I'm actually quite surprised between the discrepancy between the OGTT results and the high carb breakfast. They basically produced opposite results in alertness.
Did they control for the form of the breakfast, liquid or solid? I can't see it as I write this comment but I think some of the breakfast variants had a milkshake component, and I'm wondering if solid vs liquid actually has a large effect here. I didn't read the full paper so if someone did, please comment.
Also, it was weird when they said for people not to consume caffeine only when doing the OGTT. Even if caffeine consumption was low overall during the study, getting people who otherwise drink caffeine to not, surely would affect morning alertness.
d_phase t1_ix3fzt3 wrote
Reply to Study demonstrates that how effectively an individual awakens in the hours following sleep is associated four independent factors: sleep quantity/quality the night before, physical activity the day prior, a breakfast rich in carbohydrate, and a lower blood glucose response following breakfast. by the_phet
I'm actually quite surprised between the discrepancy between the OGTT results and the high carb breakfast. They basically produced opposite results in alertness.
Did they control for the form of the breakfast, liquid or solid? I can't see it as I write this comment but I think some of the breakfast variants had a milkshake component, and I'm wondering if solid vs liquid actually has a large effect here. I didn't read the full paper so if someone did, please comment.
Also, it was weird when they said for people not to consume caffeine only when doing the OGTT. Even if caffeine consumption was low overall during the study, getting people who otherwise drink caffeine to not, surely would affect morning alertness.