title: Effect of 48 h Fasting on Autonomic Function, Brain Activity, Cognition, and Mood in Amateur Weight Lifters.
abstract: Objectives.The acute fasting-induced cardiovascular autonomic response and its effect on cognition and mood remain debatable. Thus, the main purpose of this study was to estimate the effect of a 48 h, zero-calorie diet on autonomic function, brain activity, cognition, and mood in amateur weight lifters.Methods.Nine participants completed a 48 h, zero-calorie diet program. Cardiovascular autonomic function, resting frontal brain activity, cognitive performance, and mood were evaluated before and after fasting.Results.Fasting decreased (p< 0.05) weight, heart rate, and systolic blood pressure, whereas no changes were evident regarding any of the measured heart rate variability indices. Fasting decreased (p< 0.05) the concentration of oxygenated hemoglobin and improved (p< 0.05) mental flexibility and shifting set, whereas no changes were observed in working memory, visuospatial discrimination, and spatial orientation ability. Fasting also increased (p< 0.05) anger, whereas other mood states were not affected by it.Conclusions.48 h fasting resulted in higher parasympathetic activity and decreased resting frontal brain activity, increased anger, and improved prefrontal-cortex-related cognitive functions, such as mental flexibility and set shifting, in amateur weight lifters. In contrast, hippocampus-related cognitive functions were not affected by it.
authors.affiliation: Institute of Sports Science and Innovations, Lithuanian Sports University, Sporto Str. 6, Kaunas, Lithuania.
authors.forename: Rima
authors.identifier: 0000-0001-6822-4519
authors.initials: R
authors.lastname: Solianik
authors.affiliation: Institute of Sports Science and Innovations, Lithuanian Sports University, Sporto Str. 6, Kaunas, Lithuania.
authors.forename: Artūras
authors.identifier: 0000-0002-4654-8210
authors.initials: A
authors.lastname: Sujeta
authors.affiliation: Institute of Sports Science and Innovations, Lithuanian Sports University, Sporto Str. 6, Kaunas, Lithuania.
authors.forename: Asta
authors.identifier: 0000-0002-8217-6645
authors.initials: A
authors.lastname: Terentjevienė
authors.affiliation: Institute of Sports Science and Innovations, Lithuanian Sports University, Sporto Str. 6, Kaunas, Lithuania.
authors.forename: Albertas
authors.initials: A
authors.lastname: Skurvydas
mesh_terms: D000328:Adult; D000339:Affect / Q000502:physiology*; D001341:Autonomic Nervous System / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D005215:Fasting; D006801:Humans; D008297:Male; D014891:Weight Lifting / Q000502:physiology*