Structural integration for runners
Hip flexors, hamstrings, the whole back line
Hip flexors that feel locked the moment a tempo run starts. Hamstrings that have been off for months. IT band and calf tightness that no amount of foam rolling fixes. A fascial chain that foam rolling cannot reach. That is the work.
The off-season window
Between training blocks. Post-marathon, post-half, post-spring season. Your body finally has the bandwidth for structural change instead of maintenance. Twelve sessions, eight to twelve weeks, then you build mileage into the next race on a reorganized structure.
What is actually restricting you
Two patterns show up in nearly every road runner I assess:
- Locked back line. Plantar fascia, calf, hamstring, and back are one continuous line. Thousands of miles tighten the whole chain. When one segment calls for help, the whole line is usually short.
- Hip flexor and deep front line. The psoas works hard on every stride but rarely gets through full extension. Over time the deep front line shortens. The pelvis tips forward. The hamstrings get pulled into chronic length and start to grip.
Foam rolling reaches the surface. Structural integration reorganizes the chain.
The 12-session ATSI series
The series is a project, not a subscription. Twelve sessions, structured in three phases:
- Sessions 1 to 4 (Sleeve). Open the superficial layers. Free the back line and the lateral line. By session four most runners notice the calves stop feeling like cables.
- Sessions 5 to 8 (Core). Work into the deep front line, the psoas, the diaphragm. This is where the hip flexor pattern actually unwinds.
- Sessions 9 to 12 (Integration). Refine gait and pelvic position. Lock the new organization in for the next training block.
Full program detail lives on the 12-Session Series page.
Where this fits in your recovery stack
- Massage releases tension locally. Useful after long runs.
- PT rehabs a specific injury. Useful when something is acutely wrong.
- Chiropractic adjusts joints. Useful for joint-by-joint complaints.
- ATSI reorganizes the fascial system so your body needs the others less often.
It is not better. It is different. Most serious runners use all four.
Credentials
- ATSI-certified, 750+ hours of training
- Anatomy Trains teacher-in-training under Tom Myers
- Santa Cruz studio. Mobile sessions throughout the Bay Area.
- Working with runners, cyclists, triathletes, and trail athletes since 2015
Book a free 30-minute movement assessment
I will watch you move, ask the questions that matter, and tell you honestly whether the 12-session series makes sense for what you are after. No pitch.
Questions, answered
My hip flexor is constantly tight no matter how much I stretch. Why?
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Hip flexor tightness in runners is rarely a single muscle. The deep front line runs from the inside of the foot, through the inner leg, into the psoas, up to the diaphragm. When that whole line shortens, the hip flexor is just the loudest signal. Releasing the line, not stretching the muscle, is what makes the tightness stop coming back.
My hamstring has been off for months. Is that fixable?
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Almost always. Chronic hamstring tightness is usually a posterior chain pattern plus a downstream-of-the-pelvis problem. The pelvis tilts forward, the hamstrings get pulled into chronic length, then they grip to protect themselves. Resolve the pelvic position and the hamstring stops doing the work it should not have to do.
Half marathon in three months. Should I do this before or after?
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Before, if you can. Eight to twelve weeks for the series, then six to eight weeks to build into race shape on a reorganized structure. That is how most road runners I work with get the most out of it.
I run by feel. Will this work make me overthink my stride?
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No. The work changes how your body is organized. It does not require you to think about it while running. Most runners report the stride feels easier, not more analyzed.
Can I run during the series?
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Yes. Most road runners run through the work. We time deeper sessions away from long runs and hard intervals.