Intermittent Fasting And Fast Twitch Muscle Fiber Atrophy – Part II

Intermittent Fasting And Fast Twitch Muscle Fiber Atrophy – Part II

Why would any individual concerned with fitness, performance, appearance, and health voluntarily choose to not eat?  Obviously because by not eating they expect to be able to positively impact one or several of those dimensions ( fitness, appearance, health etc. ) without doing overt harm to the others.  Recently, however, several studies have been published linking short term starvation with increased autophagy in fast twitch muscle fibers.  If this is true, then it is of significant concern because fast twitch muscle fibers are the ones that exhibit the highest capacity for hypertrophy, as well as the fibers recruited when maximal force output is called for.  These studies are especially worrisome because they suggest that metabolically speaking, fast twitch...

Intermittent Fasting, Autophagy, and mTOR – Part I

Intermittent Fasting, Autophagy, and mTOR – Part I

Rob, a reader from Ireland, pointed me to a worrying post regarding the potentially negative aspects of intermittent fasting and asked about my opinon of it.  Ok, I’m being generous here by throwing in the modifier potentially, because the post’s author definitely holds the viewpoint that fasting will kill you … I’m paraphrasing here and exaggerating a bit for effect, but not much since the actual quote from the posts’s conclusion is:   John Kiefer The research consistently shows that the only thing IF brings to the table for athletes is detriment. IF shuts off the very anabolic processes on which we rely for improving performance. IF manages to drive beneficial metabolic processes into destructive cellular chaos. In the...