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Pectoralis major muscle strain: understanding your shoulder pain and getting back to activity

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What is a pectoralis major muscle strain?

Pectoralis major anatomy

Pectoralis major is a broad muscle at the front of the chest, attaching to the breastbone, collarbone and ribs before converging into a shared tendon that attaches to the humerus. It’s the main driver of arm adduction and internal rotation, heavily used in every horizontal pushing movement such as the bench press.

Why does this muscle get injured?

A pectoralis major strain most often occurs during a maximal eccentric pushing effort, typically the lowering phase of a too-heavy bench press, or during a pushing movement performed while fatigued or with poor technique. The area most commonly affected is the junction between the muscle and its tendon, near the humeral attachment.

Pectoralis major area in the HOPP app
Physio insight: several grades of muscle strain are distinguished, from a simple strain (grade 1) to a partial tear (grade 2) or even a complete rupture (grade 3, which may require surgery). A pectoralis major strain most often affects weight trainers during the bench press.

Which sports contribute to pectoralis major muscle strains?

Any sport that heavily demands horizontal pushing of the arm exposes this muscle:

  • Weight training, particularly heavy bench press
  • Rugby, during scrum pushing phases
  • Combat sports (judo, wrestling)
  • CrossFit with intense pushing movements
  • Arm wrestling
  • Gymnastics on rings
Physio tip: test your pain by adducting your arm against light resistance (elbow tucked against the body, pushing inward): if the pain is clear-cut at the front of the chest or arm, that’s a good indicator of a pectoralis major strain. Bruising appearing over the following days often confirms a more significant injury.

Treating a pectoralis major muscle strain in rehab with a sports physio

The goal of treatment is to allow the muscle to heal under good conditions, then progressively restore its strength to prevent any recurrence.

  1. 1Protection and relative rest of the area
  2. 2Gentle shoulder mobility
  3. 3Light isometric contractions
  4. 4Progressive concentric strengthening
  5. 5Eccentric strengthening
  6. 6Upper-limb chain work
  7. 7Reintroducing sport-specific movements
  8. 8Strengthening under sport-specific load
  9. 9Progressive return to your sport
  10. 10Return to competition

Why the physio’s initial assessment matters

During the initial assessment, the physiotherapist aims to identify the precise mechanism of injury (load lifted, pushing movement, arm position), the intensity of the pain felt at the time, and any bruising or visible deformity that would point to a higher grade.

“A poorly managed muscle injury is the best way to get hurt twice in the same place.”

Progressive strengthening, the cornerstone of treatment

Strengthening pectoralis major must be introduced progressively, starting with pain-free isometric contractions before moving to concentric then eccentric work, with a very gradual reintroduction of heavy pushing movements.

In brief

  • Isometric then progressive concentric strengthening
  • Eccentric strengthening to prevent recurrence
  • Associated shoulder mobility
  • Gradual return: mobility, then load, then sport
Guided mobility exercise in the HOPP app

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Should you rest or keep playing sport?

Prolonged total rest isn’t recommended: it causes loss of muscle mass and strength, which increases the risk of recurrence. It’s better to temporarily adapt your activity, avoiding the pushing movements that clearly reproduce the pain, while quickly starting active, progressive rehab.

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When should you see a specialist for a pectoralis major strain?

If you feel sudden pain accompanied by a “pop”, visible deformity of the muscle, or significant bruising, prompt medical attention is needed to rule out a complete rupture, which can sometimes require surgery, especially in strength athletes.

The HOPP care programmes to treat your pectoralis major strain and get back to sport

To heal durably, this muscle strain requires a progressive, well-dosed return to pushing load. HOPP offers you a precise exercise programme, allowing you to get back to your activities as quickly as possible.

Gentle stretches for pectoralis major and the front of the shoulder capsule, introduced progressively once the acute phase has passed.
Shoulder mobility work to prevent any associated stiffness during healing.
Progressive strengthening of pectoralis major, from isometric to eccentric.
A progressive, guided return to pushing loads, so as not to load the muscle again too quickly.

The programme runs from 3 to 9 weeks depending on the injury and ends with a reconditioning phase allowing a return to competition in the best possible conditions. Each programme is designed by the HOPP team, made up of two sports physiotherapists who are experts in assessing and treating athletes. You’ll also find theoretical content throughout your progression, so you master every aspect of your recovery and can adjust your treatment independently. If needed, our team of physiotherapists is on hand to support you.

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  • 100% of the treatment programme
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  • Flexibility / Mobility
  • Strengthening
  • Proprioception
  • Progress tracking
  • Return-to-running programme
  • Theoretical content included
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  • Daily personalisation
  • Flexibility / Mobility, Strengthening, Proprioception
  • Progress tracking
  • Return-to-running programme
  • Theoretical content included
  • + 4-week return-to-play plan with 6 difficulty levels
  • + 2 video calls with an expert sports physio / return check-up
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A programme that adapts to you every day

Every day, how you feel (RPE) is factored in to automatically adjust the rest of your programme: more load if all is well, a bit less if your chest or arm is complaining. This daily personalisation is what makes the difference compared to a fixed, paper-based programme.

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Post-effort RPE questionnaire in the HOPP app

F.A.Q

Does the HOPP programme replace a medical consultation?

No. HOPP is a support and rehab tool designed by sports physiotherapists, but it doesn’t replace a doctor’s opinion. If in doubt, or if the pain persists, see a health professional.

Is the programme suited to all sporting levels?

Yes. Every programme is personalised to your sport, your level and how you feel each day, whether you’re a recreational athlete or preparing for competition.

How long does it take to recover from a pectoralis major strain?

It depends on the grade of the injury: a simple strain can resolve in one to two weeks, while a partial tear generally requires four to six weeks of progressive rehab.

Can I keep training with this injury?

It’s better to avoid pushing movements that directly stress pectoralis major during the acute phase, but you can generally work other muscle groups that don’t involve it.

Is the bench press dangerous for pectoralis major?

The bench press isn’t inherently dangerous, but too heavy a load, insufficient warm-up, or poor technique while fatigued significantly increase the risk of injury.

Thibault Vignais, sports physio

Written by Thibault Vignais

Sports physio and osteopath, HOPP co-founder

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