title: Beta-endorphins and mood states during resistance exercise.
abstract: Research examining the relationship between beta-endorphin immunoreactivity and affect has resulted in equivocal findings. To examine this relationship further, 10 male and 10 female college-age students participated in a controlled free-weight exercise session. Blood plasma samples were procured both prior to and following the exercise bout and beta-endorphin levels were determined by immunoassay. Analysis indicated that plasma beta-endorphin levels following exercise were significantly decreased from pre-exercise levels. Pearson correlations showed no significant relationship between pre- or postexercise plasma beta-endorphins and either total mood disturbance or Profile of Mood States subscores. The data support previous failure of resistance exercise to produce an increase in beta-endorphin immunoreactivity as well as the lack of a significant relationship between affect and the beta-endorphin response to exercise.
authors: Health and Sport Science Department, University of Richmond, VA 23173.
authors: R W
authors: RW
authors: McGowan
authors: E F
authors: EF
authors: Pierce
authors: N
authors: N
authors: Eastman
authors: H L
authors: HL
authors: Tripathi
authors: T
authors: T
authors: Dewey
authors: K
authors: K
authors: Olson
mesh_terms: D000328:Adult; D000339:Affect; D015444:Exercise; D005260:Female; D006801:Humans; D007118:Immunoassay; D008297:Male; D001615:beta-Endorphin / Q000032:analysis / Q000097:blood / Q000276:immunology*
chemical_list: D001615:beta-Endorphin