Vo2Max and Heart Health – A Single Ride Following Dr. Paddy Barrett’s Formula

Vo2Max and Heart Health Correlation With DFAA-1 and other Metrics I recently stumbled across a Substack post by Dr. Paddy Barrett that explains how Vo2Max is impacted by low intensity exercise. While I had not known about Dr. Barrett previously, when I read his history and other posts, I became intrigued. I think he’s a […]
The Physiological Perspective of Four Separate 8-Minute Intervals

8-Minute Intervals At “Threshold”… In late November of 2024, I was able to perform an interval session on my indoor trainer and bike with my clients. The workout comprised of four separate 8-minute intervals. We used the VQ Velocity app, and I recorded each interval as a separate file while wearing my Vo2Master Gas Exchange […]
Affirming DFAA-1 Aerobic Base With Vo2Master and Moxy

A New Calculation Uses Heart Rate Variability to Better Tune DFAA-1 I’ve been a big fan of Dr. Bruce Rogers, since 2017. He is a trained MD, but publishes his work in credentialed journals. As a Masters’ level road cyclist, he knows how important heart health is. He is also fully aware of the cardiac […]
DFAA-1 On a BIG SCREEN!

DFAA-1 with ECG is Now Available On a BIG SCREEN! I’ve been working with two professionals now for several months on a project, and we are ready to start releasing it in ALPHA. DFAA-1 (Detrended Fluctuation Analysis – Short Term Variable #1) is a way to look at Heart Rate Variability and Cardio-Vascular Health. Dr. […]
More Fun With DFAA-1

“Using an old copy of RaceDay Apollo, a program invented by Dr. Philip Skiba, the software showed a .9799 (97.99%) probability factor that I would be able to hold 230 watts over 30 minutes. This product is no longer on the market, but copies of it are prized. With that number in mind and knowing that I did not have much intensity under my belt, I attempted to match or possibly break this value….”
Physiological Baselines for “Base”.

On Christmas Day, I performed a 60-minute workout on PerfPro Studio. I also recorded the data on Vo2master software. The goal was two-fold. I wanted to perform a ramp test, to try and determine Physiological baselines, specifically Heart Rate at DFAA-1 0.75 and 0.500. I also wanted to see if I could determine Ventilatory Threshold 1 and Ventilatory Threshold 2. Finally, I wanted to determine whether I could ‘See’ deflection points via SmO2.
With this information, I can work on adaptation to higher loads of power and traditional heart rate.
Base Ride Analysis Using Published Science

“In the first part of the video, you can see FatMaxxer being screencast from an Android to the PC window. The second screen is the Vo2master software, which is being screencast to the PC using LonelyScreen app. The rest of the information is being presented through PerfPro Studio. Post-ride analysis was done using PerfPro Studio, PerfPro Analyzer Beta, and Runalyze.”
Fat Burning, and DFAA-1, an Introduction

The metabolic fat-burning zone is not a new phenomenon. It can be found through a Vo2 apparatus that measures changes in Ventilatory Threshold. It can also be found through regular and invasive pricks with a Lactate Tester. The goal is to find the intensity where a cyclist’s Ventilatory Threshold changes; in other words, where their breathing frequency rises. A similar deflection can be found when using Lactate Testers; we are trying to find the intensity where the body begins to accumulate Lactate from a point where it can be processed back into….
More DFAA1 Files From Myself and my Clients

My Own Sleep Was Not Great, But Things On the Cardio Side Are Really Looking Good Well, once again, I didn’t sleep great last night. I woke up around 1:00am, and was up for about an hour. There is stress at the house with a relative, and that may have contributed. Last night, however, I […]
A GREAT RIDE WITH HIGH DFAA-1!

GENTLY RISING INTENSITY LEADS TO HIGHER POWER AT DFAA1! Here’s today’s ride, viewed in Runalyze, via DFA-a1. I didn’t have time to set up all of my instruments, but I did run 60 minutes with my Polar H10 chest strap and FatMaxxer software. Here’s the wattage profile: Now I WISH I could merge these files, […]