Extreme Endurance Coaching Replace – BionicOldGuy

In his “science of sweat” column, Alex Hutchinson reported on some current research that give an replace on whether or not there are any well being issues related to extreme endurance coaching. I’ve already spoken about it (here, hereand here) I am a bit as a result of I actually like to coach in endurance. The primary examine is a recent one from Solar-Yat-Sen College in China [1]. This confirms that though individuals who do a excessive quantity of endurance train are inclined to have larger calcium scores of their coronary arteries (a sign of arterial plaque), this can be a benign situation as a result of the plate tends to be steady. This newest examine exhibits that in long-term follow-up, high-volume athletes wouldn’t have an elevated danger of opposed cardiac occasions.

A second study [2] disputes the “J-curve” that has been beforehand reported for all-cause mortality versus quantity of train. It’s well-known that train reduces the danger of loss of life, however some earlier research have proven that the danger of loss of life goes up with excessive quantities of train. That is controversial as a result of some research have discovered this impact, however others haven’t. The brand new examine highlights a flaw within the methodology of earlier research that detected a J-curve. Somewhat than monitoring the precise ongoing train habits of these tracked, the earlier outcomes estimated the quantity of bodily exercise solely on the premise of a questionnaire administered at first of the examine. Within the current examine, the quantity of train was constantly monitored for over 30 years in a big pattern (over 100,000) of individuals. The “J-curve” was not discovered: train reduces the danger of all-cause mortality, together with excessive train volumes.

I at all times wish to hedge my bets on this. I do a variety of train, however a big proportion of it’s comparatively low depth, extra like brisk strolling or the like. I train at larger intensities, however at a decrease quantity. As I defined earlier (here and here) it’s a good mixture of workouts for an efficient exercise, well being advantages and leisure.


  1. Gao J, Hao Q, Lu Let al“Associations of long-term bodily exercise trajectories with coronary artery calcium development and heart problems occasions: outcomes from the CARDIA examine”, British Journal of Sports activities Medication 2022.
  2. Hoong Lee, D, et al, “Lengthy-term leisure-time bodily exercise depth and all-cause and cause-specific mortality: a potential cohort of American adults”. Site visitors. 2022.

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