When you move, your body does not work as a collection of isolated parts. Walking, running, lifting, jumping, and even breathing require multiple regions of the body to coordinate with one another.
This is especially important when looking at athletic movement. A restriction in one area can change how another part of the body moves, which is why assessing the entire movement system can provide more useful information than focusing only on the location where someone feels tightness or discomfort.
One important connection to understand is the relationship between the neck, spine, pelvis, sacrum, and lumbar region.
The Neck: More Than Just Supporting the Head
The neck, or cervical spine, consists of seven vertebrae that support the head while allowing it to move in multiple directions.
The cervical region also has an important relationship with the nervous system, muscles, balance, posture, and coordination. Because of these connections, changes in head or neck position can influence how the body organizes movement.
For an athlete, this matters because efficient movement requires the head, trunk, and limbs to work together. For example, when an athlete turns their head while running or changing direction, the rest of the body has to adapt to maintain balance and coordination.
This is one reason why a movement assessment may include the neck even when the primary concern involves the legs or lower back.
The Spine Creates the Foundation for Movement
Below the cervical spine is the thoracic spine, which contains 12 vertebrae and connects with the ribs.
The thoracic region plays an important role in posture, trunk rotation, breathing mechanics, and movement of the upper body. The thoracic spine also provides a connection between the upper and lower portions of the body.
When you walk, run, rotate, or change direction, movement through the thoracic region contributes to the overall movement pattern.
The spine continues into the lumbar region, creating a coordinated structure that connects the upper body with the pelvis.
The Lumbar Region Handles Significant Loads
The lumbar spine consists of five vertebrae and is located in the lower portion of the back.
Because it supports and transfers significant loads between the upper body and pelvis, the lumbar region plays an important role in bending, extending, rotating, walking, and athletic movement.
The lumbar spine does not operate independently. Its movement is influenced by the thoracic spine above it and the pelvis below it. This means that assessing lumbar movement in isolation may not provide the complete picture.
The Pelvis Connects the Spine to the Legs
The pelvis serves as a major transition point between the spine and lower extremities.
It provides a stable base for the spine while also transferring forces between the upper and lower body. Every time you walk, run, jump, or land, forces travel through this region.
The position and movement of the pelvis can therefore influence how the hips and legs move. At the same time, movement from the legs can affect the position and mechanics of the pelvis.
This creates a continuous relationship between the spine, pelvis, and lower extremities.
The Sacrum Acts as an Important Link
The sacrum is a triangular bone located at the base of the spine between the two sides of the pelvis.
It connects the lumbar spine with the pelvis and plays an important role in transferring loads through the lumbopelvic region.
Because the sacrum sits at this transition point, it is part of the mechanical connection between the spine and lower body.
When assessing movement, understanding this region can help provide a more complete picture of how forces are transferred through the body.
Why These Regions Should Be Viewed as a System
Consider the movement sequence from the neck through the spine, lumbar region, sacrum, pelvis, and lower extremities.
These structures are mechanically and neurologically interconnected. A change in movement at one level may influence movement elsewhere as the body attempts to maintain balance, stability, and efficiency.
This does not necessarily mean that a problem in the neck is the cause of someone’s hip or leg symptoms. Human movement is much more complex than a simple one-to-one relationship.
Instead, the important lesson is that movement should be evaluated as a whole system.
Why This Matters for Athletes
Athletes place particularly high demands on their bodies. A soccer player, for example, needs to repeatedly accelerate, decelerate, rotate, change direction, kick, jump, and maintain balance.
These movements require coordination between the head, spine, pelvis, hips, and legs.
A movement assessment can help identify differences in range of motion, mobility, stability, coordination, balance, postural control, movement patterns, and muscle activation.
Once a movement difference is identified, reassessing the movement afterward can help determine whether the intervention actually changed the way the person moves.
Assess, Then Reassess
One of the most valuable principles in movement care is simple: don’t just assess, reassess.
If an athlete demonstrates a noticeable difference between the two sides, the next step is to determine whether that difference changes after an intervention.
For example, an athlete may demonstrate different leg mobility when the head is positioned in different directions. After addressing an area of restriction, the same movement can be tested again.
This provides an objective way to observe whether something actually changed.
The goal isn’t simply to perform an adjustment or treatment. The goal is to understand how the person’s movement responds.
The Bigger Picture
The human body is an interconnected system.
The neck influences head and trunk positioning. The thoracic spine contributes to posture and rotation. The lumbar region helps transfer loads. The sacrum connects the spine with the pelvis. The pelvis provides a foundation for movement of the lower extremities.
Together, these regions help create coordinated movement.
For athletes especially, looking at the entire movement chain can reveal information that may be missed when focusing exclusively on the area that feels tight or restricted.
The best movement assessment isn’t always about finding the one “problem area.” It’s about understanding how the entire system is working together.
Medical Disclaimer
This article is provided for educational and informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. Individual movement patterns and treatment responses vary. If you are experiencing pain, injury, weakness, numbness, or other concerning symptoms, consult an appropriately qualified healthcare professional for an individualized evaluation.