title: Brain activation, affect, and aerobic exercise: an examination of both state-independent and state-dependent relationships.
abstract: Resting electroencephalograph (EEG) asymmetry is a biological marker of the propensity to respond affectively to, and a measure of change in affect associated with, acute aerobic exercise. This study examined the EEG-affect-exercise relationship. Twenty participants performed each of three randomly assigned 30-min conditions: (a) a nonexercise control, (b) a cycling exercise at 55% VO2max, and (c) a cycling exercise at 70% VO2max. EEG and affect were assessed pre- and 0, 5, 10, 20, and 30 min postcondition. No significant results were seen in the control or 55% conditions. In the 70% exercise condition, greater relative left frontal activation preexercise predicted increased positive affect and reduced state anxiety postexercise. Participants (n = 7) with extreme relative left frontal activation postexercise reported concomitant decreases in anxiety, whereas participants (n = 7) with extreme relative right frontal activation postexercise reported increases in anxiety. These findings (a) replicate prior work, (b) suggest a dose-response intensity effect, and (c) support the idea that exercise is an emotion-eliciting event. Affective responses seem to be mediated in part by differential resting levels of activation in the anterior brain regions. Ongoing anterior brain activation reflected concurrent postexercise affect.
authors.affiliation: Department of Kinesiology, University of Illinois, Urbana 61801, USA. petruzze@uiuc.edu
authors.forename: S J
authors.initials: SJ
authors.lastname: Petruzzello
authors.forename: A K
authors.initials: AK
authors.lastname: Tate
mesh_terms: D000328:Adult; D000339:Affect / Q000502:physiology*; D001007:Anxiety / Q000503:physiopathology; D001143:Arousal / Q000502:physiology; D001341:Autonomic Nervous System / Q000502:physiology; D001921:Brain / Q000502:physiology*; D004305:Dose-Response Relationship, Drug; D004569:Electroencephalography; D015444:Exercise / Q000502:physiology*; D005260:Female; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008297:Male