Bay Area Labs
- Jan 11, 2007
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Very long article I cam across but found fascinating, written by Richard Gibbens Here
The most enduring model of endurance physiology is the Cardiovascular/Anaerobic model. Initially suggested by British physiologists A.V. Hill and associates in the mid-1920s, this model has been promoted by scientists, coaches, and athletes world-wide for nearly 80 years. This model basically posits that a lack of oxygen to working muscles is what ultimately limits exercise performance. Most adherents to this model use the terms VO2max, lactate threshold, and running economy when discussing training or physiology; terms which are used to describe particular aspects of this model. Though this model continues to be accepted today by most runners and coaches since the 1970s an increasingly large body of research has challenged the validity of the cardiovascular/anaerobic model. However, despite the increasing volume of evidence against it, the model has persisted as the primary model of endurance physiology.
I believe the main reason the cardiovascular/anaerobic model has persisted in the face of the large body of evidence to the contrary is that no other comprehensive model of endurance physiology has been proposed. So, while the deficiencies of the cardiovascular/anaerobic model are well known, the absence of another model to replace it has allowed continued support for the cardiovascular/anaerobic model.
Recently one of the primary opponents to the cardiovascular/anaerobic model, noted researcher and author Dr. Tim Noakes, proposed a new, revolutionary, comprehensive model of endurance performance that he has termed the Hill/Noakes Central Governor Model. The existence of a physiological governor was first suggested by A.V. Hill, the same physiologist credited with the cardiovascular/anaerobic model. However, Hill