The Anaerobic Threshold Hypothesis

Anaerobic threshold was defined as the level of work or O2 consumption just below that at which metabolic acidosis and the associated changes in gas exchange occur. So this to me sounds like FTP because FTP is where you know lactate starts accumulating but we can actually measure power output at these levels. The appearance of lactate happens much sooner than you actually hit your VO2 max. We're going to get into more detail about how it works when we look at the physiology and biochemistry of FTP.