Beta-endorphins and mood states during resistance exercise.
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.
McGowan
R W
RW
Health and Sport Science Department, University of Richmond, VA 23173.
Pierce
E F
EF
Eastman
N
N
Tripathi
H L
HL
Dewey
T
T
Olson
K
K
D000328:Adult; D000339:Affect; D015444:Exercise; D005260:Female; D006801:Humans; D007118:Immunoassay; D008297:Male; D001615:beta-Endorphin / Q000032:analysis / Q000097:blood / Q000276:immunology*
D001615:beta-Endorphin