Upper Back Pain? Explore the Muscles That May Be Involved
Upper back discomfort, stiffness and restricted movement can involve several different muscles depending on where you feel it, what movements aggravate it and how it began.
JSM Reset helps you explore the muscles that may be contributing to your symptoms and guides you through targeted self-resisted stretching and mobility.
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Why Does My Upper Back Feel Tight or Sore?
Upper back discomfort may be influenced by muscle tension, posture, repetitive activity, prolonged positions, and movement demands. The way you use your upper back throughout the day — at a desk, looking at a phone, driving, or during physical work — can all play a role.
Different muscles in the upper back can become tight or restricted for different reasons, and the location and quality of the discomfort you feel can vary. This is why understanding which muscles may be involved can help you explore more targeted self-care.
Upper back pain can have many causes, including spinal, joint or nerve involvement that is not muscular. Persistent, severe, unexplained or concerning symptoms should be assessed by an appropriate healthcare professional.
JSM Reset is an educational wellness and mobility app. It does not diagnose medical conditions and is not a substitute for professional medical advice, diagnosis, or treatment.
Muscles Commonly Involved in Upper Back Movement and Tension
The following muscles contribute to upper back movement and are often associated with tightness or restricted movement. Each card links to the relevant JSM Reset content where an approved self-resisted stretch exists.
Middle Trapezius
- Location
- Across the middle of the upper back, between the shoulder blades.
- Movements & Functions
- Pulls the shoulder blades together and stabilizes them.
- How Tension May Feel
- May feel like tightness or aching across the mid-back between the shoulders.
Lower Trapezius
- Location
- Lower part of the upper back, running from the shoulder blade down the spine.
- Movements & Functions
- Helps lower the shoulder blades and stabilize them during arm movement.
- How Tension May Feel
- May feel like tightness or aching in the lower mid-back near the shoulder blade.
Rhomboid Major
- Location
- Between the shoulder blade and the spine, middle back.
- Movements & Functions
- Pulls the shoulder blade toward the spine and helps stabilize it.
- How Tension May Feel
- May feel like aching or tightness between the shoulder blade and the spine.
Rhomboid Minor
- Location
- Above the rhomboid major, between the top of the shoulder blade and the spine.
- Movements & Functions
- Works with the rhomboid major to pull the shoulder blade toward the spine.
- How Tension May Feel
- May feel like tightness at the top of the inner shoulder blade area.
Serratus Anterior
- Location
- Side of the rib cage, wrapping around beneath the shoulder blade.
- Movements & Functions
- Helps move the shoulder blade forward and upward, and stabilizes it during arm movement.
- How Tension May Feel
- May feel like tightness along the side of the rib cage or beneath the shoulder blade.
Latissimus Dorsi
- Location
- Large muscle across the middle and lower back, running from the upper arm to the lower spine.
- Movements & Functions
- Helps pull the arm down and back, and stabilizes the trunk.
- How Tension May Feel
- May feel like tightness across the mid-back or beneath the arm, especially with reaching or pulling.
Thoracic Erector Spinae
- Location
- Either side of the spine in the upper and mid-back.
- Movements & Functions
- Helps extend the spine backward and maintain upright posture.
- How Tension May Feel
- May feel like tightness or aching along the spine in the mid-back, especially after prolonged sitting or standing.
Where Do You Feel Upper Back Discomfort?
Discomfort can show up in different areas. Some common examples include:
- Between the shoulder blades
- Along the spine in the mid-back
- Between the shoulder blade and spine
- Across the upper back
- Pain when twisting the torso
- Pain after prolonged sitting
Location alone does not identify a single muscle, which is why JSM Reset combines symptom location with movement questions to help narrow down the muscles that may be involved.
How JSM Reset Find My Pain Works
Tell us where you feel it
Point to the area on the 3D body where you feel discomfort or tension.
Answer questions about your symptoms and movement
Share details about the sensation, how long you have felt it, and what movements affect it.
See possible muscles highlighted on the 3D body
JSM Reset shows the muscles that may be involved based on your answers.
Explore appropriate JSM Reset self-resisted stretches
Open the recommended stretches for the muscles identified and follow the guided instructions.
JSM Reset does not provide a medical diagnosis. Recommendations are based on JSM Reset's therapist-created clinical movement framework and are intended for educational and self-care purposes.
What Is a Self-Resisted Stretch?
A JSM Reset self-resisted stretch combines a gentle muscular contraction with controlled movement or stretching. Your own body provides the resistance, so no special equipment is required.
Users should stay within comfortable ranges and stop if movement produces concerning symptoms.
Self-resisted stretching is an educational self-care technique. It is not a treatment or cure for any medical condition.
Try the Upper Back Reset
If you already know you want to work on upper back mobility, you can go directly to the Shoulder & Upper Back Reset program and explore the guided self-resisted stretches for the muscles above.
Not Sure Which Muscle?
Start with Find My Pain. Answer a few questions about where you feel discomfort and which movements affect it, and JSM Reset will show the muscles that may be involved on the 3D body.
JSM Reset is an educational wellness and mobility app. It is not a substitute for professional medical advice, diagnosis, or treatment. If you have persistent, severe, or concerning symptoms, please consult an appropriate healthcare professional.
Created and clinically directed by Cara Jenner
JSM Reset is an educational wellness resource based on the Jenner Structural Method™ and years of hands-on therapeutic experience.
For general education and wellness only. Not medical advice, diagnosis, or treatment.
© 2026 JSM Reset / Jenner Structural Method™. All rights reserved.