Mood alteration from treadmill running and its relationship to beta-endorphin, corticotropin, and growth hormone.
We examined the effects of running on mood alteration in males and females and its relationship to changes in beta-endorphin (B-EN), corticotropin (ACTH), and growth hormone (GH). Thirteen males and ten females ran on a treadmill for 30 min at 80% of previously determined maximum heart rate. Five plasma samples were obtained through an indwelling catheter before exercise (-30 and 0 min), during exercise (15 min), at exercise completion (+30 min), and after 30 min of recovery (R30); the Profile of Mood States (POMS) inventory was administered at -30 and +30. Composite mood improved after the run for both males and females withput concomitant rise in B-EN. For males but not females, an increase in mood was associated with lower B-EN (r = 0.65) and ACTH (r = 0.65) and this relationship was also significant prior to exercise for B-EN (r = 0.74) and ACTH (r = 0.81). It appears that an increase in peripheral beta-endorphin concentration may not be a major contributor to improved mood in response to exercise, but is an indicator of negative mood in males.
Kraemer
R R
RR
Killgore Research Center, West Texas State University, Canyon 79016.
Dzewaltowski
D A
DA
Blair
M S
MS
Rinehardt
K F
KF
Castracane
V D
VD
D000324:Adrenocorticotropic Hormone / Q000097:blood*; D000328:Adult; D000339:Affect / Q000502:physiology*; D005260:Female; D013006:Growth Hormone / Q000097:blood*; D006801:Humans; D008297:Male; D012420:Running; D012737:Sex Factors; D001615:beta-Endorphin / Q000097:blood*
D001615:beta-Endorphin; D000324:Adrenocorticotropic Hormone; D013006:Growth Hormone