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Rehabilitation Without Regression

Following recurrent calf injuries, the priority was to restore tissue capacity without reducing sprint performance.

Profiling identified a 31% strength deficit, alongside a mismatch between force production and tissue capacity. The injured limb was absorbing increased load during acceleration, driving repeated breakdown.

Working in full collaboration with Manchester City, we aligned physical capacity with sprint demands: progressively restoring strength while maintaining and advancing sprint exposure, guided by continuous data monitoring.

The outcome was a return to high-speed sprinting without symptoms, reduced deficit, and improved robustness, all without compromising performance output.

This approach demonstrates that rehabilitation can be achieved without regression when root causes are addressed and exposure is maintained.

Client
Kalvin Phillips
SERVICE
Rehabilitation and off-season support during 2024 and 2025, delivered in collaboration with Manchester City medical and performance staff.
Duration
Premier League off-seasons, 2024 and 2025.

31%

calf strength deficit significantly reduced

0

symptoms on return to high-speed sprinting

2

successive off-seasons completed in full collaboration with Manchester City

The Challenge

Across multiple seasons, the athlete experienced recurring calf injuries. Initial 292 profiling identified a clear issue:

  • 31% calf strength deficit

Deeper AI biomechanical analysis revealed that, despite this deficit, the athlete was still producing high sprint and acceleration forces.

AI-supported running analysis showed the injured leg was working harder during acceleration, increasing stress on the calf and driving repeated breakdowns of the muscle.

It was a mismatch between force production and tissue capacity.

What 292 Delivered

Full clinical and performance handover from Manchester City, ensuring complete alignment from day one.

The focus: align physical capacity with the demands of sprinting.

  • Strength deficits targeted and progressively reduced
  • Sprint exposure maintained and progressed throughout
  • Running loads and GPS data monitored and shared daily
  • Decisions driven by performance data, not return timelines

AI technology was used to analyse sprint mechanics and guide intervention at every stage.

An integrated performance team delivered the programme:

  • Programme Performance Director – strategic oversight
  • Lead Physical Performance Coach – daily delivery and progression
  • Data Analyst – monitoring load, trends, and outputs
  • Speed Specialist – sprint mechanics and high-speed exposure
  • Physiotherapist – clinical oversight and return-to-play alignment

Collaboration and communication: this was a fully integrated process with Manchester City throughout the Premier League off-season during 2024 and 2025.

  • Full handover completed at programme start
  • Daily communication with club medical and performance staff
  • Training loads, GPS data, and progress shared in real time
  • Comprehensive end-of-programme report delivered, detailing outputs and readiness

Trusted by Manchester City to deliver and communicate at Premier League level.

Outcomes

  • 31% calf strength deficit was significantly reduced
  • Return to high-speed sprinting without symptoms
  • Improved reactive strength and contact mechanics
  • Mechanical overload issue resolved

What the data shows:

  • Root cause identified, not just symptoms managed
  • Sprint performance was maintained throughout rehabilitation
  • Athlete returned with improved robustness, not just recovery

Better running mechanics, stronger tissues. All in collaboration with Manchester City.

Enquire now to Learn more about how 292 help athletes

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