3.2. Orexigenic/Anorexigenic Balance
early-night sleep loss, sleep loss’ condition, late-night sleep loss
Plasma total ghrelin and leptin concentrations were not different between conditions when participants arrived at the research unit (both Sleep onset (from 22:00 h to 24:00 h for ‘late-night sleep loss’ and ‘regular sleep’; from 02:00 h to 04:00 h for ‘early-night sleep loss’) induced a distinct and rapid increase in leptin concentrations (Sleep onset was associated with an increase in ghrelin concentrations in the ‘late-night sleep loss’ and ‘regular sleep’ conditions, but not in the ‘early-night sleep loss’ condition (