Physiology

Coach Ryan Kohler reviews season-to-season changes in heart rate/power distributions to illustrate improvements across the different energy systems.

Training inside is hot! Here are some facts and tips on beating the heat indoors.

Cardiovascular drift is an instability in heart rate and stroke volume over time. We show you how to determine it.

Dr. Stephen Cheung leads a discussion on indoor cycling, including heat management, adaptive differences between indoor and outdoor workouts, and what to do with those “nice” winter days when you can sneak outdoors.

Dr. Stephen Cheung discusses a study comparing steady-state versus fast-start intervals, then uses Xert software to model how a fast-start interval can be much more intense.

Dr. Stephen Seiler explores whether a Zwift race of about 60 minutes can be a decent substitute for a 60-minute FTP test.

In this workshop, Dr. Stephen Cheung uses Xert software to illustrate how a single workout can impact athletes differently depending on their phenotype.

Are you ready to suffer? Join us for a climbing time trial up the infamous Alpe du Zwift during which we’ll execute an FTP test.

Coaches Trevor Connor and Ryan Kohler analyze data from longer threshold efforts to support results garnered from the popular 20-minute power test.

Ryan and Trevor field questions on max heart rate, TSS, recovery in athletes who only train 8-10 hours per week, protein consumption during ultra-endurance events, and more.

Dr. Stephen Seiler shares the “holy trinity” of training feedback in this live presentation at a rowing conference.

These low-cadence tempo intervals allow us to work on technique, focus on force production at the pedals, and improve muscular endurance.

Dr. Stephen Seiler delves into over a century of research to explore why rowing has gotten faster so consistently.

Coaches Trevor Connor and Ryan Kohler analyze data from 20-minute power tests, offering important lessons on the proper execution of these intervals.