Knowledge Base

Physiology

Humans aren’t machines—we’re much more complicated. Exercise physiology involves changes in the body from exercise and rest.

From anaerobic threshold to environmental acclimatization, from FTP to PGC-1 alpha, we explore the science of human performance.

Subtopic Filter

Physiology > Functional Threshold Power

A cyclist dressed in black rides out of the saddle against a black background

The True Definition of Threshold

Your lactate threshold may not be what you think it is. Coach Trevor Connor explores the true definition of this physiological turn point.

Limited content is available to non-members. Please login or join.

FTP Testing

Structured Workout: 20-Minute FTP Test

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.

Limited content is available to non-members. Please login or join.

Colby Pearce Cycling in Alignment Podcast

Fundamentals of Cycling

Colby Pearce outlines some key abilities that make great cyclists in this broad overview of the sport.

Limited content is available to non-members. Please login or join.

Fast Talk Podcast Q&A

Mission Impossible: Determining Your True Threshold

How accurate are threshold numbers? And why is it so difficult to find accurate threshold numbers? We discuss several common ways to find your threshold and their pros and cons.

Limited content is available to non-members. Please login or join.

Fast Talk Podcast Q&A

What is VLamax? With Sebastian Weber

This episode we take a close look at Sebastian Weber’s concept of VLamax to improve your training.

Limited content is available to non-members. Please login or join.