Sport Performance and Injury Prevention/ Return to Sport Specialist


Unlock Your Child’s Athletic Confidence

Helping Youth Athletes Across Sports Gain CONFIDENCE, SPEED, STRENGTH,  and Prevent Injuries

John has 25+ years experience with both amateur and pro athletes has developed the optimal experience for countering the challenges with today’s athletes.

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Is Your Child’s Athletic Future at Risk?

Today's parents need to negotiate the challenges of watching their child keep up with the Joneses. Kids are pressured into specializing early in a single sport and competing year round. This over indulgence in sport specificity can lead to repetitive stress injuries, decreased performance and burn out.  This cycle robs kids of their joy and confidence. When this happens, most quit the sport.  John’s optimal performance system (ATHLETIC CONFIDENCE) will ensure your child becomes more athletic, preventing injuries, facilitating effective post injury recovery and fostering joy and confidence that will transcend sport and life. 

Get our free web series:  5 things every parents should know about their child's athletic development

Meet John Sinclair
Your Partner in Youth Athletic Development

I’m John, a youth athletic coach with over 25 years of experience helping young athletes become more athletic, injury-free, and successful across multiple sports.


As a former multi-sport athlete and Certified Strength and Conditioning Specialist, I’ve witnessed firsthand how early specialization can derail a young athlete’s potential. I specialize in building resilient, well-rounded athletes by delivering training and coaching that not only maximizes performance but also safeguards their long-term health and success.


Athlete Stories

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Natalie Block

Harvard: Tennis
Natalie started training with John at 12 years old. By the time she was a senior in high school she was a blue chip prospect in tennis.
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Luigi Landi

High School: Soccer

Luigi suffered through multiple injuries due to his rapid growth and after training with John has had his first full injury free season.
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Hayley Farmer

Florida State University

Hayley won state championship in high school lacrosse.  Following in John's footsteps is studying exercise science and wants to become a physical therapist
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Delanie Leclerc

High School Soccer/Belmont University

Delanie successfully recovered from two ACL surgeries and one reconstructed ankle surgery with John as her coach and recovery specialist.
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Gunnar Schwarz

United States Naval Academy: Lacrosse

Gunnar started with John after ACL reconstruction surgery at age 14. After 5 years of training with John he was the #1 recruited goalie in the United States. 
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Marie Sadouni

National Belgian Judo team

Marie came to John to rehab a few injuries.  She has since retired from Judo and, following in John's footsteps, is now a physical therapist.

Our Multisport Training Approach: The Key to Injury-Free Athletic Growth and Development

Our 3-Step Framework

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1. Assessment & Personalized Plan
2. Balanced Training Approach
Evaluate your child’s movement skills, strengths, and sport-specific needs.
Develop foundational athletic skills that apply to all sports around strength, speed, mobility and recovery.
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3. Ongoing Support & Injury Prevention
Continuous guidance and monitoring to ensure long-term athletic health and performance. 

Virtual Training, Nutrition Coaching and Strength & Conditioning Programming


What are parents and clients saying?

Here’s How to Get Started

Schedule a Free Consultation
Let’s discuss your child’s athletic goals, abilities and challenges.

Receive a Personalized Training Plan
Based on their current needs and future aspirations.

Personal Coaching Sessions to Watch Them Thrive 
See your child become a confident, resilient, and injury-free athlete.
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