GRGL

GRGL

GET RIGHT OR GET LEFT

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Performance Sports Science & Research Lab

Advancing Human Performance Through Data Sports Science

GRGL applies cutting edge sports technology, biomechanical analysis, data sports science, and sports physiology to unlock the full potential of athletes youth to pro.

1,000+

Athletes Analyzed

12+

Sports Covered

98%

Improvement Rate

Sports Performance Vision
GRGL logo

Our Partners

Our Mission

To discern the physiological limitations of performance and measurably elevate athletic potential

At the heart of GRGL is the pursuit of scientific research that bridges the gap between high-level sports science and athletic development.

GRGL mission visual

The GRGL Difference

Unlike traditional coaching, we educate athletes on the reasoning behind every exercise: the what, why, when, and how of training.

Our Athletes

Alumni Spotlight

Athlete outcomes and development stories from the GRGL training process.

All Athletes

Athlete Reviews

What Our Members Say

Leave a review
Tanner Niizawa review photo
Tanner Niizawa
★★★★★

“The work with Coach AJ has been tremendous! I mostly appreciate his precision on proper recovery and injury prevention. His approach to training is not one dimensional and the use of different devices to triangulate data give an undeniable measure of the athletes true outputs. He also brings a wealth of knowledge navigating the recruitment process and finding the right fit if pursuing athletics in college and beyond is a goal. We have been training with Coach AJ for 3 years.”

D
Daymond Patterson II
★★★★★

“Coach AJ is top-of-the-line when it comes to not only training but mentorship!!! The way he approaches his training to meet every athletes needs is very rare nowadays. If you’re looking for somebody to take your kids to the next level, this is your guy.”

K
Kobey Kissee-Mauga
★★★★★

“The GRGL program helped build me up to have a strong foundation for speed building, strength, and stamina. The leap in skill progression I felt from my 12u to 14u of pop warner was unbelievable and every movement Coach AJ has had me work has translated over to the field. This is truly an amazing program.”

Nick "Keys" Olivier review photo
Nick "Keys" Olivier
★★★★★

“I connected with Coach AJ nine years ago, during my freshman year at Nassau CC, and has continued to guide and motivate me ever since. He has always challenged me to be intentional, disciplined, and committed to becoming the best version of myself, both on and off the field. We still stay in regular contact, which speaks volumes about the kind of mentor he is. I highly recommend him to any parent looking for someone who will invest in their child’s athletic development, character, & future.”

G
Giselle Vilchis
★★★★★

“Our daughter has trained with GRGL for 8 months now and has seen tremendous growth both physically and mentally. What drew us most to this program is that Coach AJ creates a program with intention to meet each athlete’s goal. We also appreciate the data available to track her development.”

Christian Payne review photo
Christian Payne
★★★★★

“Get Right or Get Left Training has been an outstanding experience, both on and off the football field! What truly sets this program apart is the mentorship, personalized guidance, and genuine commitment to helping young athletes like myself succeed. Through virtual training and mentoring sessions, I continues to gain valuable knowledge about the game, improve football IQ, develop confidence, and better understand what it takes to play on the next level.”

Our Methodology

Scientific Process for Athletic Development

A systematic, data-driven approach that transforms raw athletic potential into measurable, sustainable performance improvements.

01

Comprehensive Evaluation

Multi-dimensional assessment measuring stability, mobility, flexibility, range of motion, speed, reactivity, power, and explosiveness.

02

Data Analysis & Profiling

Deep analysis of performance data to identify strengths and weaknesses. Personalized athlete profiles with historical tracking.

03

Evidence-Based Programming

Training protocols designed to close performance gaps, prevent asymmetries, and build transferable sport capabilities and capacities.

04

Continuous Monitoring

Ongoing player load monitoring and progress checks with regular report cards for athletes and parents.

Partners

Performance & Technology Partners

GRGL collaborates with leading technology and performance organizations to support athlete evaluation, development, and measurable outcomes.

FBUSHREDmillOutput SportsIsophitKinventAntepesHudlTitan GPSSTAND+Backfield App1SportsNVIDIA

Research Focus Areas

Multidisciplinary Approach to Athletic Excellence

Our research integrates multiple disciplines to provide a complete understanding of athletic performance and optimize training outcomes.

Strength & Conditioning

Periodized programs designed around athlete profiles and sport transferable workload demands.

Athlete ProfilesTransferable WorkloadsPeriodized Design

Speed & Agility

Sprint mechanics analysis and COD (change of direction) training to enhance on-field practice and game speed performance.

Sprint MechanicsCOD TrainingGame Speed

Motion & Biomechanics

Integrated movement assessment using capture and force metrics to identify physiological limitations of performance.

Movement AnalysisForce MetricsAthlete Efficiency

Performance Analytics

Data sports science workflows used to profile athletes from youth to pro and track measurable progression.

Longitudinal TrackingPerformance ProfilesAsymmetry Detection

Speed & Performance

Field-ready speed systems that align lab findings with sport execution and objective timing benchmarks.

GPS TrackingTiming SensorsOn-Field Transfer

Recovery & Monitoring

Monitoring protocols to support readiness, wellness, and sustainable development within training cycles.

Wellness TrackingReadinessMonitoring Protocols

Lab Equipment

State-of-the-Art Technology

Our laboratory is equipped with research-grade instrumentation to provide comprehensive performance assessment and monitoring capabilities.

Motion & Biomechanics

3D Motion Capture (Backfield App)

High-speed camera workflow for precise movement analysis

Kinvent (K-Delta) Force Plate

Measures force production, RSI, decel RFD, power output, and asymmetrical imbalances

Speed & Performance

Hudl/Titan GPS

Real-time player tracking and objective workload monitoring

Kinvent (K-Power) Timing Sensor

Timing-based speed diagnostics for sprint and agility

SHREDmill

Resisted sprint profiling for acceleration development and top-speed benchmarking.

Strength and Conditioning

Force Transducers

Real-time force output during resistance exercises

Jump Analysis

Vertical and horizontal power assessment

Output Sports VBT

Velocity-based training feedback to guide loading and intent.

Recovery

Kineon

Red Light Therapy System

Publications & Media

Research Outputs & Educational Resources

Sharing our findings and methodologies to advance the field of youth athletic development.

Video Presentation

Understanding Athletic Development Through Data

Discussion on the evaluation process, personalized training profiles, and consistent monitoring.

Case Study

The GRGL x TITAN GPS Integration

How wearable integration provides real-time player load monitoring and performance insights.

Latest Updates

Stay informed about our latest research findings and athlete success stories.

Subscribe to Updates

Passionate About Human Performance Research?

We are always looking for dedicated individuals who share our commitment to advancing athletic performance through scientific research.

Join Our Team

Partner With Us

Join Us In Redefining Human Athletic Potential

We welcome collaborations with athletes, parents, coaches, organizations, and agencies eager to push the boundaries of athletic performance.

Contact Information

  • coachajusa@getrightorgetleft.com
  • Contact for consultation
  • Book now
  • San Jose, CA