From the Road Runners Club of America certified coach directory, the USATF coach network, and physical therapy clinics that explicitly offer gait analysis. The roster JSON merges these sources and groups providers by city for directory builds.

2D video captures kinematics like joint angles and stride patterns. Force-plate analysis captures kinetics like ground reaction forces and asymmetries. Force-plate data is clinical-grade. 2D video is informational. Pressure mat falls in between for utility.

No. Running store gait checks are sales-driven informal screens, not structured analysis. The directory focuses on clinics with documented analysis protocols, certified running coaches, or physical therapists who specialize in running biomechanics.

Each row supports a ptIntegrated count that captures providers with a licensed physical therapist on staff who folds gait analysis into rehab plans. Clinics with PT integration are flagged in the template for athletes returning from injury.

Each city still gets a page. The template emphasizes the individual provider profile when the count is low. Sparse cities still rank for local intent because the equipment and credential signals are consistent with what visitors actually search.

Each provider row captures their primary analysis equipment, plus secondary equipment when present. The template surfaces the top equipment for each city as a headline, with full equipment lists in a sidebar for athletes who care about specific tools.

Yes. Each row supports a research field that links to relevant biomechanics studies for the city's leading providers. The template renders that as a sidebar block, which signals depth and engagement with the broader research literature.

RRCA and USATF publish credential updates annually. Clinic equipment changes are sourced from provider self-reporting plus periodic audit. After each refresh, you update affected city rows and trigger a rebuild for the affected pages only.