VO2 Master meets Garmin Dynamics: Quantifying Metabolic Economy and Chassis Demands on Peavine Dirt
When analyzing Garmin Cycling Dynamics MTB telemetry across a full season, true progress isn’t just about riding faster—it’s about understanding how I rode faster. By comparing my lab-calibrated VO2 Master telemetry, dual-sided power metrics, and pedaling dynamics from my June 20th, 2026 baseline effort against my August 10th PR on the Halo Loop, the underlying […]
Tire Selection vs. Terrain: How Vittoria Rubber Saved 7.5% Effort on the Halo Loop
Tire Selection vs. Terrain: How Vittoria Rubber Saved 7.5% Effort on the Halo Loop By Richard Wharton | August 2, 2026 Proper tire selection on technical mountain bike trails plays a far greater role in overall efficiency than raw horsepower alone. If you ride strictly by feel, hot, dry summer dirt on Peavine Mountain’s benchmark […]
When “Easy” Power Isn’t Easy: A VO2 Master Data Deep Dive
Analyzing VO2 Master data reveals a stark reality check from my ride this Friday morning. I expected a straightforward, low-intensity recovery base day. Instead, my body gave me a loud warning. Even though I intentionally kept my external intensity low, the internal cost of the ride was exceptionally high. This ride is a textbook example […]
Stop Ignoring Garmin Performance Condition: How to Use It as a Real-Time Health Governor
How I Used Performance Condition to Stay Healthy on Today’s Base Ride This morning’s ride wasn’t about speed or hero watts. It was about physiology, recovery, and learning how to leverage Garmin Performance Condition to protect my autonomic system. For the first time, I used this real-time metric as the primary governor for the entire […]
Real-Time Decompensation: Decoupling and the Anatomy of My Failed Workout
Every endurance athlete knows the feeling of hitting a wall, but few can see it coming down the track with mathematical precision, which is why monitoring your Garmin Performance Condition is so vital during hard blocks. Yesterday, I set out to complete a critical high-intensity maintenance block: 7×3-minute VO2max intervals targeting north of 270 watts. […]
The Garmin Daily Double Dip: A Stamina and Potential Deep Dive
The Garmin Daily Double Dip: A Stamina and Potential Deep Dive Coach Wharton – May 7, 2026 Understanding Garmin Stamina metrics like Actual Stamina and Stamina Potential has fundamentally changed the way we analyze real-time capacity and athletic recovery. While Potential represents your total “fuel tank” for the entire ride, Actual Stamina reflects what you […]
Garmin Guru Deep Dive: Decoding the Internal Response to 4-Minute VO2max Intervals
Garmin Guru Deep Dive: Decoding the Internal Response to 4-Minute VO2max Intervals Today’s session of 4-minute VO2max intervals was a masterclass in why I lead with physiology, not physics. As the Garmin Guru at Online Bike Coach, I’m constantly looking for the “truth” behind the numbers. Today, that truth was found in gas exchange and […]
Altitude, Heat, and the Power Curve: Practical Physiology for Endurance Athletes
Elite performance is built on a careful balance between stress and recovery, biology and behavior. This article translates practical lessons from applied sports science into usable guidance for endurance athletes and coaches. It covers how simulated altitude works, why erythropoiesis is not as simple as “more red blood cells = better,” how heat affects different […]
2023: New Home, New Goals, New Services, New Discussions
New Home: Sacramento, California, USA! Hey everyone, I can’t believe that I’ve landed and set up shop in our new home here in Sacramento, California. Honestly, I haven’t been a Californian since 1974, so this is definitely going to be a new experience. Online Bike Coach has been a stalwart pillar of coaching and information […]
75 XSS For 75 Days – Six Weeks In
75 XSS As a Minimum Volume for a Ride Is Showing Some Results Achieving 75 XSS (Xert Strain Score) points for every ride is leading to some interesting results. While I thought I was being consistent, it’s been a challenge. Most weeks have gone in a “4 rides”, one day off, 3 rides, one day […]