Blog 4: Lower Back Pain in Athletes
Part 4: Movement and Mechanics: How the Way You Move Is Loading Your Spine
Welcome back to Lower Back Pain in Athletes. Part 1 covered the types and causes of athletic lower back pain. Part 2 addressed the three biggest upstream and downstream drivers, glutes, hip mobility, and thoracic stiffness. Part 3 unpacked what the core actually is and why most athletes are training it wrong. Part 4 is where it all becomes visible, the movement and mechanics patterns that load the lumbar spine and drive the injuries we have been discussing.
You can have strong glutes, mobile hips, a capable thoracic spine, and a well-trained core, and still develop lower back pain if the way you move puts repeated asymmetrical or excessive load through the lumbar segments. Movement quality is where all of the physical preparation either comes together or falls apart.
What Poor Movement Mechanics Actually Looks Like
Movement faults in athletes with lower back pain are rarely dramatic. They are subtle, repetitive, and invisible to the athlete because they have been that way for years and feel completely normal. A few common patterns:
Lumbar hinging instead of hip hinging — the most universal mechanics error I see. When picking something up, bending forward, or setting up for a deadlift or a golf address, athletes who hinge through the lumbar spine rather than the hip joint load the posterior disc and facet joints with every repetition. A proper hip hinge keeps the lumbar spine neutral while the hip joint does the work of bending. Most athletes have never been taught this distinction.
Anterior pelvic tilt under load — when the pelvis tips forward during running, squatting, or lifting, the lumbar spine is pulled into extension and the facet joints and posterior elements are compressed. This is almost always a combination of tight hip flexors and inhibited glutes, and it becomes more pronounced as fatigue accumulates across a long session.
Collapsing into lumbar flexion under fatigue — the opposite of anterior tilt. As the core fatigues late in a run, a long bike ride, or a heavy training session, athletes lose the ability to maintain neutral lumbar position and the spine rounds into flexion under load. This is a significant disc injury mechanism.
Lateral trunk shift during single-leg loading — visible as a drop or shift of the trunk toward the stance leg during running, skating, or any single-leg exercise. This is Trendelenburg pattern; glute medius weakness expressed as lumbar lateral flexion under single-leg load. Every running stride with this pattern is a small lateral compression load through the lumbar spine.
Sport-Specific Mechanics That Drive Lower Back Pain
Each sport creates its own characteristic lumbar loading pattern:
Running:
The combination of anterior pelvic tilt, reduced hip extension, and lateral trunk shift under fatigue creates a lower back loading pattern that accumulates across kilometres. Most running-related lower back pain is a late-session fatigue phenomenon that becomes a structural problem when the training load is high enough.
Cycling:
Sustained hip flexion on the bike creates a progressively kyphotic lumbar posture, particularly as fatigue accumulates. The transition from bike to run in triathlon is particularly high-risk because the lumbar spine has been in a sustained flexed position for hours and is then asked to extend and absorb impact load immediately.
Golf:
The golf swing requires significant thoracic rotation. When that rotation is not available, the swing happens through the lumbar spine instead. The combination of compressive load at address and rotational shear through impact, repeated across hundreds of swings, is among the most demanding mechanical exposures the lumbar spine faces in any sport.
Hockey:
The skating stride requires sustained hip flexion combined with explosive hip extension and rotation. When the hip flexors are tight and the glutes are inhibited, the lumbar spine compensates through every stride. Combined with the board contact and collision forces of the game, this creates a high cumulative load environment for the lower back.
Strength training:
The most common mechanics error in the gym is spinal loading during movements that should be hip-dominant. Squats and deadlifts performed with a rounded lower back, good mornings drifting into lumbar flexion, and overhead pressing with excessive lumbar extension are all reliable injury mechanisms when performed with high load and volume.
The Hip Hinge: The Most Important Movement Pattern for Lower Back Health
If there is one movement pattern I could teach every athlete with lower back pain, it is the hip hinge. The hip hinge is the movement of bending forward through the hip joint while maintaining a neutral lumbar spine. It is the foundational pattern behind deadlifts, Romanian deadlifts, good mornings, and the address position in golf. And it is the movement pattern that most directly protects the lumbar spine from the flexion loading that drives disc injury.
Teaching a proper hip hinge involves:
Learning to feel the difference between hip movement and lumbar movement — most athletes have lost this proprioceptive distinction entirely
Maintaining a neutral lumbar curve throughout the range of motion — not flat, not arched, but the natural curve under active control
Driving the movement by pushing the hips back rather than bending forward — the cue that most reliably produces the pattern
Bracing the core before and throughout the movement — creating intra-abdominal pressure that protects the lumbar spine under the load of the hinge
Up Next: Building a Back That Lasts
You understand the types of lower back pain, the upstream and downstream drivers, the core system that protects it, and the movement patterns that load it. Part 5 of Lower Back Pain in Athletes brings it all together into a practical prevention and performance plan; what to train, how to move, and how to build a lower back that holds up through a lifetime of sport. See you in the final part.
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Movement mechanics are the piece that most athletes cannot assess themselves. If you want to know what your movement patterns are doing to your lower back under load, a clinical assessment at Endurance Therapeutics gives you that picture. Reach out to Dr. Keirstyn to book yours.
📍 Endurance Therapeutics | Oakville, Ontario
📞 905-288-7161