4 Comments
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David Saenger's avatar

I had the same concern. Isn’t loss of lean mass a problem?

Brady Holmer's avatar

I guess that depends how much lean mass one has to lose...

If lean mass goes down but there's a performance benefit, perhaps it's not a huge problem in the context of this study!

muness's avatar

> the nighttime carbohydrate restriction group lost 1.4 kg of body mass after the intervention, however, they also lost nearly a kilogram of lean body mass, meaning nearly all of their weight loss was lean body mass.

This strikes me as highly undesirable, and a reason not to "sleep low" regardless of VO2 benefits. Can you chime in on that point?

Brady Holmer's avatar

Lean mass loss is generally undesirable, yes, but I think given the VO2 improvements, better fat burning, and other performance benefits that might come with "sleep low", then lean mass loss might not be problematic in this context!