conceptshoulder-exercises
Pectoralis stretching
Notes
Pectoralis stretching
One-line summary: High-volume pec-major stretching increased extension ROM in healthy adults; pec-minor stretch plus lower-trap / posterior-tilt work beat stretch-or-tilt alone on some rounded-shoulder measures.
This page is research synthesis, not medical advice.
The insight
Pectoralis stretching appears in two roles in the retrieved abstracts: a 7-week pec-major program that increased shoulder-extension ROM and long-length isometric torque in healthy adults, and pec-minor stretching paired with scapular posterior-tilt or lower-trapezius strengthening in people labeled with rounded-shoulder posture. From 2026-08-22-academic-research-effective-shoulder-exercises-strength.
Evidence
- From 2026-08-22-academic-research-effective-shoulder-exercises-strength: Reiner et al. 2023 (n=38 healthy adults, 7 weeks, 3×/week, 15 min pec-major static stretch) — shoulder-extension ROM ~+6% (d=0.92) and isometric peak torque at a long muscle length ~+11% (d=0.76); no change in pec stiffness or short-length torque; no change in controls.
- From 2026-08-22-academic-research-effective-shoulder-exercises-strength: Lee et al. 2015 (n=15 young men with RSP) — scapular posterior-tilt after pec-minor stretching, and tilt with a shoulder brace, reduced RSP and increased a pec-minor length index more than tilt alone; lower-trapezius EMG was highest after stretch-then-tilt.
- From 2026-08-22-academic-research-effective-shoulder-exercises-strength: Hasan et al. 2023 (n=60 young Saudi women with rounded shoulders) — combining lower-trapezius strengthening with pec-minor stretching increased pec-minor resting length more than stretching alone; shoulder-flexion ROM improved in both arms without a between-group difference.
Contradictions / tensions
- Lee’s brace arm is a lab comparison, not a product review. From 2026-08-22-academic-research-effective-shoulder-exercises-strength.
- Reiner is a healthy-adult mobility/strength trial, not a desk-posture trial. Desk pairing lives on rounded-shoulder-posture and desk-sitting-to-rounded-shoulder-corrective-exercise.
Open questions
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