RSM-ORT-009
Written by Hironori Ikeda, MSc Sports Medicine
RSM International Academy · Chiang Mai, Thailand
What Can You Actually Tell From the Way a Client Breathes?
A rising abdomen does not reveal how far the diaphragm moved, how much pressure it produced or whether breathing is normal. Likewise, a small visible rib movement may reflect the task and position rather than a diaphragm disorder.
I begin with breathing comfort and the situation that causes difficulty. I compare ordinary breaths with a comfortable fuller breath and, when appropriate, the relevant light activity.
This guide separates diaphragm excursion, its contact with the lower rib cage and task-related pressure. It shows how to make useful external comparisons while recognizing what requires medical respiratory assessment.
In This Article
- What Can You Actually Tell From the Way a Client Breathes?
- In This Article
- 1. Diaphragm Excursion Is Not the Same as Belly Movement
- 2. Apposition: Why the Diaphragm Can Also Move the Lower Ribs
- 3. Compare Breath Depth and Position One at a Time
- 4. Compare Breathing During a Specific Light Task
- 5. Trial Comfortable Support and Re-test the Original Breath
- Related RSM Clinical Blogs
- Study Orthopedic Massage at RSM
1. Diaphragm Excursion Is Not the Same as Belly Movement
The diaphragm is a muscle separating the thoracic and abdominal cavities. During inspiration it contracts and its dome descends, increasing thoracic volume. During quiet expiration, relaxation and elastic recoil help air leave; a forceful exhalation involves additional muscle activity.
Excursion means the diaphragm's displacement during a specified breath. Appropriately trained clinicians can measure that distance with M-mode ultrasound: a study of 210 healthy adults assessed quiet breathing, sniffing and deep breathing separately, rather than treating them as one normal range. Watching the abdomen rise remains an indirect observation of the whole system, not an equivalent measurement. A visible change after coaching cannot establish whether diaphragm excursion increased, and a loaded activity adds a different demand again.
I therefore record the instruction and the client's comfort before interpreting the pattern. I do not prescribe a universal amount of belly movement or label the diaphragm weak from a small excursion seen at the skin. Suspected respiratory dysfunction belongs in an appropriate medical assessment.
2. Apposition: Why the Diaphragm Can Also Move the Lower Ribs
The diaphragm has costal, sternal and lumbar attachments. Its zone of apposition is the portion lying against the inner lower rib cage. This relationship matters because the muscle's action is more complex than a piston moving only downward.
The De Troyer and Wilson review describes an outward action at the lower ribs from the diaphragm's attachments and from abdominal pressure transmitted through the apposed region. Lung volume, pleural pressure and abdominal support change the balance of these forces.
This explains why a single chest-versus-belly label is incomplete. It does not let me identify the apposition area, measure pressure or diagnose weakness with my hands. I use the anatomy to frame a comparison, not to promise that pressing under the ribs restores the mechanism.
3. Compare Breath Depth and Position One at a Time
I first observe ordinary breathing in a comfortable position, noting effort, symptoms and the movement visible at the anterior, lateral and posterior lower ribs. With consent, light contact can help compare local excursion. It cannot tell me the diaphragm's force or the volume of air entering the lungs.
I next ask for one comfortable fuller breath without forcing or straining. If I compare another position, I return to the original quiet-breath instruction. Healthy-subject research shows that support and position can alter chest and abdominal contributions even without a treatment.
New unexplained breathlessness, difficulty breathing when lying down or declining exercise tolerance warrants medical review. Severe breathing difficulty, inability to speak normally because of breathlessness, or chest tightness or heaviness needs emergency care. I do not persist with repeated deep breaths to normalize the appearance.
4. Compare Breathing During a Specific Light Task
The diaphragm's excursion is its movement during breathing; the zone of apposition describes the portion adjacent to the inner lower rib cage. Neither can be measured by watching a shirt move. In teaching, I distinguish those anatomical ideas from what we can actually record: an ordinary breath, a comfortable arm hold and whether effort or the familiar symptom changes. If reducing the arm demand restores comfortable breathing, that is a useful task modification, not a measurement of improved abdominal pressure.
When appropriate, I compare resting breaths with a brief comfortable arm hold in shoulder flexion, keeping the seat and support unchanged. I record arm position, load, breath holding and the familiar symptom. I reduce or stop the task if it causes distress rather than coaching the client through it.
Kolar and colleagues studied diaphragm behavior using imaging and respiratory measurement during specified limb-loading tasks. Their group comparison does not show that a clinician can measure pressure externally or that one breathing correction treats back pain. My observation helps select the next assessment, not infer a hidden muscle deficit.
5. Trial Comfortable Support and Re-test the Original Breath
For a suitable local musculoskeletal complaint, I may trial comfortable support, gentle active thoracic motion or tolerable external rib-region contact. I do not drive fingers beneath the costal margin or describe this as directly releasing the diaphragm. Stop if the client develops dizziness, air hunger or increasing discomfort.
I repeat the original breathing instruction in the same position, then the same light task if it was relevant. I record comfort, effort and visible excursion separately. If support or load remains different, I document the modified condition instead of attributing the change to massage.
Massage guidance supports caution about limited and sometimes short-lived benefits, not claims of restored diaphragm strength or lung capacity. A comfortable immediate response is useful feedback; persistent respiratory symptoms still need appropriate assessment. The goal is a defensible next decision based on the client's actual difficulty.
Related RSM Clinical Blogs
Browse all Orthopedic Massage for Spine Mobility & Breathing clinical guides
▷ Diaphragm & Pelvic Floor: How Breathing Links Them — Orthopedic Massage — Spine Mobility & Breathing · Extend the pressure discussion to external assessment and pelvic-health referral boundaries.
▷ Rib Flare: Rib-Pelvis Position, Obliques & Diaphragm — Deep Tissue Massage · Compare rib-pelvis position, abdominal-wall actions and the same functional task.
▷ Rib Flare: Breathing, Abdominal Wall & Rib-Pelvis Position — Dynamic Posture Assessment · Assess whether a rib-flare observation changes with breathing and task conditions.
Study Orthopedic Massage at RSM
The Orthopedic Massage — Spine Mobility & Breathing Course teaches external rib and spinal assessment linked to the client's functional complaint.
Trigger Point Therapy provides foundational palpation skills, and Dynamic Posture Assessment develops comparisons across position and loading. Deep Tissue Massage adds precision in regional tissue contact. These skills support clinical reasoning without substituting manual impressions for respiratory testing. Confirm the study route with RSM.
View the course schedule and entry requirements · Ask about course suitability and registration
About the Author
Hironori Ikeda, MSc Sports Medicine
Hironori leads RSM International Academy in Chiang Mai, Thailand. His teaching connects functional anatomy, clinical palpation and kinetic-chain assessment with practical massage decisions.
Read Hironori’s professional background and teaching approach