I work with athletes and high-performers who are navigating injury, rebuilding capacity, and returning to sport.

The ones who are:

  • Out of pain… but not performing

  • Cleared… but not confident

  • Training… but still compensating

Because the biggest gap isn’t rehab.
It’s what comes after.

  • Strength and conditioning coach + Rehab Specialist

  • My work sits between rehab and performance.

    • Strength & conditioning

    • Movement variability + control

    • Tissue capacity + tendon loading

    • Nervous system + pain perception

    • Return-to-sport progression

    Not as separate pieces — but as one system.

    Because athletes don’t need isolated fixes.
    They need integration.

I’m Sophie Bartels, founder of Bartels Fitness and creator of the PREFORM App.

I grew up playing volleyball, swimming, and running track — constantly chasing performance, but never taught how to recover or rebuild properly. Years of overtraining, surgeries, and pain shaped my journey into what I now coach today: bridging the gap between prehab and performance.

After years in the strength and conditioning field, I realized that most former athletes don’t need more intensity — they need structure, support, and a coach who understands pain, plateaus, and the drive to move like an athlete again.

My mission is to help you:

  • Relearn how to move without fear

  • Build strength that lasts beyond the gym

  • Integrate performance with longevity

  • Reconnect to the hobbies and adventures that make you feel alive

I believe training is more than reps — it’s rebuilding confidence, athleticism, and identity through movement.

Get Started Here!

Athleticism & Performance.

Mobility & Prehab.

Understanding Pain.

Courage to Try New Things.

Athleticism & Performance. Mobility & Prehab. Understanding Pain. Courage to Try New Things.

INTERESTED IN 1:1 COACHING?

Share your personal training goals, any questions you have, or anything you’d like to learn more about—we’ll be in touch soon to chat next steps.