title: Changes of mental stress biomarkers in ultramarathon.
abstract: We investigated the possible influence of an exhaustive physical exercise on mental stress biomarkers (serotonin, tryptophan, and beta-endorphin) along with dopamine, noradrenaline and free fatty acids in an ultramarathon race in which 45 km was run on the first day and 90 km on the second. We obtained serum samples at 6 different time points during and after the race from 18 Japanese male runners who completed the marathon. Overall changes of serum serotonin and tryptophan concentrations were statistically significant according to ANOVA for repeated measurements (p < 0.05). Serum serotonin levels elevated rapidly on the first day with the post hoc Tukey's test. Tryptophan concentrations inversely decreased during the race, possibly because of utilization for synthesis of serotonin. Levels of beta-endorphin appeared to increase on the first and second days, but were not statistically significant. In conclusion, serum serotonin, tryptophan and beta-endorphin appeared to be used for mental stress markers in physical exercise.
authors.affiliation: Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Agawa
authors.forename: N
authors.initials: N
authors.lastname: Yamada
authors.forename: Y
authors.initials: Y
authors.lastname: Enomoto
authors.forename: H
authors.initials: H
authors.lastname: Suzuki
authors.forename: A
authors.initials: A
authors.lastname: Hosono
authors.forename: K
authors.initials: K
authors.lastname: Arakawa
authors.forename: R
authors.initials: R
authors.lastname: Ghadimi
authors.forename: M
authors.initials: M
authors.lastname: Miyata
authors.forename: K
authors.initials: K
authors.lastname: Maeda
authors.forename: K
authors.initials: K
authors.lastname: Shibata
authors.forename: M
authors.initials: M
authors.lastname: Tokudome
authors.forename: C
authors.initials: C
authors.lastname: Goto
authors.forename: Y
authors.initials: Y
authors.lastname: Tokudome
authors.forename: H
authors.initials: H
authors.lastname: Hoshino
authors.forename: N
authors.initials: N
authors.lastname: Imaeda
authors.forename: M
authors.initials: M
authors.lastname: Marumoto
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Kobayashi
authors.forename: S
authors.initials: S
authors.lastname: Tokudome
mesh_terms: D000704:Analysis of Variance; D000886:Anthropometry; D015415:Biomarkers / Q000097:blood*; D017079:Exercise Tolerance / Q000502:physiology*; D006801:Humans; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D011581:Psychological Tests; D012420:Running / Q000502:physiology*; D012701:Serotonin / Q000097:blood; D013315:Stress, Psychological / Q000097:blood*; D014364:Tryptophan / Q000097:blood; D001615:beta-Endorphin / Q000097:blood
chemical_list: D015415:Biomarkers; D012701:Serotonin; D001615:beta-Endorphin; D014364:Tryptophan