title: Sensitivity to change in cognitive performance and mood measures of energy and fatigue in response to morning caffeine alone or in combination with carbohydrate.
abstract: This double-blind, placebo-controlled, within-subjects (N = 17) experiment compared the sensitivity to change of the cognitive performance and mood measures of mental energy following consumption of either a moderate dose of caffeine (200 mg), a small amount of carbohydrate (50 g white bread), or both. Caffeine improved mood and performance. The sensitivity to change of the mood and cognitive measures did not differ in response to the three treatments (all p values > .05). The mood and cognitive measures of mental energy used here have similar sensitivity to detecting change in response to caffeine and carbohydrate.
authors.affiliation: Department of Kinesiology, University of Georgia, Athens, Georgia, USA.
authors.forename: Victor
authors.initials: V
authors.lastname: Maridakis
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: O'Connor
authors.forename: Phillip D
authors.initials: PD
authors.lastname: Tomporowski
mesh_terms: D000339:Affect / Q000187:drug effects*; D001288:Attention / Q000187:drug effects; D002110:Caffeine / Q000494:pharmacology*; D000697:Central Nervous System Stimulants / Q000494:pharmacology*; D003071:Cognition / Q000187:drug effects*; D003627:Data Interpretation, Statistical; D004040:Dietary Carbohydrates / Q000494:pharmacology*; D004734:Energy Metabolism / Q000187:drug effects*; D005221:Fatigue / Q000378:metabolism*; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010775:Photic Stimulation; D011597:Psychomotor Performance / Q000187:drug effects*; D011930:Reaction Time / Q000187:drug effects; D011795:Surveys and Questionnaires; D014796:Visual Perception / Q000187:drug effects; D055815:Young Adult
chemical_list: D000697:Central Nervous System Stimulants; D004040:Dietary Carbohydrates; D002110:Caffeine