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Should you Bonk on Purpose?

admin September 22nd, 2007

I say why not? Go ahead and bonk on purpose, in a controlled environment, where someone is with you or knows where you are if you don’t show back up. Here’s an article by Matt Fitzgerald that discusses a physiologic adaptation that occurs after bonking, which may make you better prepared to handle endurance sports.

I’ll let you read the original article here, entitled Should you bonk on purpose

An exerpt:

“Believe it or not, one highly respected exercise scientist has suggested that it may be beneficial to bonk regularly in training. Her name is Bente Klarlund Pedersen, Ph.D., and she’s a researcher at the University of Copenhagen, Denmark.

Klarlund recently explained her rationale for “intentional bonking” in a lecture entitled “Signaling the Muscles to Adapt: Train Low, Compete High?” which was delivered at the 53rd Annual Meeting of the American College of Sports Medicine.

Benefits to under-fueling workouts

In this provocative lecture, Pedersen made the case that athletes — and especially endurance athletes — stand to gain greater fitness by performing some of their workouts in a glycogen-depleted state than by trying to perform all of their workouts in a glycogen-replete state.

In practical terms, she said, they should do some workouts within hours of having completed their last workout, such that there’s not enough time to replenish muscle glycogen stores between workouts, and they should also leave their sports drinks and gels at home for some workouts (that is, intentionally under-fuel their muscles during training).”

Read. Digest. Discuss.

Warnings on over-exercising

admin July 11th, 2007

http://www.theage.com.au/news/National/Expert-warns-on-overexercisi…

The info about temporary cardiac muscle enzyme elevation after endurance events is not new. However, I believe that the “conclusions” by the author, and as reported in this article in the last 2 paragraphs are irresponsible.

Certainly the hypothesis that temporary enzyme release represents muscle damage that could result in scarring is one that should be investigated. But to suggest in a paper, and have it picked up in the press and exposed ot the general public that endurance athletes are dying due to arrhythmias produced by scar tissue as a result of exercising over 3 hours a week is bad science and bad journalism.

Without electrophysiologic or autoposy data about the causes of death, these are just speculations and it’s far more likely they die from the much more common coronary artery disease.

THoughts & comments?