale, 5-second exhale). This rate generates maximal respiratory sinus arrhythmia and parasympathetic activation. Immediate effects include reduced heart rate, reduced muscle tension, and improved pain threshold — demonstrable within a single 5-minute session.

Phase 3 — Integration with posture and movement: Maintain the established breathing pattern during sitting, standing, and progressively during exercise. The common failure is breath holding during effort — this must be identified and retrained in all functional positions.

Breathing as a measurable clinical intervention: The effects of breathing retraining are measurable in clinical practice. Morning HRV (heart rate variability) via a simple phone-based app provides a proxy measure of parasympathetic tone that improves within 2–3 weeks of consistent diaphragmatic breathing practice. Pain threshold scores, cervical rotation range, and upper trapezius trigger point sensitivity all show measurable improvement with breathing retraining, independent of other manual therapy interventions.

References & Further Reading

  1. Chaitow L. Breathing pattern disorders, motor control, and low back pain. J Osteopath Med. 2004;7(1):33–40.
  2. Lehrer PM, Gevirtz R. Heart rate variability biofeedback: how and why does it work? Front Psychol. 2014;5:756.
  3. McLaughlin L. Breathing evaluation and retraining as an adjunct to manual therapy. Man Ther. 2009;14(4):338–344.