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'Training Low[Carb]' Requires 0.12g/kg Extra-Protein | Fitbit Fitness Data Decently Reliable | Plus: Salt vs. Passin' Out

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Mixed news about nutrition, exercise, and supplementation. In the absence of game-changing nutrition, exercise, and supplementation science I decided to post one of the recently rare installments of the good old " on short notice " column at the SuppVersity . This installment of the " short news " features two plus one papers from the latest issue of "Medicine & Science in Sports & Exercise"  and their, as of yet, unpublished "ahead of print" articles. While we'll start with a short discussion of the latest investigation into the accuracy (or rather usefulness) of your (old) Fitbit Charge 2.0 , I suspect that most of you will be more interested in the "training low [carb/glycogen]" study which is the first to quantify the (to be expected) increase in protein/amino acid requirements in those who avoid carbs to maximize the mitochondrial response to exercise (see "Maximizing Training-Induced Cellular Adaptation: T...
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How Accurate Are Activity Trackers? EE Data From Omron, Fitbit, Jawbone & Other Devices Reveals 10% Error & More

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Even though the study doesn't provide a straight-forward answer to the question "Which is the best activity tracker?", it is still revealing. I hope you don't rely on the data from your activity tracker as a basis to decide how much you can, should or may eat on a daily basis. Why? Well, the first and most important result of a recent study from the  Human Performance Laboratory at the Ball State University  is that "consumer-based PA [physical activity] monitors should be used cautiously for estimating EE [energy expenditure]" (Nelson. 2016) - and this goes for the data from all the devices that were tested by Nelson et al.: The BodyMedia FIT and the NikeFuel  armband, the DirectLife monitor, the Omron HJ-720IT , the Fitbit One , the Fitbit Zip , the Fitbit Flex ,   the Jawbone UP24 , the Basis B1 Band Monitor  and the ActiGraph . Don't tell me you use an activity tracker, but don't periodize your training! 30% More on the Big Three: Squa...
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