About O2Max
Pushing the limits of human performance
O2Max combines 30+ years of athletic experience with clinical-grade metabolic testing to help athletes and individuals unlock their full potential through precision respiratory training.
Our Mission
We believe everyone deserves access to the same precision health optimization tools used by Olympic athletes. Our mission is to democratize metabolic analysis and respiratory training, making clinical-grade insights accessible to anyone committed to improving their health and performance.
Through advanced breath analysis technology and personalized training programs, we help clients understand exactly how their body uses oxygen—and how to optimize it for better endurance, faster recovery, and longer healthspan.
What drives us
Precision
Every recommendation is backed by clinical-grade data and personalized to your unique physiology.
Compassion
We treat every client as an individual, understanding that each journey is unique.
Excellence
We pursue the highest standards in metabolic testing and respiratory training.
Community
Building a network of athletes and individuals committed to optimal health.
Founder & Head Trainer
Meet Your Trainer
Gilles Essiembre
Gilles has been involved in competitive sports his entire life, from hockey and badminton to bodybuilding and ultra-endurance events. But his true passion isn't just personal achievement—it's helping others unlock their potential through science-backed training.
Growing up in Campbellton, NB, Gilles discovered the gym in high school hockey. That introduction sparked a journey that led to winning the 2001 NB Bodybuilding Championships, competing at nationals, and eventually completing some of Canada's most demanding endurance challenges.
Today, as a certified Metabolic and Respiratory Trainer, Gilles specializes in analyzing the relationship between oxygen, CO2, and metabolism. His clients—from professional athletes to respiratory patients—receive custom programs adjusted to their unique physiological needs.
His philosophy is simple: age is just a number, and anything is possible with the right goals and coaching.
Certifications
The journey so far
2001
NB Bodybuilding Champion
Won the New Brunswick Bodybuilding Championships and placed 2nd at Canadian Bodybuilding Federation.
2002
National World Qualifier
Won the Bantamweight Category at the Canadian National World Qualifier.
2015
Personal Training Certification
Received certification and earned awards for top hours and Top 3 Team Trainer at Goodlife.
2017
Ultra Spartan Beast
Top 20 finish at Ultra Spartan Beast in Stoneham, QC. Qualified for World Championship in Iceland.
2021
Fundy Footpath
Completed one of Canada's hardest trails—63km with 9,000 feet elevation in 15 hours.
2024
O2Max Expansion
Expanded metabolic testing services across Canada with clinical-grade PNOE analysis system.
Clinical-grade technology
O2Max uses the PNOE metabolic analyzer—independently validated as the most accurate portable metabolic testing system available. This same technology is used by professional sports teams, Olympic training centers, and leading research institutions.
- ✓AI-powered breath analysis measuring 12 biomarkers
- ✓Clinical-grade accuracy validated by peer-reviewed research
- ✓Real-time feedback during VO2 Max testing
- ✓Comprehensive reports with actionable recommendations
PNOE
Metabolic Analyzer
Clinical-Grade Accuracy
Ready to start your journey?
Book a free consultation and discover how metabolic analysis can transform your performance.
Book Free Consultation