Small Group Performance Training: Girls and Boys Middle and High School

MS Boys Post

System 81 Performance is an invite-only program that combines:

  • Structured strength and conditioning
  • Speed, agility, and injury prevention
  • Stick work and skill development
  • A disciplined, high-accountability training environment

This is not a large-group or generalized training model. Each session is intentional, coached, and built around long-term athlete development CAPPED AT 6 PER GROUP.  

SYSTEM 81 PERFORMANCE:  Athletic DevelopmentBuilt for middle school athletes who want to separate themselves.  Led by Kyle Hartzell — 16-year professional lacrosse veteran, 3x Team USA member, and Gold Medalist — these sessions are designed to help middle school athletes develop strength, speed, explosiveness, mobility, confidence, and proper movement mechanics in a competitive, high-energy environment.  Training focuses on:Strength DevelopmentSpeed & AgilityExplosive PowerInjury PreventionMovement QualityConditioningConfidence & Discipline

WHY SMALL GROUP TRAINING? Small group training allows for:

  • Individualized Coaching & Attention
  • Proper Technique & Movement Development
  • Increased Accountability & Competitive Energy
  • Strength, Speed, Power & Athletic Performance Training
  • Injury Prevention & Long-Term Athletic Development
  • Confidence Building Through Consistent Training

This is not a generic workout class. These sessions are built to help athletes develop the strength, discipline, movement quality, and confidence needed to perform at a higher level in sport and in competition.

Begins June 8 & 9. Invitation-Only

Details by group:

After a 16-year professional lacrosse career, I’m opening a new training facility designed specifically for athletes who are serious about improving — not just participating.

One of the biggest separators at the high school, college, and professional levels is strength and conditioning.  Over the course of my 20-year career in lacrosse, one of the biggest reasons I was able to compete at the highest level — and separate myself within the sport — was my commitment to the weight room.

It’s not just about getting stronger — it’s about:

  • Moving more efficiently
  • Developing speed and explosiveness
  • Building durability and reducing injury risk
  • Having the physical confidence to compete

Too often, athletes rely only on practice and games for development. The athletes who separate are the ones who train with structure and intent outside of those environments.

-Kyle Hartzell, Owner, System 81