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Leucine Inhibits Nitric Oxide & Beneficial Effects of Cardio Training on Glucose Management. Plus: No Increase in Protein Synthesis W/ Protein After Eccentric Workouts?

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Pre-, Post and Intra-workout supplements are a multi-million dollar business. But are the products at least half as effective as the shiny advertisements claim? Let me guess, the actual reason you want to read this article is the shocking claim that everybody's darling, the "pro-anabolic amino acid" leucine may, in addition to having beneficial effects on the phosphorylation of mTOR and the subsequent increase in skeletal muscle protein synthesis, also have negative effects. Right? Ok, I will add a link that takes you right to my elaborations on two recent studies from the São Paulo University and the China Agricultural University and allows you to skip past the information about another recent study. A study from the Department of Public Health at the Aarhus University and a study that raises the question, whether its results are indicate that eccentric training is potent enough to maximize the protein anabolic response to an extend that the additional provisio...

Fasted Cardio & Beyond - Optimal 24h Fatty Oxidation: How It Works, Why It Works & Why It Still May Not Be Worth It

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Photo of a typical disciple of the cult of the "fat burning zone". Day 3 of the  SuppVersity Exercise Science Week and for some of you maybe about time to have breakfast... hold on, breakfast? But shouldn't you work out before breakfast? I mean this whole cardio in the morning business you have taken up lately is all about doing it before , not after breakfast isn't it? You grab your WIFI-connected iPhone tune in to the Super Human Radio morning cardio mash-up and hop onto your cycle ergometer, treadmill, rowing machine, elliptical, spinning bike, stepper, or whatever else you may be using  - no breakfast no intra-workout supplement - at least no carbs, right? Ah, and of course you are going to work out at the highest intensity possible, to burn more fat later on, after all, you are no disciple of the cult of the "fat burning zone", right? Right! And still you have your doubts, hah? Now, I can't tell you whether the above has anything to do with...

Less Than 15mg of DHEA Exert Identical Beneficial Effects on Insulin Sensitivity as 1h of Cardio 5x Per Week. Both Effects Mediated Via Increases in Intra-Muscular DHT

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Image 1: It has long been established that diabetics have particularly low DHEA levels ( Loviselli. 1994 ), but what's the chicken and what's the egg here? It is quite funny, sometimes you don't hear about certain supplements, (pro-)hormones, exercise-modalities etc. in years and then, all of a sudden, there are two studies on the respective topic in one week; and moreover, two pretty interesting ones! Last Friday, exactly 7 days ago, you've read here at the SuppVersity about the muscle-protective effects of low-dose dehydroepiandrosterone (DHEA) supplementation during a 5-day intense multiple-type exercise protocol (cf. " DHEA Blunts Muscle Damage During 5 Days of Combined Endurance, Strength and HIIT Training in Young Men "). Today, I have another interesting set of data for you - data which could not just shed some light onto the underlying mechanisms of the said protective effects against skeletal muscle damage, but also on DHEA's beneficial effe...

Study Identifies Caffeic Acid Induced AMPK-α2 Activity Behind the Fat Burning, Insulin-Sensitizing & Life-Extending Effects of Coffee. Plus: Why Creatine & Coffee Don't Mix!

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Image 1: I've got news for you: Real coffee does not come in brown sterophome cups ;-) Ever since Starbucks came out with the "McDonald's version" of what used to be the drink of the popes and kings, coffee has gotten sort of a bad reputation. It is supposed to "burn out your adrenal glands" (I bet most people who support this hypothesis don't even know where the adrenal glands are situated), derive you of  vital nutrients and water, reduce insulin sensitivity, give you palpitations and high blood pressure, ... I guess, you know the whole litany. If we take a closer look at the contemporary scientific consensus, many of these arguments against your 2-3 cups of coffee per day lack any scientifically verified basis. Others apply only if you (ab-)use the uber-potent high-caffeine, high sugar, low polyphenol Starbucks brew as "rocket fuel" on your mission not to mars, but to your first (or next?) heart attack. Live longer, live leaner and l...
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