During each 1 - week period of this randomized crossover study, participants kept a regular sleep schedule. (newswise.com)
However, a double - blind, placebo - controlled crossover study in 2013 found that the effects of gluten were largely inconsistent and independent of dose. (mindbodygreen.com)
This was a randomized, controlled crossover study that examined how energy drinks affect heart function. (alivebynature.com)